CN100532717C

CN100532717C - Retention and water filtering system for producing paper, paper board and card paper board

Info

Publication number: CN100532717C
Application number: CNB2004100550313A
Authority: CN
Inventors: 格尔曼·韦尔加拉·洛佩斯
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-05-05
Filing date: 2004-04-29
Publication date: 2009-08-26
Anticipated expiration: 2024-04-29
Also published as: EP1475476A1; MXPA04003942A; JP2004332193A; AR044156A1; CA2466312C; BRPI0401695A; US20040221977A1; HK1072085A1; CN1576460A; CA2466312A1

Abstract

The present invention refers to the manufacturing process of paper, paperboard, cardboard and similar products (such as cellulose, fiber cement, etc.) in which, at different points of the wet end of the machine, an enhanced, concentrated, liquid smectite (avoiding herewith the need of an on-site preparation unit) and a natural or synthetic polymer are added. The said retention and drainage agents can be added in any order, thus improving the retention, drainage, formation and drying, without affecting the whiteness and enhancing the physical values of the paper, paperboard, cardboard and other similar products. In view of the problems generated by process of prior art, it has been developed a retention and drainage system, called 'TOP DUAL', recommended for the manufacturing of paper, paperboard, cardboard and other similar products, for acid, neutral and alkaline environments, in which basically two products or chemical compositions are added to the paper stock: A liquid secondary retention and drainage agent, called VERSINQUI A-250, with which the necessity of an expensive on-site preparation equipment is eliminated and A primary retention and drainage agent, called VERSINQUI.

Description

Be used to make the retention and the screening system of paper, cardboard, mill bristol etc.

Technical field

The present invention relates to the production procedure of paper, cardboard, mill bristol and similar products like (for example cellulose, concrete fibre blend etc.), at the different point of paper machine wet end, liquid terre verte that add to strengthen, concentrate (needing avoiding on-the-spot preparatory unit simultaneously) and natural or synthetic polymer.

Described retention agent and dehydrating agent can be added into any order, under the situation that does not influence whiteness, can improve retention, dehydration, moulding and drying capacity like this, and improve the physical qualities of paper, cardboard, mill bristol and similar products.

Background technology

The purpose of retention and dewatering system is to improve dehydration (removing the ability of water) and as the fiber fines of the part of page and the retention of filler.

These systems are evolved into used two or more compositions today from a kind of retention agent and dehydrating agent.When this individual system material therefor mainly was the basis with the particulate, any in them all had merits and demerits.

The desired advantage of a kind of retention and dewatering system is:

-higher output (ton/hour)

-lower production cost

-lower energy consumption

The stability preferably and the reliability of-production system

-owing to the reduction of aluminum sulfate in the system causes low acidity and the etching problem that therefore reduces

-sheet forming preferably (against light see)

The low-porosity of-paper and

The low humidity of-paper

Usually use retention agent in the paper machine, for example

-natural polymer such as starch

-synthetic polymer such as CATION, anion, amphion and non-ionic polyacrylamide and

-polyethylene oxide

The paper pulp of these products and additive useless is compared, and has the feature of the solid (fiber fines and filler) in the suspended matter of " retention " high quantity.

Therefore, in paper industry, generally adopt paper pulp retention agent and dehydrating agent at present.In the prior art, known several paper pulp retention agents and dehydrating agent for example are mainly: polyacrylamide (PAM), polyaziridine (PEI), polyamide and polyamines.

Like this, for example, U.S. Pat 3.052.595 discloses the use of the polyacrylamide that has filler, when bentonite provides the 1-20% of inorganic filler weight, can obtain beneficial effect.BP GB1.265.496 discloses polyacrylamide and how to be used to retention organic filler and cellulose fiber fines, but crucial condition must be able to guarantee operation, the particularly acrylamide of disclosed modification smoothly.German patent DE 2262906 discloses by adding bentonite and improving the cellulose suspension dehydration method as a low-molecular-weight cationic polymer of polyeletrolyte.In the prior art,, be contained in bentonitic total amount in the paper pulp roughly between the 0.02-2% of dry bentonite weight, be preferably between the 0.1-1% according to the dry weight of paper or paper pulp.The clay of bentonite type in this invention can be that a kind of bentonite (known imvite) of common commercialization is as " Wyoming bentonite " and " bleaching earth ", with may or not by chemical modification, for example calcium bentonite is become alkalescence (as sodium, potassium or ammonium) bentonite substantially by basic treatment.

