CN104784967A - On-line adjustable final-stage backflow centrifugal extracting machine and adjustment method thereof - Google Patents
On-line adjustable final-stage backflow centrifugal extracting machine and adjustment method thereof Download PDFInfo
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- CN104784967A CN104784967A CN201510133312.4A CN201510133312A CN104784967A CN 104784967 A CN104784967 A CN 104784967A CN 201510133312 A CN201510133312 A CN 201510133312A CN 104784967 A CN104784967 A CN 104784967A
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Abstract
The invention belongs to the field of solvent extraction, and particularly relates to an on-line adjustable final-stage backflow centrifugal extracting machine and an adjustment method of the machine. The centrifugal extracting machine comprises an upper housing and a lower housing, wherein the upper housing is internally provided with a heavy phase collecting cavity and a light phase collecting cavity; the heavy phase collecting cavity is communicated with a heavy phase liquid outlet pipe; the light phase collecting cavity is communicated with a light phase liquid outlet pipe; the lower housing is communicated with a heavy phase liquid inlet pipe and a light phase liquid inlet pipe; a heavy phase final-stage backflow device is arranged between the heavy phase collecting cavity and/or the heavy phase liquid outlet pipe and the heavy phase liquid inlet pipe; or a light phase final-stage backflow device is arranged between the light phase collecting cavity and/or the light phase liquid outlet pipe liquid outlet pipe the light phase liquid inlet pipe. The centrifugal extracting machine is applicable to a large flow ratio working condition, increases phase system concentration, and is stable in extraction process, good in product quality, high in extraction efficiency and simple in structure, and an application scope of the centrifugal extracting machine is greatly enlarged. At the same time, the adjustment method is simple, effective and reliable.
Description
Technical field
The invention belongs to solvent extraction field, be specifically related to a kind of online adjustable reflow type centrifugal extractor at the corresponding levels and control method thereof.
Background technology
The operation of extracting wherein certain component with solvent from liquid mixture is called liquid/liquid extraction.
Centrifugal extractor is one liquid-liquid extraction (solvent extraction) equipment fast and efficiently, it is the extraction and fractionation utilizing centrifugal force to realize liquid-liquid diphase, can realize the several functions such as liquid-liquid diphase mixing, mass transfer, reaction, extraction, washing, separation.The multiple fields such as hydrometallurgy, wastewater treatment, biology, pharmacy, petrochemical industry, chemical industry, spices, dyestuff, atomic energy can be widely used in.
As shown in Figure 1, conventional centrifugal extractor comprises upper shell 4 and lower house 5, is provided with rotary drum 3, and is provided with annular gap 51 between lower house 5 and rotary drum 3 in lower house 5, and main shaft 2 drives rotary drum 3 to rotate through upper shell 4 and lower house 5 from top to bottom; The both sides of lower house 5 respectively with heavy phase feed tube 8 and light phase feed tube 7 UNICOM, the upside of rotary drum 3 is provided with heavy phase fluid collection chamber 82 and light phase fluid collection chamber 72, be respectively arranged with the heavy phase collecting chamber 84 be communicated with heavy phase fluid collection chamber 82 and the light phase collecting chamber 74 be communicated with light phase fluid collection chamber 72 in upper shell 4, the both sides of described upper shell 4 are respectively arranged with the heavy phase drain pipe 85 be communicated with heavy phase collecting chamber 84 and the light phase drain pipe 75 be communicated with light phase collecting chamber 74.Light during work, heavy two-phase from its separately feed tube enter extracter inside, flowed downward by the annular gap 51 between lower house 5 and rotary drum 3, rotary drum 3 is entered inner by the entrance bottom rotary drum 3, the rotary drum 3 of rotation is driven to produce centrifugal force by main shaft 2, by two-phase liquid different for density separately, the object of separation is reached.Two-phase liquid separately enters respective collecting chamber by different runners, is flowed out by respective drain pipe.
Centrifugal extractor is generally applicable to the operating mode of light, heavy two-phase flow ratio within 1:20, at this stream than in scope, centrifugal extractor can be regulated, to obtain the good product of quality and higher extraction efficiency by modes such as adjustment rotating speed, heavy phase weir plate or increase extraction progression.At present, in the field such as hydrometallurgy, Extraction of rare eart and purifying, nuclear fuel extraction, chemical industry, because technique needs, often occur flow than extraction process greatly, its gently, weigh two-phase flow ratio generally at more than 1:30, even more than 1:50.Flowing than in situation greatly, certain phase flow rate in centrifugal extractor is very little, and concentration is low, and balance each other very unstable and as easy as rolling off a log fluctuation, and phase-contact surface is little, and the product design extracted is very low, second-rate, and extraction efficiency is low.Especially in hydrometallurgy, Extraction of rare eart field, extraction progression is generally more than hundreds of, even thousands of level, once occur balancing each other destruction or production process not steady, the extraction process of hundreds of or thousands of grades will be made all heavily to come, product even wrecks, it is very long again to set up the cycle of balancing each other, and economic loss is very huge.
So, technology field is compared at large stream, centrifugal extractor generally just can not get application, user have to adopt inefficiency, labour intensity is high, utilize gravity to realize the extraction tank of static layering, extraction box or extraction tower, seriously hinders applying of centrifugal extractor.
Summary of the invention
For above-mentioned weak point of the prior art, one of the technical problem to be solved in the present invention be to provide a kind of can at the online adjustable at the corresponding levels reflow type centrifugal extractor of large stream than stable operation under operating mode.It is concentration mutually that centrifugal extractor in the present invention is not only applicable to flow than operating mode, and improve greatly, and extraction process is steady, good product quality, and extraction efficiency is high, and structure is simple, greatly expands the range of application of centrifugal extractor.
