US2560807A - Method of explosive pulverization - Google Patents
Method of explosive pulverization Download PDFInfo
- Publication number
- US2560807A US2560807A US2560807DA US2560807A US 2560807 A US2560807 A US 2560807A US 2560807D A US2560807D A US 2560807DA US 2560807 A US2560807 A US 2560807A
- Authority
- US
- United States
- Prior art keywords
- pressure
- slurry
- pulverization
- coal
- explosion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000010298 pulverizing process Methods 0.000 title claims description 70
- 239000002360 explosive Substances 0.000 title description 8
- 238000004880 explosion Methods 0.000 claims description 60
- 239000002002 slurry Substances 0.000 claims description 46
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 40
- 239000003245 coal Substances 0.000 claims description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 239000002245 particle Substances 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 10
- 238000005086 pumping Methods 0.000 claims description 10
- 238000004064 recycling Methods 0.000 claims description 10
- 239000008187 granular material Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000004326 stimulated echo acquisition mode for imaging Methods 0.000 claims 4
- 239000000463 material Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 10
- 239000007788 liquid Substances 0.000 description 6
- 108060002363 DRC7 Proteins 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000009834 vaporization Methods 0.000 description 4
- 239000002802 bituminous coal Substances 0.000 description 2
- 239000011362 coarse particle Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
- B02C19/186—Use of cold or heat for disintegrating
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/34—Other details of the shaped fuels, e.g. briquettes
- C10L5/36—Shape
- C10L5/366—Powders
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S48/00—Gas: heating and illuminating
- Y10S48/04—Powdered fuel injection
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S48/00—Gas: heating and illuminating
- Y10S48/07—Slurry
Definitions
- This invention relates to an improved method for reducing coal to finely powdered form and more particularly to a continuous flow explosion pulverization method in which coal is slurried with water and pumped as a slurry to an elevated pressure preliminary to explosion pulverization, after which high-pressure steam is employed as the explosion pulverization medium and is recompressed without condensation after explosion pulverization for reuse.
- Finely powdered coal has recently become of greatly increased importance because of its proposed use in combustion turbines as well as in the development of new fuels comprised of oil with nely powdered coal colloidally suspended therein. It has,.therefore, been proposed that some method of finely powdering the coal at less cost than grinding be found. It is an object of the present invention to provide such a method and it is proposed to explosively pulverize the 4into the hopper the explosion pulverization medium to a desired elevated pressure.
- coarse coal Ill is withdrawn from a supply hopper I I through a suitable means such as a standpipe I2 to be formed into a slurry in line I3 with water supplied under low pressure suitable yfor slurrying by pump I4.
- the slurry thus formed is pumped to an elevated pressure suitable for explosion pulverization by highpressure pump I5 which delivers its high-pressure slurry through line IB to tank I1.
- highpressure pump I5 which delivers its high-pressure slurry through line IB to tank I1.
- slurrying water is recycled for reuse in the slurrying step through pipe I8, pipe I9, low-pressure pump 2u on pipe 2 I.
- the coarse coal is fed from the lower portion of separator tank I1 through outlet 22 to high-pressure steam line 23 where the coarse material under high pressure is entrained in the rapidly flowing steam and carried to a suitable means for suddenly reducing the pressure, such as an explosion pulverization nozzle 25 which is illustrated as projecting the high pressure steam and entrained coarse particles against a bale 26 within a low-pressure tank 21.
- a suitable means for suddenly reducing the pressure such as an explosion pulverization nozzle 25 which is illustrated as projecting the high pressure steam and entrained coarse particles against a bale 26 within a low-pressure tank 21.
- the low-pressure steam from tank 21 is withdrawn overhead through line 28 and passed through a separator 29 in order to eliminate any particles remaining entrained, and is then diverted through line 30 to compressor 3I and, if necessary, or preferable, through a heater 32, to be recycled to the high-pressure line 23 through line 33.