Another document that relates to theme of the present invention has licensed among the U.S. Pat .4.753.710 of ALLIED COLLOID company and discloses a kind of like this processing, and cationic polymer, preferably the polymer of polyaziridine, a polyamine species chloropropylene oxide product, the muriatic polymer of a kind of diene dimethylamine or a kind of propylene monomer was added in the watery cellulose suspension before the last shear stage.Bentonite was added into after the shear stage, and this processing method produces better retention, dehydration, oven dry, sheet forming.Used bentonite is called " Hydrocol " in this described processing method.

Separately, production method according to the disclosed paper of U.S. Pat 5.178.730 that licenses to " Delta " chemical company, before the shear stage, in paper pulp, add tertiary amine or the quaternary ammonium derivative that a kind of cationic polymer is preferably polyacrylamide, with after the shear stage, before the head box, it is the natural hectorite of 0.5:1-10:1 that adding has weight ratio.Method corresponding to this patent can be applied in alkalescence or the acid papermaking technology.

In the patent of the U.S. Pat 5.876.563 of " Allied Colloids " company, a kind of cationic starch and a kind of cationic polymer, and a kind of anionic microparticles material is used as retention agent together.

On the other hand, according to the patent WO99/14432 of " Allied Colloids ", particulate benefit agents is bentonite, silica, a kind of poly-silicic acid, the little glue of polysilicate or its aluminium-modified form preferably.

The U.S. Pat 5.194.120 of " Delta " chemical company discloses the use of the silicate particulate that has cationic polymer in the retention system.Ubiquitous CATION is a magnesium in synthetic unbodied metal silicate, and polymer is preferably the tertiary amine or the quaternary ammonium derivative of polyacrylamide, and their weight rate is between 0.03:1 and 30:1.Adopt this method,, retention, dehydration and shaping are improved by than the retention agent that used less amount in the past, and the also corresponding reduction of cost.

License to the US4.305.781 patent of " Allied Colloids " in 1981, introduced clay a kind of and that the synthetic polymer mixing is used.Here it is known duplex system today (two kinds of compositions) or microparticulate systems (particle size is between nanometer and micron).

Mix and the interpolation order-clay polymer-raising drainage and retention then at first.This patent is based on a kind of nonionic linear polymer.

This and other prior art system and their shortcoming will be described in detail below.

The system of disclosed being called " ORGANOPOL " in the patent EP-A-0235893 that authorized in 1979 comprises two kinds of chemical productss:

A) ORGANOSORB, it is a kind of bentonite of that be activated or modification, and a kind of pulverous inorganic pigment adds filter box (level box) than 1.5-5% as pulpous state with weight concentration, and preferred weight ratio is 2.5%.In this prior art, to use an automatics and be used for bentonite is dispersed into powder, online continous treatment process just, is not step, can produce following problem:

-do not produce enough swollens, just, bentonite does not produce the delamination effect, owing to disperseing the holdup time very short in the bentonite preparation device automatically.Thereby bentonite does not have to improve the retention ability organic or inorganic composite colloids or the hemicolloid particle that is used to make paper, cardboard, mill bristol and other similar products;

-join the concentration that the bentonite of the paper pulp system that is used for making paper, cardboard, mill bristol and other similar products disperses and have deviation;

The device of-required continuous preparation is very big, complicated, be difficult to operation and control and cost very high (dollar $80.000);

-bentonite weight ratio surpasses more than 5%, just forms very sticking, the gelatinous dispersant that is difficult to be pumped out;

B) ORGANOPOL polymer, its be basically line style cationic polyacrylamide and molecular weight surpass 1,000,000,3,000,000 and higher (according to patent EP-A-0235893) after pressurized screen, be added in thin, the diluted paper pulp.