To achieve these goals, the present invention is achieved through the following technical solutions:
A kind of online adjustable reflow type centrifugal extractor at the corresponding levels, this centrifugal extractor comprises upper shell and lower house, is provided with to be separated with rotary drum by main shaft drives in the cavity that described upper shell and lower house surround; Be provided with the heavy phase fluid collection chamber and the heavy phase collecting chamber that successively isolated for rotary drum heavy phase are exported to heavy phase drain pipe in described upper shell, be also provided with and gently export to the light phase fluid collection chamber of light phase drain pipe and light phase collecting chamber mutually by isolated for rotary drum; The both sides of described lower house are communicated with light phase feed tube with heavy phase feed tube respectively; Described light phase fluid collection chamber, light phase collecting chamber are communicated with in turn with light phase drain pipe and form light phase gathering-device, and described heavy phase fluid collection chamber, heavy phase collecting chamber are communicated with in turn with heavy phase drain pipe and form heavy phase gathering-device; The light reflux mutually at the corresponding levels that this centrifugal extractor also comprises the heavy phase that heavy phase gathering-device is communicated with heavy phase feed tube reflux at the corresponding levels and/or light phase gathering-device is communicated with light phase feed tube.
Preferably, when being provided with heavy phase corresponding levels reflux, described heavy phase reflux at the corresponding levels comprises heavy phase drainage tube, the upper end import of described heavy phase drainage tube is communicated with the liquid level lowest part near heavy phase feed tube side in heavy phase collecting chamber, the lower end outlet of heavy phase drainage tube is communicated with heavy phase feed tube, described heavy phase drainage tube is provided with heavy phase drainage control valve;
When being provided with light reflux mutually at the corresponding levels, described light reflux mutually at the corresponding levels comprises light phase drainage tube, the upper end import of described light phase drainage tube is communicated with the liquid level lowest part near light phase feed tube side in light phase collecting chamber, the lower end outlet of light phase drainage tube is communicated with light phase feed tube, and described light phase drainage tube is provided with light phase drainage control valve.
Further, described heavy phase reflux at the corresponding levels also comprises backflow heavy phase drain pipe, the pipe bottom of described heavy phase drain pipe is inserted in the import of described backflow heavy phase drain pipe, the heavy out place of described heavy phase drain pipe is provided with heavy phase stop valve, and the exit of described backflow heavy phase drain pipe is provided with backflow heavy phase stop valve; The pipe shaft of the insertion heavy phase drain pipe of described backflow heavy phase drain pipe is provided with heavy phase inlet, fluid direction in described heavy phase inlet and heavy phase drain pipe is oppositely arranged, and is provided with the discrepancy in elevation between the bottommost of the bottommost of described heavy phase inlet and described heavy phase drain pipe inwall.
Further, described backflow heavy phase drain pipe is fastened on the bottom of heavy phase drain pipe by packing_seal device, described packing_seal device comprises the soft packing_seal for being tightly wrapped on backflow heavy phase drain pipe outer wall, also comprise screw thread pair, described screw thread pair is in locking to compress described soft packing_seal and fastening backflow heavy phase drain pipe or to unclamp the discrepancy in elevation two states that regulates between the bottommost of heavy phase inlet bottommost and described heavy phase drain pipe inwall.
Preferably, described light reflux mutually at the corresponding levels also comprises the light phase drain pipe of backflow, the pipe bottom of described light phase drain pipe is inserted in the described backflow import of light phase drain pipe, the light phase export place of described light phase drain pipe is provided with light phase stop valve, and the described backflow exit of light phase drain pipe is provided with the light phase stop valve of backflow; Described backflow is provided with light phase inlet with on the pipe shaft of the insertion light phase drain pipe of light phase drain pipe, described light phase inlet is oppositely arranged with the fluid direction in light phase drain pipe, and is provided with the discrepancy in elevation between the bottommost of described light phase inlet with the bottommost of described light phase drain pipe inwall.
Further, described backflow is fastened on the bottom of light phase drain pipe by packing_seal device with light phase drain pipe, described packing_seal device comprises for being tightly wrapped in the soft packing_seal of backflow on light phase drain pipe outer wall, also comprise screw thread pair, described screw thread pair is in locking to compress described soft packing_seal and the light phase drain pipe of fastening backflow or to unclamp to regulate the discrepancy in elevation two states between light phase inlet bottommost and the bottommost of described light phase drain pipe inwall.
Preferably, be also provided with the chuck be coated on by lower house wherein in this centrifugal extractor, the bottom of described chuck arranges the import of thermal source or refrigerant, and top arranges the outlet of thermal source or refrigerant.
Preferably, described heavy phase feed tube and light phase feed tube are arranged along the face of cylinder tangential direction of lower house, and heavy phase feed tube and light phase feed tube stagger mutually, the setting position of heavy phase feed tube and light phase feed tube makes the direction of rotation of the rotary drum of feed liquid in lower house enter extracter inside; Described heavy phase drain pipe, light phase drain pipe are arranged along the face of cylinder tangential direction of lower house, and heavy phase drain pipe, light phase drain pipe stagger mutually, the setting position of heavy phase drain pipe, light phase drain pipe makes the direction of rotation of the rotary drum of discharging in lower house throw away extracter.
Preferably, when being provided with heavy phase reflux at the corresponding levels and light reflux mutually at the corresponding levels in centrifugal extractor simultaneously, the import department of described heavy phase feed tube and light phase feed tube is provided with three-way pipe, the outlet of supervisor's mouth of the three-way pipe of the heavy phase feed tube of centrifugal extractor and the heavy phase drain pipe of adjacent centrifugal extracter, the outlet of the other mouth of pipe of the three-way pipe of heavy phase feed tube and the backflow heavy phase drain pipe of adjacent centrifugal extracter; Outlet, the other mouth of pipe of the three-way pipe of light phase feed tube and the outlet of the backflow of adjacent centrifugal extracter with light phase drain pipe of supervisor's mouth of the three-way pipe of the light phase feed tube of centrifugal extractor and the light phase drain pipe of adjacent centrifugal extracter.