- the partially pulverized coal produced in tank 21 by the explosive reduction in pressure in nozzle 25 is withdrawn through line 34 and, after being united with the particles separated in separator 29 is screened by screen 35 which permits the product powder to pass into outlet pipe 36 While the oversized particles are carried preferably by water through line 31 into line I9 to be reintroduced into the slurry and recycled through high-pressure pump I5 and the explosion pulverization step.
- tank I1 it will be found practicable to retain some of the slurry water with the coarse material so that it flows from outlet 22 in the form of a dense slurry.
- pump I5 it may be possible to eliminate tank I1 entirely and to pump the slurry directly from pump I5 to explosion pulverization means 25, preferably introducing high-pressure steam through line 33 or heating the slurry by any other suitable heating means so that when the slurry experiences a sudden reduction in pressure upon its immergence into tank 21, its water content is substantially completely vaporized; in other cases.
- this vaporization be only partial so that the coal particles falling to the bottom of tank 21 will remain suiliciently slurried to move through outlet v34 to the screened step at 35.
- the invention is, of course, not limited to the details of the particular embodiment shown.
- any suitable means for suddenly reducing the pressure may be used in the explosion pulverization step; explosion pulverization nozzle is the preferred form.
- the process might be employed without using water, it has been found that water is uniquely adapted to the process when applied to the explosion pulverization of coal; it is not reactive with coal and is readily separable therefrom by conventional drying means.
- the low-pressure steam withdrawn from tank 21 through overhead outlet- 28 isnot liqueiied but is recompressed for the purpose of saving the latent heat of vaporization.
- the steam withdrawn from line 28 may be condensed, pumped up to explosion pulverization pressure, and revaporized, thus replacing compressor 3
- the relative merits of recompression of the steam vs. condensation and revaporlzation can only be determined by a study of the quantities of steam used, its heat content at high and low pressures, construction costs; the relative costs of fuel and power and other factors involved in the construction particular plant.
- a method of pulverizing coal which includes -the steps of: reducing said coal to granular form;
- a method of pulverizing a permeable frangible material by explosion pulverization with a condensable medium which method includes the steps of: reducing said material to granular form, forming a slurry of said granular material with explosion pulverization medium in liquid form; pumping said slurry to an elevated pressure; separating the greater portion of said liquid from said slurry at elevated pressure; mixing the remaining slurry at elevated pressure with said medium in the form of a heated vapor; suddenly reducing the pressure on said mixture to produce explosion pulverization therein; recompressing the vapor remaining after said pressure reduction and recycling it to be reheated and reused in said explosion pulverization step; screening the solid particles produced by said explosion pulverization step; and recycling the over-sized particles and remaining liquid to said pumping step.
Description
` July `17, 1951 w. E. LOBO 2,560,807
METHOD OF EXPLOSIVE PULVERIZTI-ON Filed Sept. 18, 1947 /ls as INVENTOR WALTER E. LOBO ATTORNEYS I in external pressure.
Patented July 17, 1951 METHOD OF EXPLOSIVE PULVERIZATION Walter E. Lobo, Westfield, N. J., assignor to The M. W. Kellogg Co., Jersey City, N. J., a corporation of Delaware Application September 18, 1947, Serial No. 774,768
4 claims. I
This invention relates to an improved method for reducing coal to finely powdered form and more particularly to a continuous flow explosion pulverization method in which coal is slurried with water and pumped as a slurry to an elevated pressure preliminary to explosion pulverization, after which high-pressure steam is employed as the explosion pulverization medium and is recompressed without condensation after explosion pulverization for reuse.
Finely powdered coal has recently become of greatly increased importance because of its proposed use in combustion turbines as well as in the development of new fuels comprised of oil with nely powdered coal colloidally suspended therein. It has,.therefore, been proposed that some method of finely powdering the coal at less cost than grinding be found. It is an object of the present invention to provide such a method and it is proposed to explosively pulverize the 4into the hopper the explosion pulverization medium to a desired elevated pressure. After the proper pressure was attained and the explosion pulverization medium had permeated the particles of the material, the pressure was suddenly released either by opening the hopper or by passing the material through an expansion nozzle so that, the explosion pulverization medium within the interstices of each particle tended to fracture its structure and divide it because of the pressure differential created by the sudden reduction It is an obpject of the present invention to provide an explosion pulverization process in which the material in coarse form may be pumped to the elevated pressure in slurry form prior to explosion pulverization.