Therefore polymer is added into part at this place, does not allow to reduce the size of flocculate, can not obtain littler, more solid and more uniform floccule, paper, cardboard or cardboard page or leaf that can not forming.

The ORGANOPOL system also shows following shortcoming: the increase of the brightening agent consumption of loss of whiteness and thing followed optics, the negative effect of retention and dehydration and bentonitic complex process.

Afterwards, in the U.S. Pat 4.753.710 (corresponding to the Hydrocol processing method) that authorized in 1988, except the reversed order of the raw material of these two adding machines, just, at first add polymer, add clay (a kind of bentonite) then, proposed essentially identical viewpoint.

This patent adds clay (bentonite) based on the CATION linear polymer that had high molecular before the shear stage after the shear stage.Preferably at last shear point, promptly at the pressurized screen place.

Here important this two patents of pointing out, have obtained a big leap at the shear point by especially back one.In addition, the polymer of a kind of very special type of its focal attention.This system is called " Hydrocol ", shows several problems:

The in situ preparation equipment of-one essential expensive expensive $80.000 dollar;

The hydration that-bentonite is low (maximum does not have obtained);

The consumption of raw materials of-Gao (2-6 ton/ton paper);

The energy consumption of-Gao;

-complicated operations more;

The loss of-whiteness and

-excessive retention agent has a negative impact to dehydrating agent.

The duplex system that much has same target up to today is suggested, but neither one can overcome above-mentioned shortcoming.At present, CIBA company, the owner of several patents, this system more than 50% that should be able to represent paper mill, the whole world to use.

In order to provide complete information, existing system with the form of explanation of following form basic operating principle:

System	Composition 1	Composition 2	Composition 3
System	Composition 1	Composition 2	Composition 3	Particol (CIBA)	Cationic polyacrylamide	Silica gel
Poliflex (CIBA)	Cationic polyacrylamide	Contrary anion microemulsion		Particol (CIBA)	Cationic polyacrylamide	Silica gel
Poliflex (CIBA)	Cationic polyacrylamide	Contrary anion microemulsion		Composil (EKA)	Cationic starch slurry with high substituted degree	Poly-silicic acid
Positek (Nalco)	Cationic coagulant	The flocculating agent of high molecular	Borosilicate	Composil (EKA)	Cationic starch slurry with high substituted degree	Poly-silicic acid
Positek (Nalco)	Cationic coagulant	The flocculating agent of high molecular	Borosilicate	Mosaic (Buckman)	Coagulating agent	Polyacrylamide	Particulate (4 kinds of substitutes)

The merits and demerits that shows in the system of aforesaid prior art is described below:

The advantage of Particol is the possibility with low using dosage and the preparation reduction inefficacy of its scene.Corresponding shortcoming is to cause the equipment of the complexity in paper mill.

Composil is one and has the good retention and the system of drainage effect, does not influence strength characteristics, in the consumption of optical whiteness without any influence.Yet its problem is that it is only effective under alkaline system, and it is very expensive and will guarantee good dosage control (equipment).

Positeky Mosaic system needs more composition, therefore has more equipment and variable to need control; They are more complicated systems.

These and other shortcoming of the prior art is solved by the present invention, will be described in detail in the back.

Summary of the invention

In view of the problem that aforementioned system produces, we have developed following system:

Be modified according to a new retention of the present invention and screening system, be " TOP DUAL ", provide under acid, neutrality and alkaline environment and produced paper, cardboard, cardboard and similar products like, wherein two kinds of raw materials or chemical composition are added in the paper pulp basically:

A) a kind of secondary retention and dehydrating agent of liquid state are called VERSINQUI A-250, the on-the-spot preparation device of the costliness by its indispensability be cancelled and

B) a kind of elementary retention and dehydrating agent are called VERSINQUI; This is system flexibly, when comparing with any above-mentioned system, its advantage is to improve the moulding of drainage, retention, page and the processing of oven dry, improves physical parameter, and does not have the whiteness of paper feeding, cardboard, mill bristol and similar products like to have a negative impact.