The technical problem that another will solve of the present invention is to provide a kind of control method of the centrifugal extractor based on said structure, and this control method have employed following technical scheme:
When being provided with heavy phase reflux at the corresponding levels and light reflux mutually at the corresponding levels in centrifugal extractor simultaneously, and when there is large stream than extraction operating mode, control method is as follows:
If heavy phase flow is less, open the heavy phase drainage control valve on heavy phase drainage tube, open the backflow heavy phase stop valve on backflow heavy phase drain pipe, close the heavy phase stop valve on heavy phase drain pipe, regulate the discrepancy in elevation between the bottommost of heavy phase inlet and the bottommost of described heavy phase drain pipe inwall, and regulate the unlatching size of heavy phase drainage control valve with adjust flux, make the two-phase flow ratio of centrifugal extractor inside be stabilized in 1:4 ~ 1:5 gradually;
If light phase flow rate is less, open the light phase drainage control valve on light phase drainage tube, open the backflow light phase stop valve of the backflow on light phase drain pipe, close the light phase stop valve on light phase drain pipe, regulate the discrepancy in elevation between the bottommost of light phase inlet and the bottommost of described light phase drain pipe inwall, and regulate the unlatching size of light phase drainage control valve with adjust flux, make the two-phase flow ratio of centrifugal extractor inside be stabilized in 1:4 ~ 1:5 gradually.
Beneficial effect of the present invention is:
1), in the present invention by arranging heavy phase reflux at the corresponding levels and light reflux mutually at the corresponding levels, heavy phase in heavy phase collecting chamber and/or heavy phase drain pipe is led back in centrifugal extractor again, or the light phase in light phase collecting chamber and/or light phase drain pipe again led back in centrifugal extractor, the flow leading back heavy phase in centrifugal extractor or light phase is adjustable simultaneously.In practical application, when certain the phase stream in centrifugal extractor is than time too small, the reflux at the corresponding levels of this phase can be opened.
Centrifugal extractor in the present invention without the need to by external equipment or change technological process, can realize at the large stream of technique than under requiring constant prerequisite, increase the actual flow ratio of centrifugal extractor inside, to meet required for centrifugal extractor process suitable compares, and adding is contact surface mutually, improve is concentration mutually, ensure that extraction process is steady, ensure that product quality, improve extraction efficiency, in actual production, also achieve significant effect.
2) reflux at the corresponding levels, in the present invention comprises drainage tube and backflow drain pipe, backflow drain pipe plugs the pipe bottom being fixed on corresponding drain pipe, and the pipe shaft that backflow drain pipe is inserted in corresponding drain pipe inside is provided with inlet, drainage tube and backflow drain pipe and corresponding drain pipe thereof are provided with valve.
When adjusting Throttling ratio, open the valve on the less drainage tube being mutually of flow and backflow drain pipe, close the valve on corresponding drain pipe, the fluid being mutually that now this flow is little is first gathered in the collecting chamber of this phase, discrepancy in elevation h is provided with between at the bottom of the bottommost of the inlet of backflow drain pipe and the pipe of corresponding drain pipe, and the valve closing on drain pipe, therefore the hydrops of this phase only exceed this height h could from backflow drain pipe fluid; Before not reaching this height h, fluid leads back the feed tube of this phase system by the drainage tube of this phase, the actual flow tying up to centrifugal extractor inside mutually making this flow less increases, generally increase to two-phase flow ratio about the suitable proportion of 1:4 ~ 1:5, reach this suitable extract stream than ratio after, this phase fluid can increase gradually, after the fluid of this phase is stable, this increase gradually of meeting of collecting in this phase collecting chamber is until liquid level exceedes the discrepancy in elevation, this phase steadily will flow out from backflow with this phase drain pipe, completes this phase corresponding levels backflow and fluid.
From the above, the centrifugal extractor in the present invention can be selected the reflux at the corresponding levels of a wherein phase according to actual needs or not select, and can not affect the use of centrifugal extractor, and the control method simultaneously in the present invention is simple, effectively and reliable.
3) discrepancy in elevation h between, at the bottom of the bottommost of the inlet of backflow drain pipe and the pipe of corresponding drain pipe can regulate, common calculating such as volume of the stream of discrepancy in elevation h required for the size of centrifugal extractor inner volume, extracter inside when heavy phase collecting chamber is determined, and certain phase drainage control valve is also by regulating opening degree to regulate return flow, thus further facilitated the adjustment of stream ratio, expand the scope of flow on-line control, improve the regulating effect of stream ratio.
4) the online adjustable reflux at the corresponding levels, in the present invention can immediately open or cut out, and can realize on-line control and not affect the normal use of centrifugal extractor.The stream of any phase of weight two-phase is smaller, can open the reflux at the corresponding levels of this phase at any time.Greatly expand the range of application of centrifugal extractor.And meet in the technique of Centrifugical extraction processing requirements entering liquid flowing ratio, then can close reflux at the corresponding levels conveniently by valve-off, not affect the normal use of centrifugal extractor.
5) centrifugal extractor, in the present invention can also use by plural serial stage, thus further expands the scope of application of the present invention.
6), centrifugal extractor in actual applications, material handling is all organic solvent.In processing procedure, big city produces the phenomenon such as heat release, emulsification, needs heat the system of process or cool.Therefore the present invention is coated with chuck in the outside of lower house, arranges the import of thermal source or refrigerant bottom chuck, and top arranges the outlet of thermal source or refrigerant, passes into heating agent or refrigerant during work, ensure that centrifugal extractor can keep stable lasting duty.