Although the process may be employed to pulverize materials other than coal or in connection with explosion pulverization mediums other than water or steam, it will be described in connection with the preferred process for the pulverization of bituminous coal using water as a slurrying medium and steam as all or a part of the explosion pulverization medium.
In the drawing, coarse coal Ill is withdrawn from a supply hopper I I through a suitable means such as a standpipe I2 to be formed into a slurry in line I3 with water supplied under low pressure suitable yfor slurrying by pump I4. The slurry thus formed is pumped to an elevated pressure suitable for explosion pulverization by highpressure pump I5 which delivers its high-pressure slurry through line IB to tank I1. which in the preferred form of my invention isa separator for separating the slurry water from the coarse coal. According to this preferred method, slurrying water is recycled for reuse in the slurrying step through pipe I8, pipe I9, low-pressure pump 2u on pipe 2 I. The coarse coal is fed from the lower portion of separator tank I1 through outlet 22 to high-pressure steam line 23 where the coarse material under high pressure is entrained in the rapidly flowing steam and carried to a suitable means for suddenly reducing the pressure, such as an explosion pulverization nozzle 25 which is illustrated as projecting the high pressure steam and entrained coarse particles against a bale 26 within a low-pressure tank 21.
The low-pressure steam from tank 21 is withdrawn overhead through line 28 and passed through a separator 29 in order to eliminate any particles remaining entrained, and is then diverted through line 30 to compressor 3I and, if necessary, or preferable, through a heater 32, to be recycled to the high-pressure line 23 through line 33.
The partially pulverized coal produced in tank 21 by the explosive reduction in pressure in nozzle 25 is withdrawn through line 34 and, after being united with the particles separated in separator 29 is screened by screen 35 which permits the product powder to pass into outlet pipe 36 While the oversized particles are carried preferably by water through line 31 into line I9 to be reintroduced into the slurry and recycled through high-pressure pump I5 and the explosion pulverization step.
In some cases it will be found practicable to retain some of the slurry water with the coarse material so that it flows from outlet 22 in the form of a dense slurry. In other cases it may be possible to eliminate tank I1 entirely and to pump the slurry directly from pump I5 to explosion pulverization means 25, preferably introducing high-pressure steam through line 33 or heating the slurry by any other suitable heating means so that when the slurry experiences a sudden reduction in pressure upon its immergence into tank 21, its water content is substantially completely vaporized; in other cases. it
is' preferred that this vaporization be only partial so that the coal particles falling to the bottom of tank 21 will remain suiliciently slurried to move through outlet v34 to the screened step at 35. Y
The invention is, of course, not limited to the details of the particular embodiment shown. For instance, any suitable means for suddenly reducing the pressure may be used in the explosion pulverization step; explosion pulverization nozzle is the preferred form. Although the process might be employed without using water, it has been found that water is uniquely adapted to the process when applied to the explosion pulverization of coal; it is not reactive with coal and is readily separable therefrom by conventional drying means.
It will be noted that the low-pressure steam withdrawn from tank 21 through overhead outlet- 28 isnot liqueiied but is recompressed for the purpose of saving the latent heat of vaporization. In a simplied form of the invention, the steam withdrawn from line 28 may be condensed, pumped up to explosion pulverization pressure, and revaporized, thus replacing compressor 3| by a condensate pump. The relative merits of recompression of the steam vs. condensation and revaporlzation can only be determined by a study of the quantities of steam used, its heat content at high and low pressures, construction costs; the relative costs of fuel and power and other factors involved in the construction particular plant.