7) tangential direction that the heavy phase drain pipe, in the present invention, light phase drain pipe, heavy phase feed tube, light phase feed tube are all arranged as along upper and lower casing is arranged and mutually staggers.According to the direction of rotation of rotary drum, when arranging light phase feed tube, heavy phase feed tube, feed liquid enters centrifugal extractor inside along the direction of rotation of rotary drum; When light phase drain pipe, heavy phase drain pipe are set, discharging throws away direction along the centrifugal force of rotary drum rotated to be discharged, thus drag effect can not be produced to charging and discharging during centrifugal extractor work, also ensure that the force-bearing situation of centrifuge comparatively balances, ensure that the stable of its duty.
Accompanying drawing explanation
Fig. 1 is the structural representation of conventional centrifugal extracter.
Fig. 2 is the structural representation of the centrifugal extractor in the present invention.
Fig. 3 is I enlarged drawing of Fig. 2.
Fig. 4 is the A-A generalized section of Fig. 2.
Fig. 5 is the B-B generalized section of Fig. 2.
Connection status schematic diagram when Fig. 6 is the use of centrifugal extractor plural serial stage.
The implication marked in figure is as follows:
1-motor 2-main shaft 3-rotary drum 4-upper shell
5-lower house 51-annular gap 6-bearing
The light phase fluid collection chamber of the light phase communication port 72-of 7-light phase feed tube 71-first
The light light phase drain pipe of phase communication port 74-light phase collecting chamber 75-of 73-second
751-light phase stop valve 76-light phase drainage tube 761-light phase drainage control valve
The light phase drain pipe 771-of 77-backflow refluxes with the light phase inlet of light phase stop valve 772-
8-heavy phase feed tube 81-heavy phase communication port 82-heavy phase fluid collection chamber
83-annular heavy phase communication port 84-heavy phase collecting chamber 85-heavy phase drain pipe
851-heavy phase stop valve 86-heavy phase drainage tube 861-heavy phase drainage control valve
87-backflow heavy phase drain pipe 871-backflow heavy phase stop valve 872-heavy phase inlet
873-packing_seal device 8731-floppy disk root 8732-screw thread pair
9-chuck 10-three-way pipe 11-flexible pipe
The light phase import of N1-heavy phase import N2-
N3-light phase export N31-backflow light phase export
N4-heavy out N41-backflow heavy out
The import N6-thermal source of N5-thermal source or refrigerant or the outlet of refrigerant
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 2, centrifugal extractor comprises upper shell 4 and lower house 5; Be arranged with heavy phase collecting chamber 84 and light phase collecting chamber 74 in described upper shell 4, described heavy phase collecting chamber 84 is communicated with heavy phase drain pipe 85, and described light phase collecting chamber 74 is communicated with light phase drain pipe 75; Described lower house 5 is communicated with light phase feed tube 7 with heavy phase feed tube 8 respectively; The outside of described lower house 5 is coated with chuck 9, and the bottom of described chuck 9 arranges the import N5 of thermal source or refrigerant, and top arranges the outlet N6 of thermal source or refrigerant; Be provided with in the region that described upper shell 4 and lower house 5 surround for separating of rotary drum 3, the top of described rotary drum 3 is respectively arranged with heavy phase fluid collection chamber 82 and light phase fluid collection chamber 72, in described rotary drum 3, isolated heavy phase enters heavy phase drain pipe 85 through heavy phase communication port 81, heavy phase fluid collection chamber 82, annular heavy phase communication port 83, heavy phase collecting chamber 84 successively, and isolated light phase enters light phase drain pipe 75 through the first light phase communication port 71, the light light phase communication port 73 of phase fluid collection chamber 72, second, light phase collecting chamber 74 successively.
As shown in Figure 5, described heavy phase feed tube 8 and light phase feed tube 7 are arranged along the face of cylinder tangential direction of lower house 5, and heavy phase feed tube 8 and light phase feed tube 7 stagger mutually, the setting position of heavy phase feed tube 8 and light phase feed tube 7 makes the direction of rotation of the rotary drum 3 of feed liquid in lower house enter extracter inside; As shown in Figure 4, described heavy phase drain pipe 85, light phase drain pipe 75 are arranged along the face of cylinder tangential direction of upper shell 4, and heavy phase drain pipe 85, light phase drain pipe 75 stagger mutually, the setting position of heavy phase drain pipe 85, light phase drain pipe 75 makes discharging throw away extracter along the direction of rotation of rotary drum 3.
It should be noted that, heavy phase in the present invention reflux at the corresponding levels and gently reflux mutually at the corresponding levels can separate and arrange separately, also can arrange simultaneously.So-called separately setting is separately only be provided with heavy phase reflux at the corresponding levels in a centrifugal extractor, or is only provided with light reflux mutually at the corresponding levels.
As specific embodiment, in the centrifugal extractor in Fig. 2, be provided with heavy phase reflux at the corresponding levels and light reflux mutually at the corresponding levels simultaneously.Respectively heavy phase reflux at the corresponding levels is described further with light reflux mutually at the corresponding levels below.
A, heavy phase reflux at the corresponding levels
As shown in Figure 2, described heavy phase reflux at the corresponding levels comprises heavy phase drainage tube 86 and backflow heavy phase drain pipe 87.
As shown in Figure 2, the upper end import of described heavy phase drainage tube 86 is communicated with the liquid level lowest part near heavy phase feed tube 8 side in heavy phase collecting chamber 84, the lower end outlet of heavy phase drainage tube 86 is communicated with heavy phase feed tube 8, described heavy phase drainage tube 86 is provided with heavy phase drainage control valve 861, heavy phase drainage control valve 861 can regulate the uninterrupted of heavy phase withdrawing fluid.
As shown in Figure 2,3, the pipe bottom of described heavy phase drain pipe 85 is inserted in the import of described backflow heavy phase drain pipe 87, the heavy out N4 place of described heavy phase drain pipe 85 is provided with heavy phase stop valve 851, and the backflow heavy out N41 place of described backflow heavy phase drain pipe 87 is provided with backflow heavy phase stop valve 871.In practical application, heavy phase stop valve 851 is opened, then backflow heavy phase stop valve 871 is closed; Heavy phase stop valve 851 is closed, then backflow heavy phase stop valve 871 is opened.
The pipe shaft of the insertion heavy phase drain pipe 85 of described backflow heavy phase drain pipe 87 is provided with heavy phase inlet 872, described heavy phase inlet 872 is oppositely arranged with the fluid direction in heavy phase drain pipe 85, and is provided with discrepancy in elevation h between the bottommost of the bottommost of described heavy phase inlet 872 and described heavy phase drain pipe 85 inwall.
As shown in Figure 3, described backflow heavy phase drain pipe 87 is fastened on the bottom of heavy phase drain pipe 85 by packing_seal device 873, described packing_seal device 873 comprises soft packing_seal 8731 and screw thread pair 8732, described packing_seal device 873 is tightly wrapped on the outer wall of backflow heavy phase drain pipe 87 by soft packing_seal 8731, and is fixed by screw thread pair 8732.Packing_seal device 873 both met seal request, and the heavy phase in heavy phase drain pipe 85 can not be spilt; Backflow heavy phase drain pipe 87 is also made to have certain free degree; When unclamping screw thread pair 8732, backflow heavy phase drain pipe 87 can be twitched up or down, thus change difference in height h.By changing difference in height h, just can regulate the liquid assembled in heavy phase collecting chamber 84 easily, namely can regulate the fluid flow being entered into extracter inside by heavy phase drainage tube 86, namely increase or reduce inner the actual of heavy phase of extracter and compare.
B, light reflux mutually at the corresponding levels
As shown in Figure 2, described light reflux mutually at the corresponding levels comprises light phase drainage tube 76 and the light phase drain pipe 77 of backflow.
As shown in Figure 2, the upper end import of described light phase drainage tube 76 is communicated with the liquid level lowest part near light phase feed tube 7 side in light phase collecting chamber 74, the lower end outlet of light phase drainage tube 76 is communicated with light phase feed tube 7, described light phase drainage tube 76 is provided with light phase drainage control valve 761, and light phase drainage control valve 761 can regulate the uninterrupted of light phase withdrawing fluid.
Described light reflux mutually at the corresponding levels also comprises the light phase drain pipe 77 of backflow, the pipe bottom of described light phase drain pipe 75 is inserted in the described backflow import of light phase drain pipe 77, the light phase export place of described light phase drain pipe 75 is provided with light phase stop valve 751, and the described backflow exit of light phase drain pipe 77 is provided with the light phase stop valve 771 of backflow.In practical application, light phase stop valve 751 is opened, then reflux to close with light phase stop valve 771; Light phase stop valve 751 is closed, then reflux to open with light phase stop valve 771.
Described backflow is provided with light phase inlet 772 with on the pipe shaft of the insertion light phase drain pipe 75 of light phase drain pipe 77, described light phase inlet 772 is oppositely arranged with the fluid direction in light phase drain pipe 75, and is provided with discrepancy in elevation h between the bottommost of described light phase inlet 772 with the bottommost of described light phase drain pipe 75 inwall.
As shown in Figure 3, described backflow is fastened on the bottom of light phase drain pipe 75 by packing_seal device 873 with light phase drain pipe 77, described packing_seal device 873 comprises for being tightly wrapped in the soft packing_seal 8731 of backflow on light phase drain pipe 77 outer wall, also comprise screw thread pair 8732, described screw thread pair 8732 is in locking to compress described soft packing_seal 8731 and the light phase drain pipe 77 of fastening backflow or to unclamp to regulate the discrepancy in elevation h two states between light phase inlet 772 bottommost and the bottommost of described light phase drain pipe 75 inwall.The concrete function of packing_seal device 873 can see the record of heavy phase reflux at the corresponding levels.
As shown in Figure 6, when being provided with heavy phase reflux at the corresponding levels and light reflux mutually at the corresponding levels in centrifugal extractor simultaneously, three-way pipe 32 can be provided with in the import department of described heavy phase feed tube 8 and light phase feed tube 7, the outlet of supervisor's mouth of the three-way pipe of the heavy phase feed tube 8 of centrifugal extractor and the heavy phase drain pipe 85 of adjacent centrifugal extracter, the outlet of the other mouth of pipe of the three-way pipe of heavy phase feed tube 8 and the backflow heavy phase drain pipe 87 of adjacent centrifugal extracter; Outlet, the other mouth of pipe of the three-way pipe of light phase feed tube 7 and the outlet of the backflow of adjacent centrifugal extracter with light phase drain pipe 77 of supervisor's mouth of the three-way pipe of the light phase feed tube 7 of centrifugal extractor and the light phase drain pipe 75 of adjacent centrifugal extracter.In actual use, only can use wherein a set of reflux at the corresponding levels, close another set of reflux at the corresponding levels simultaneously.
Connect used pipeline between adjacent centrifugal extracter and be flexible pipe 11.
Below in conjunction with accompanying drawing, the course of work of the present invention is described further.