I claim:
1. A method of pulverizing coal which includes -the steps of: reducing said coal to granular form;
`:forming a slurry of said granular coal with water;
pumping said slurry to an elevated pressure;
and operation of a Aas separating the greater portion of said water from said slurry at elevated pressure; mixing said granular material at elevated pressure with high pressure steam; suddenlyreducing the pressure on said mixture to produce explosion pulverization therein; recompressing the steam produced from said pressure reduction and recycling it to be reused in said explosion pulverization step;
screening said particles produced in said pulverization step; and recycling the oversized particles with water to said pumping step. Y
2. A combination as described in claim 1 in -which the steam produced by said explosion step is heated afterbeing recompressed.
3. A combination as described in claim 1 in which the water produced by said explosion is employed as at least a portion of the water used to slurry said granular coal.
4. A method of pulverizing a permeable frangible material by explosion pulverization with a condensable medium, which method includes the steps of: reducing said material to granular form, forming a slurry of said granular material with explosion pulverization medium in liquid form; pumping said slurry to an elevated pressure; separating the greater portion of said liquid from said slurry at elevated pressure; mixing the remaining slurry at elevated pressure with said medium in the form of a heated vapor; suddenly reducing the pressure on said mixture to produce explosion pulverization therein; recompressing the vapor remaining after said pressure reduction and recycling it to be reheated and reused in said explosion pulverization step; screening the solid particles produced by said explosion pulverization step; and recycling the over-sized particles and remaining liquid to said pumping step. l I
WALTER E. LOBO.
REFERENCES CITED The following references are of record in the le of this patent:
,UNITED STATES PATENTS OTHER REFERENCES Chem. & Met. Eng., February 1941, pgs. 122-125. (Copy in Scientiiic Library.)
Claims (1)
1. A METHOD OF PULVERIZING COAL WHICH INCLUDES THE STEPS OF: REDUCING SAID COAL TO GRANULAR FORM; FORMING A SLURRY OF SAID GRANULAR COAL WITH WATER; PUMPING SAID SLURRY TO AN ELEVATED PRESSURE; SEPARATING THE GREATER PORTION OF SAID WATER FROM SAID SLURRY AT ELEVATED PRESSURE; MIXING SAID GRANULAR MATERIAL AT ELEVATED PRESSURE WITH HIGH PRESSURE STEAM; SUDDENLY REDUCING THE PRESSURE ON SAID MIXTURE TO PRODUCE EXPLOSION PULVERIZATION THEREIN; RECOMPRESSING THE STEAM PRODUCED FROM SAID PRESSURE REDUCTION AND RECYCLING IT TO BE REUSED IN SAID EXPLOSION PULVERIZATION STEP; SCREENING SAID PARTICLES PRODUCED IN SAID PULVER-
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2560807A true US2560807A (en) | 1951-07-17 |
Family
ID=3438069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US2560807D Expired - Lifetime US2560807A (en) | Method of explosive pulverization |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2560807A (en) |
Cited By (36)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2668669A (en) * | 1947-09-18 | 1954-02-09 | Kellogg M W Co | Apparatus for the explosive pulverization of coal |
| US2735265A (en) * | 1956-02-21 | Bois eastman | ||
| US2735787A (en) * | 1956-02-21 | Process for pulverizing solid materials | ||
| US2735624A (en) * | 1956-02-21 | Pulverizing process | ||
| US2761824A (en) * | 1956-09-04 | Method of treatment of solid carbonaceous materials | ||
| US2763434A (en) * | 1952-05-01 | 1956-09-18 | Texas Co | Process for pulverizing solids in fluid suspension |