As shown in Figure 2, the material that pending density is large and heavy phase (being generally material), entered by the heavy phase import N1 of heavy phase feed tube 8; The material that density is little and light phase, be generally extractant, entered by the light phase import N2 of light phase feed tube 7.The two-phase liquid entering centrifugal extractor is by the annular gap 51 between the rotary drum 3 that rotates and lower house 5, in region, annular gap 51, because of the High Rotation Speed of rotary drum 3, violent stirring, mixing are produced to the weight two-phase entered, mixed liquor flows downward gradually, enters rotary drum 3 inner by the entrance bottom rotary drum 3.In stirring, in mixed process, the utility in extractant and material and solute generation mass transfer, exchange.After entering rotary drum 3 inside, under the influence of centrifugal force, in mixed liquor light, weigh two phase factor density and do not coexist along in rotary drum uphill process and separate gradually.The large heavy phase of density, near drum inner wall, enters heavy phase fluid collection chamber 82 by heavy phase communication port 81, then enters heavy phase collecting chamber 84 by annular heavy phase communication port 83, finally flowed out by heavy phase drain pipe 85.Little light near rotary drum axle center of density, enters light phase fluid collection chamber 72 by the first light phase communication port 71, then enters light phase collecting chamber 74 by the second light phase communication port 73, finally flowed out by light phase drain pipe 75.
Described rotary drum 3 is connected with main shaft 2, and main shaft 2 is supported by bearing 6.Motor drive shaft 2 is rotated and is driven rotary drum 3 High Rotation Speed, produces the centrifugal force needed.
If heavy phase flow is less, open the heavy phase drainage control valve 861 on heavy phase drainage tube 86, open the backflow heavy phase stop valve 871 on backflow heavy phase drain pipe 87, close the heavy phase stop valve 851 on heavy phase drain pipe 85, discrepancy in elevation h between the bottommost of adjustment heavy phase inlet 872 and the bottommost of described heavy phase drain pipe 85 inwall and heavy phase drainage control valve 861 are to regulate the heavy phase flow of drainage, now the fluid of heavy phase is first gathered in heavy phase collecting chamber 84, heavy phase leads back heavy phase feed tube 8 by heavy phase drainage tube 86, discrepancy in elevation h is provided with between at the bottom of the bottommost of the heavy phase inlet 872 on backflow heavy phase drain pipe 87 and the pipe of heavy phase drain pipe 85, and the heavy phase stop valve 851 on heavy phase drain pipe 85 is closed, therefore the heavy phase hydrops in heavy phase drain pipe 85 only exceed this height h could from backflow heavy phase drain pipe 87 fluid, before not reaching this height h, heavy phase fluid leads back this heavy phase feed tube 8 by heavy phase drainage tube 86, the actual flow of heavy phase in centrifugal extractor inside is increased, generally increase to the suitable proportion of two-phase flow ratio at 1:4 ~ 1:5, reach this suitable extract stream than ratio after, the heavy phase of collecting in heavy phase collecting chamber can increase gradually until liquid level exceedes discrepancy in elevation h, and heavy phase steadily can flow out from backflow heavy phase drain pipe 87, is more than heavy phase reflux course at the corresponding levels.
If light phase flow rate is less, open the light phase drainage control valve 761 on light phase drainage tube 76, open the backflow light phase stop valve 771 of the backflow on light phase drain pipe 77, close the light phase stop valve 751 on light phase drain pipe 75, regulate the discrepancy in elevation h between the bottommost of light phase inlet 772 and the bottommost of described light phase drain pipe 75 inwall and light phase drainage control valve 761 to regulate the light phase flow rate of drainage, now the fluid of light phase is first gathered in light phase collecting chamber 74, the phase drainage tube 76 that kicks the beam of gently communicating leads back light phase feed tube 7, because backflow is provided with discrepancy in elevation h between at the bottom of the bottommost of the light phase inlet 772 on light phase drain pipe 77 and the pipe of light phase drain pipe 16, and the light phase stop valve 751 on light phase drain pipe 75 is closed, therefore the light phase hydrops in light phase drain pipe 75 only exceedes this height h could from backflow fluid light phase drain pipe 77, before not reaching this height h, light phase fluid leads back light phase feed tube 7 by light phase drainage tube 76, the light actual flow in centrifugal extractor inside is increased, generally increase to the suitable proportion of two-phase flow ratio at 1:4 ~ 1:5, reach this suitable extract stream than ratio after, gently meeting of collecting in light phase collecting chamber increases gradually until liquid level exceedes discrepancy in elevation h, gently meets from backflow and steadily flows out with light phase drain pipe 77, is more than light reflux course mutually at the corresponding levels.
Claims (10)
1. an online adjustable reflow type centrifugal extractor at the corresponding levels, this centrifugal extractor comprises upper shell (4) and lower house (5), be provided with in the cavity that described upper shell (4) and lower house (5) surround driven by main shaft (2) be separated with rotary drum (3); Be provided with the heavy phase fluid collection chamber (82) and heavy phase collecting chamber (84) that successively rotary drum (3) isolated heavy phase are exported to heavy phase drain pipe (85) in described upper shell (4), be also provided with isolated for rotary drum (3) the light phase fluid collection chamber (72) and the light phase collecting chamber (74) that gently export to light phase drain pipe (75) mutually; The both sides of described lower house (5) are communicated with light phase feed tube (7) with heavy phase feed tube (8) respectively; Described light phase fluid collection chamber (72), light phase collecting chamber (74) are communicated with in turn with light phase drain pipe (75) and form light phase gathering-device, and described heavy phase fluid collection chamber (82), heavy phase collecting chamber (84) are communicated with in turn with heavy phase drain pipe (85) and form heavy phase gathering-device; It is characterized in that: the light reflux mutually at the corresponding levels that this centrifugal extractor also comprises the heavy phase that heavy phase gathering-device is communicated with heavy phase feed tube (8) reflux at the corresponding levels and/or light phase gathering-device is communicated with light phase feed tube (7).
2. the online adjustable reflow type centrifugal extractor at the corresponding levels of one according to claim 1, it is characterized in that: when being provided with heavy phase corresponding levels reflux, described heavy phase reflux at the corresponding levels comprises heavy phase drainage tube (86), the upper end import of described heavy phase drainage tube (86) is communicated with the liquid level lowest part near heavy phase feed tube (8) side in heavy phase collecting chamber (84), the lower end outlet of heavy phase drainage tube (86) is communicated with heavy phase feed tube (8), and described heavy phase drainage tube (86) is provided with heavy phase drainage control valve (861);
When being provided with light reflux mutually at the corresponding levels, described light reflux mutually at the corresponding levels comprises light phase drainage tube (76), the upper end import of described light phase drainage tube (76) is communicated with the liquid level lowest part near light phase feed tube (7) side in light phase collecting chamber (74), the lower end outlet of light phase drainage tube (76) is communicated with light phase feed tube (7), and described light phase drainage tube (76) is provided with light phase drainage control valve (761).
3. the online adjustable reflow type centrifugal extractor at the corresponding levels of one according to claim 2, it is characterized in that: described heavy phase reflux at the corresponding levels also comprises backflow heavy phase drain pipe (87), the pipe bottom of described heavy phase drain pipe (85) is inserted in the import of described backflow heavy phase drain pipe (87), the heavy out place of described heavy phase drain pipe (85) is provided with heavy phase stop valve (851), and the exit of described backflow heavy phase drain pipe (87) is provided with backflow heavy phase stop valve (871); The pipe shaft of the insertion heavy phase drain pipe (85) of described backflow heavy phase drain pipe (87) is provided with heavy phase inlet (872), described heavy phase inlet (872) is oppositely arranged with the fluid direction in heavy phase drain pipe (85), and is provided with the discrepancy in elevation (h) between the bottommost of the bottommost of described heavy phase inlet (872) and described heavy phase drain pipe (85) inwall.
4. the online adjustable reflow type centrifugal extractor at the corresponding levels of one according to claim 3, it is characterized in that: described backflow heavy phase drain pipe (87) is fastened on the bottom of heavy phase drain pipe (85) by packing_seal device (873), described packing_seal device (873) comprises the soft packing_seal (8731) for being tightly wrapped on backflow heavy phase drain pipe (87) outer wall, also comprise screw thread pair (8732), described screw thread pair (8732) is in locking to compress described soft packing_seal (8731) and fastening backflow heavy phase drain pipe (87) or to unclamp the discrepancy in elevation (h) two states that regulates between the bottommost of heavy phase inlet (872) bottommost and described heavy phase drain pipe (85) inwall.
5. the online adjustable reflow type centrifugal extractor at the corresponding levels of one according to claim 4, it is characterized in that: described light reflux mutually at the corresponding levels also comprises backflow with light phase drain pipe (77), the pipe bottom of described light phase drain pipe (75) is inserted in the described backflow import of light phase drain pipe (77), the light phase export place of described light phase drain pipe (75) is provided with light phase stop valve (751), and described backflow is provided with the exit of light phase drain pipe (77) and refluxes with light phase stop valve (771); The pipe shaft of described backflow by insertion light phase drain pipe (75) of light phase drain pipe (77) is provided with light phase inlet (772), described light phase inlet (772) is oppositely arranged with the fluid direction in light phase drain pipe (75), and is provided with the discrepancy in elevation (h) between the bottommost of described light phase inlet (772) with the bottommost of described light phase drain pipe (75) inwall.
6. the online adjustable reflow type centrifugal extractor at the corresponding levels of one according to claim 5, it is characterized in that: described backflow is fastened on the bottom of light phase drain pipe (75) by packing_seal device (873) with light phase drain pipe (77), described packing_seal device (873) comprises for being tightly wrapped in the soft packing_seal (8731) of backflow on light phase drain pipe (77) outer wall, also comprise screw thread pair (8732), described screw thread pair (8732) is in locking to compress described soft packing_seal (8731) and fastening backflow with light phase drain pipe (77) or unclamp to regulate the discrepancy in elevation (h) two states between light phase inlet (772) bottommost and the bottommost of described light phase drain pipe (75) inwall.
7. the online adjustable reflow type centrifugal extractor at the corresponding levels of the one according to any one of claim 1 ~ 6, it is characterized in that: in this centrifugal extractor, be also provided with the chuck (9) be coated on by lower house (5) wherein, the bottom of described chuck (9) arranges the import (N5) of thermal source or refrigerant, and top arranges the outlet (N6) of thermal source or refrigerant.
8. the online adjustable reflow type centrifugal extractor at the corresponding levels of the one according to any one of claim 1 ~ 6, it is characterized in that: described heavy phase feed tube (8) and light phase feed tube (7) are arranged along the face of cylinder tangential direction of lower house (5), and heavy phase feed tube (8) and light phase feed tube (7) stagger mutually, the setting position of heavy phase feed tube (8) and light phase feed tube (7) makes the direction of rotation of the rotary drum of feed liquid in lower house (18) enter extracter inside; Described heavy phase drain pipe (85), light phase drain pipe (75) are arranged along the face of cylinder tangential direction of lower house (5), and heavy phase drain pipe (85), light phase drain pipe (75) stagger mutually, the setting position of heavy phase drain pipe (85), light phase drain pipe (75) makes the direction of rotation of the rotary drum of discharging in lower house (18) throw away extracter.
9. the online adjustable reflow type centrifugal extractor at the corresponding levels of one according to claim 5, it is characterized in that: when being provided with heavy phase reflux at the corresponding levels and light reflux mutually at the corresponding levels in centrifugal extractor simultaneously, the import department of described heavy phase feed tube (8) and light phase feed tube (7) is provided with three-way pipe, the outlet of supervisor's mouth of the three-way pipe of the heavy phase feed tube (8) of centrifugal extractor and the heavy phase drain pipe (85) of adjacent centrifugal extracter, the outlet of the other mouth of pipe of the three-way pipe of heavy phase feed tube (8) and the backflow heavy phase drain pipe (87) of adjacent centrifugal extracter, the outlet of supervisor's mouth of the three-way pipe of the light phase feed tube (7) of centrifugal extractor and the light phase drain pipe (75) of adjacent centrifugal extracter, the other mouth of pipe of three-way pipe and the outlet of the backflow of adjacent centrifugal extracter with light phase drain pipe (77) of light phase feed tube (7).