| US2768938A (en) * | 1954-05-24 | 1956-10-30 | Exxon Research Engineering Co | Method of coking and grinding coke |
| US2830769A (en) * | 1953-05-18 | 1958-04-15 | Texaco Development Corp | Method and apparatus for treating a solid material |
| US2832545A (en) * | 1955-03-03 | 1958-04-29 | Exxon Research Engineering Co | Supersonic jet grinding means and method |
| US2835561A (en) * | 1953-10-12 | 1958-05-20 | Cyril C Benz | Separation of molten sulfur from a slurry of its ore constituents |
| US2846150A (en) * | 1955-09-29 | 1958-08-05 | Texaco Development Corp | Fluid energy grinding |
| US2874095A (en) * | 1956-09-05 | 1959-02-17 | Exxon Research Engineering Co | Apparatus and process for preparation of seed coke for fluid bed coking of hydrocarbons |
| US2885154A (en) * | 1954-08-17 | 1959-05-05 | Texas Co | Method of and apparatus for grinding solid materials by fluid energy |
| US2914391A (en) * | 1955-03-04 | 1959-11-24 | Texaco Inc | Treating solid materials |
| US2961310A (en) * | 1957-01-22 | 1960-11-22 | Babcock & Wilcox Co | Comminuted solid fuel introduction into high pressure reaction zone |
| US3022246A (en) * | 1954-10-07 | 1962-02-20 | Exxon Research Engineering Co | Seed coke production in fluid coking systems |
| US3093457A (en) * | 1954-12-30 | 1963-06-11 | Texaco Inc | Recovery of elemental sulfur from its ores |
| US3195306A (en) * | 1962-12-17 | 1965-07-20 | Combustion Eng | Gas-steam power plant |
| US3207102A (en) * | 1962-09-25 | 1965-09-21 | Riley Stoker Corp | Slurry burner for steam generating unit |
| US3250016A (en) * | 1962-11-08 | 1966-05-10 | United States Steel Corp | Method and apparatus for preparing powdered coal for injection into a blast furnace |
| US3348599A (en) * | 1964-04-03 | 1967-10-24 | Scientism Lab | Apparatus for dewatering and dehydrating slimes and the like |
| US3388733A (en) * | 1963-06-17 | 1968-06-18 | Jackering Gunter | Process and apparatus for the separation of suspensions |
| US3482786A (en) * | 1965-11-12 | 1969-12-09 | Gerald V Hogg | Apparatus for comminuting materials |
| US3876156A (en) * | 1971-12-29 | 1975-04-08 | Bayer Ag | Method of and apparatus for the jet-pulverisation of fine grained and powdered solids |
| US4047898A (en) * | 1975-06-03 | 1977-09-13 | Texaco Inc. | Upgrading of solid fuels |
| US4052169A (en) * | 1975-02-20 | 1977-10-04 | Texaco Inc. | Treatment of solid fuels |
| WO1981002583A1 (en) * | 1980-03-06 | 1981-09-17 | Cng Res Co | Method for separating undesired components from coal by an explosion type comminution process |
| US4369351A (en) * | 1980-03-06 | 1983-01-18 | Cng Research Company | Method and apparatus for heating liquids and agglomerating slurries |
| US4373864A (en) * | 1980-03-06 | 1983-02-15 | Cng Research Company | System for pumping fluids at constant pressure |
| US4377392A (en) * | 1980-03-06 | 1983-03-22 | Cng Research Company | Coal composition |
| US4466809A (en) * | 1981-05-08 | 1984-08-21 | Creusot-Loire | Fuel supply method for a gasification chamber |
| US4469280A (en) * | 1980-03-06 | 1984-09-04 | Cng Research Company | Method for heating agglomerating slurries |
| US4625922A (en) * | 1985-01-04 | 1986-12-02 | The Goodyear Tire & Rubber Company | Elevated temperature comminution of vulcanized rubber and other elastomers |
| US4820313A (en) * | 1986-09-17 | 1989-04-11 | Kelmar Energy Corporation | Coal processing method and apparatus |
| US5102055A (en) * | 1990-05-23 | 1992-04-07 | Didier-Werke Ag | Apparatus and process for disintegrating a fiber agglomerate |
| US20140148517A1 (en) * | 2011-07-20 | 2014-05-29 | Case Western Reserve University | Dispersion of particulate clusters via the rapid vaporization of interstitial liquid |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US530635A (en) * | 1894-12-11 | blackman | ||
| US1922313A (en) * | 1931-06-27 | 1933-08-15 | Masonite Corp | Process and apparatus for disintegration of material |
| US2052426A (en) * | 1932-10-14 | 1936-08-25 | Dorr Co Inc | Method of grinding |
| US2078933A (en) * | 1937-05-04 | Pulverizing mineral aggregates |
-
0
- US US2560807D patent/US2560807A/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US530635A (en) * | 1894-12-11 | blackman | ||
| US2078933A (en) * | 1937-05-04 | Pulverizing mineral aggregates | ||
| US1922313A (en) * | 1931-06-27 | 1933-08-15 | Masonite Corp | Process and apparatus for disintegration of material |
| US2052426A (en) * | 1932-10-14 | 1936-08-25 | Dorr Co Inc | Method of grinding |
Cited By (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2735265A (en) * | 1956-02-21 | Bois eastman | ||
| US2735787A (en) * | 1956-02-21 | Process for pulverizing solid materials | ||
| US2735624A (en) * | 1956-02-21 | Pulverizing process | ||
| US2761824A (en) * | 1956-09-04 | Method of treatment of solid carbonaceous materials | ||
| US2668669A (en) * | 1947-09-18 | 1954-02-09 | Kellogg M W Co | Apparatus for the explosive pulverization of coal |
| US2763434A (en) * | 1952-05-01 | 1956-09-18 | Texas Co | Process for pulverizing solids in fluid suspension |
| US2830769A (en) * | 1953-05-18 | 1958-04-15 | Texaco Development Corp | Method and apparatus for treating a solid material |
| US2835561A (en) * | 1953-10-12 | 1958-05-20 | Cyril C Benz | Separation of molten sulfur from a slurry of its ore constituents |
| US2768938A (en) * | 1954-05-24 | 1956-10-30 | Exxon Research Engineering Co | Method of coking and grinding coke |
| US2885154A (en) * | 1954-08-17 | 1959-05-05 | Texas Co | Method of and apparatus for grinding solid materials by fluid energy |
| US3022246A (en) * | 1954-10-07 | 1962-02-20 | Exxon Research Engineering Co | Seed coke production in fluid coking systems |
| US3093457A (en) * | 1954-12-30 | 1963-06-11 | Texaco Inc | Recovery of elemental sulfur from its ores |
| US2832545A (en) * | 1955-03-03 | 1958-04-29 | Exxon Research Engineering Co | Supersonic jet grinding means and method |
| US2914391A (en) * | 1955-03-04 | 1959-11-24 | Texaco Inc | Treating solid materials |
| US2846150A (en) * | 1955-09-29 | 1958-08-05 | Texaco Development Corp | Fluid energy grinding |
| US2874095A (en) * | 1956-09-05 | 1959-02-17 | Exxon Research Engineering Co | Apparatus and process for preparation of seed coke for fluid bed coking of hydrocarbons |
| US2961310A (en) * | 1957-01-22 | 1960-11-22 | Babcock & Wilcox Co | Comminuted solid fuel introduction into high pressure reaction zone |
| US3207102A (en) * | 1962-09-25 | 1965-09-21 | Riley Stoker Corp | Slurry burner for steam generating unit |
| US3250016A (en) * | 1962-11-08 | 1966-05-10 | United States Steel Corp | Method and apparatus for preparing powdered coal for injection into a blast furnace |
| US3195306A (en) * | 1962-12-17 | 1965-07-20 | Combustion Eng | Gas-steam power plant |
| US3388733A (en) * | 1963-06-17 | 1968-06-18 | Jackering Gunter | Process and apparatus for the separation of suspensions |
| US3348599A (en) * | 1964-04-03 | 1967-10-24 | Scientism Lab | Apparatus for dewatering and dehydrating slimes and the like |
| US3482786A (en) * | 1965-11-12 | 1969-12-09 | Gerald V Hogg | Apparatus for comminuting materials |
| US3876156A (en) * | 1971-12-29 | 1975-04-08 | Bayer Ag | Method of and apparatus for the jet-pulverisation of fine grained and powdered solids |
| US4052169A (en) * | 1975-02-20 | 1977-10-04 | Texaco Inc. | Treatment of solid fuels |