10. the control method of a kind of online adjustable reflow type centrifugal extractor at the corresponding levels according to claim 5, it is characterized in that: when being provided with heavy phase reflux at the corresponding levels and light reflux mutually at the corresponding levels in centrifugal extractor simultaneously, and when there is large stream than extraction operating mode, control method is as follows:
If heavy phase flow is less, open the heavy phase drainage control valve (861) on heavy phase drainage tube (86), open the backflow heavy phase stop valve (871) on backflow heavy phase drain pipe (87), close the heavy phase stop valve (851) in heavy phase drain pipe (85), regulate the discrepancy in elevation (h) between the bottommost of heavy phase inlet (872) and the bottommost of described heavy phase drain pipe (85) inwall, and regulate the unlatching size of heavy phase drainage control valve (861) with adjust flux, the two-phase flow ratio of centrifugal extractor inside is made to be stabilized in 1:4 ~ 1:5 gradually,
If light phase flow rate is less, open the light phase drainage control valve (761) on light phase drainage tube (76), open the backflow of backflow on light phase drain pipe (77) with light phase stop valve (771), close the light phase stop valve (751) on light phase drain pipe (75), regulate the discrepancy in elevation (h) between the bottommost of light phase inlet (772) and the bottommost of described light phase drain pipe (75) inwall, and regulate the unlatching size of light phase drainage control valve (761) with adjust flux, the two-phase flow ratio of centrifugal extractor inside is made to be stabilized in 1:4 ~ 1:5 gradually.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105749581A (en) * | 2016-03-18 | 2016-07-13 | 太仓顺达磁力泵科技有限公司 | Centrifugal extraction device resistant to chemical corrosion |
| CN107253732A (en) * | 2016-07-13 | 2017-10-17 | 合肥通用机械研究院 | A kind of production technology of industrial grade methanol |
| CN109082523A (en) * | 2018-09-28 | 2018-12-25 | 中国恩菲工程技术有限公司 | Method centrifugation back extraction equipment and be stripped scandium |
| CN115611794A (en) * | 2022-08-18 | 2023-01-17 | 鄂尔多斯市瀚博科技有限公司 | Continuous purification process of peroxide initiator for vinyl chloride polymerization |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2140254Y (en) * | 1992-09-29 | 1993-08-18 | 叶春林 | Extracting unit of cylinder centrifugal extractor |
| US20100078382A1 (en) * | 2008-09-30 | 2010-04-01 | Japan Atomic Energy Agency | Continuous collection method of particle component in aqueous solution and apparatus therefor |
| CN202700133U (en) * | 2012-04-17 | 2013-01-30 | 青岛科技大学 | Diphase extraction rotating packing bed |
| CN203886227U (en) * | 2014-04-23 | 2014-10-22 | 北京莱伯泰科仪器股份有限公司 | Multifunctional solvent extraction device |
| CN204656059U (en) * | 2015-03-25 | 2015-09-23 | 合肥通用机械研究院 | A kind of online adjustable reflow type centrifugal extractor at the corresponding levels |
-
2015
- 2015-03-25 CN CN201510133312.4A patent/CN104784967B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2140254Y (en) * | 1992-09-29 | 1993-08-18 | 叶春林 | Extracting unit of cylinder centrifugal extractor |
| US20100078382A1 (en) * | 2008-09-30 | 2010-04-01 | Japan Atomic Energy Agency | Continuous collection method of particle component in aqueous solution and apparatus therefor |
| CN202700133U (en) * | 2012-04-17 | 2013-01-30 | 青岛科技大学 | Diphase extraction rotating packing bed |
| CN203886227U (en) * | 2014-04-23 | 2014-10-22 | 北京莱伯泰科仪器股份有限公司 | Multifunctional solvent extraction device |
| CN204656059U (en) * | 2015-03-25 | 2015-09-23 | 合肥通用机械研究院 | A kind of online adjustable reflow type centrifugal extractor at the corresponding levels |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105749581A (en) * | 2016-03-18 | 2016-07-13 | 太仓顺达磁力泵科技有限公司 | Centrifugal extraction device resistant to chemical corrosion |
| CN107253732A (en) * | 2016-07-13 | 2017-10-17 | 合肥通用机械研究院 | A kind of production technology of industrial grade methanol |
| CN107253732B (en) * | 2016-07-13 | 2019-06-11 | 合肥通用机械研究院有限公司 | A kind of production technology of industrial grade methanol |
| CN109082523A (en) * | 2018-09-28 | 2018-12-25 | 中国恩菲工程技术有限公司 | Method centrifugation back extraction equipment and be stripped scandium |
| CN109082523B (en) * | 2018-09-28 | 2023-07-25 | 中国恩菲工程技术有限公司 | Centrifugal stripping equipment and scandium stripping method |
| CN115611794A (en) * | 2022-08-18 | 2023-01-17 | 鄂尔多斯市瀚博科技有限公司 | Continuous purification process of peroxide initiator for vinyl chloride polymerization |
| CN115611794B (en) * | 2022-08-18 | 2024-04-05 | 鄂尔多斯市瀚博科技有限公司 | Continuous purification process of peroxide initiator for vinyl chloride polymerization |
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Address after: 230031 No. 888 Changjiang West Road, Shushan District, Anhui, Hefei Patentee after: HEFEI GENERAL MACHINERY RESEARCH INSTITUTE Co.,Ltd. Address before: 230031 No. 888 Changjiang West Road, Shushan District, Anhui, Hefei Patentee before: HEFEI GENERAL MACHINERY Research Institute |