| US4047898A (en) * | 1975-06-03 | 1977-09-13 | Texaco Inc. | Upgrading of solid fuels |
| US4364740A (en) * | 1980-03-06 | 1982-12-21 | Cng Research Company | Method for removing undesired components from coal |
| US4313737A (en) * | 1980-03-06 | 1982-02-02 | Consolidated Natural Gas Service | Method for separating undesired components from coal by an explosion type comminution process |
| WO1981002583A1 (en) * | 1980-03-06 | 1981-09-17 | Cng Res Co | Method for separating undesired components from coal by an explosion type comminution process |
| US4369351A (en) * | 1980-03-06 | 1983-01-18 | Cng Research Company | Method and apparatus for heating liquids and agglomerating slurries |
| US4373864A (en) * | 1980-03-06 | 1983-02-15 | Cng Research Company | System for pumping fluids at constant pressure |
| US4377392A (en) * | 1980-03-06 | 1983-03-22 | Cng Research Company | Coal composition |
| US4469280A (en) * | 1980-03-06 | 1984-09-04 | Cng Research Company | Method for heating agglomerating slurries |
| US4466809A (en) * | 1981-05-08 | 1984-08-21 | Creusot-Loire | Fuel supply method for a gasification chamber |
| US4625922A (en) * | 1985-01-04 | 1986-12-02 | The Goodyear Tire & Rubber Company | Elevated temperature comminution of vulcanized rubber and other elastomers |
| US4820313A (en) * | 1986-09-17 | 1989-04-11 | Kelmar Energy Corporation | Coal processing method and apparatus |
| US5102055A (en) * | 1990-05-23 | 1992-04-07 | Didier-Werke Ag | Apparatus and process for disintegrating a fiber agglomerate |
| US20140148517A1 (en) * | 2011-07-20 | 2014-05-29 | Case Western Reserve University | Dispersion of particulate clusters via the rapid vaporization of interstitial liquid |
| US9895668B2 (en) * | 2011-07-20 | 2018-02-20 | Case Western Reserve University | Dispersion of particulate clusters via the rapid vaporization of interstitial liquid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2560807A (en) | Method of explosive pulverization | |
| US4364740A (en) | Method for removing undesired components from coal | |
| US3229651A (en) | Process for burning different sized particulate material in a pulverized fuel burner | |
| DE2535306C2 (en) | Method and device for feeding solid fuels into a pressure gas generator | |
| US3973733A (en) | Method and apparatus for comminution of coal and other materials to ultrafine sizes | |
| US2735787A (en) | Process for pulverizing solid materials | |
| US3658259A (en) | Method for granule pulverization | |
| US2735265A (en) | Bois eastman | |
| US2550390A (en) | Method for treating fuel | |
| US20110057060A1 (en) | Biomass torrefaction mill | |
| TWI441686B (en) | Method and installation for coal grinding in inert operation or in non-inert operation | |
| US2636688A (en) | Method for treating coal and the like | |
| US2735624A (en) | Pulverizing process | |
| US4415335A (en) | Coal preparation | |
| US2904445A (en) | Portland cement manufacture from oil shale | |
| US2656308A (en) | Distillation of oil-shale | |
| US2914391A (en) | Treating solid materials | |
| US2761824A (en) | Method of treatment of solid carbonaceous materials | |
| KR20150107714A (en) | Method for producing coke caking additive therefor | |
| US2668669A (en) | Apparatus for the explosive pulverization of coal | |
| US2664390A (en) | Carbonization of coal | |
| US4067700A (en) | Method for gasifying coal | |
| US1276879A (en) | Process of extracting hydrocarbon materials from shale and similar earthy material. | |
| US5394811A (en) | Process for drying a water-containing fuel in direct contact with a hot granular solid residue | |
| US4244528A (en) | Process for micronizing of solid carbonaceous matter and preparation of carbon-oil mixtures |