Rise main when usually polymer is considered to the processing of retention, drainage and moulding in making paper, cardboard, cardboard process or more important role.These particulates, dual and even the system of triple (three compositions) obtain and realized improvement about these variablees, and be less important for this main (polymer).

We want to focus on narration at the play a major role particulate of making huge contribution of the raising to this individual system in the present invention.Why Here it is at first describes the reason of raw material VERSINQUI A-250 (promptly being commonly referred to " secondary " agent) in detail, more can play improved action than the VERSINQUI that cries " elementary " agent usually.

Description of drawings

Fig. 1 is the processing method figure that the factory of paper, cardboard, mill bristol or similar products (for example cellulose, concrete fibre blend etc.) makes processing method, comprise interpolation point that retention of the present invention and drainage handle with

Fig. 2 is the molecular structure that is used as the synthesized polymer body polymer of retention agent.In Fig. 2, a represents the molecular structure of linear polymer, and b represents the molecular structure of branch polymer and the molecular structure that c represents cross-linked polymer.

Specifically, Fig. 1 is the relevant treating apparatus of retention and drainage process points, comprises the point that raw material of the present invention is added:

A) vat (1a) correct grinding or non-correct grinding;

B) vat pump (1b) correct grinding or non-correct grinding;

C) fiberizer (2);

D) filter box (3);

E) pulp pump (4) of feeding cleansing phase;

F) other cleansing phase (5);

G) in the feeding (6) in the first pulp purifiation stage;

H) paper pulp arrival place (7) in the first pulp purifiation stage;

I) the feeding dilution water place (8) before the paper pulp that purifies enters;

J) fan pump (9);

K) inlet of pressurized screen (10a);

L) inside of pressurized screen (10b);

M) outlet of pressurized screen (10c) and

N) head box (11)

The specific embodiment

With reference to Fig. 1, it shows corresponding to the best of " TOP DUAL " system's retention agent of the present invention and dehydrating agent adds point especially.

Particularly, secondary retention and dehydrating agent that this is new, VERSINQUI A-250, the prescription that comprises a liquid state, produce by raw material supply person, can be introduced into and comprise by pump as the terre verte of main component or its chemically modified form, the bentonite of preferred a kind of standard, that be activated or modification, the concentration of its prescription is higher than 6.5% of disperse weight.This second prescription allows, especially strengthen increasing the special surface area of this described terre verte, in the paper pulp of making paper, cardboard, mill bristol and other similar products, because the existence of this terre verte, fiber fines, colloidal particles, hemicolloid particulate, retention ability organic and inorganic mixture are modified.In case second dose of VERSINQUI A-250 is added in the paper pulp, its modified pulp, the effect by second composition makes the paper pulp flocculation, is called elementary retention and dehydrating agent VERSINQUI.

Compare with aforesaid additive by the product supplied ORGANOSORB of CIBA company, it comprises that a kind of weight is less than 5% bentonite suspension, preferably the bentonite weight ratio in the dispersant is 2.5%, it is added in the filter box (3), VERSINQUI A-250 secondary retention of the present invention and dehydrating agent, in following processing stand, can be added in the papermaking machine, as shown in Figure 1:

A) in suction place (1b) of vat pump;

B) in filter box place (3);

C) in suction place (4) of pulp pump in feeding pulp purifiation stage;

D) in other pulp purifiation stage (5);

E) accept phase I (6) of pulp purifiation;

F) at the dilution water place (8) that enters before purifying paper pulp;

G) before fan pump (9);

H) before pressurized screen (10a);

I) in pressurized screen (10b) and

J) behind pressurized screen (10c).

Especially, the objective of the invention is secondary retention and dehydrating agent, the product VERSINQUI A-250 of the liquid state that this is new, easier retention is used to produce the organic and inorganic compound of paper, cardboard, mill bristol and other similar products (cellulose, concrete fibre blend etc.), for example fiber fines, filler, glue, starch, lignin and hemicellulose.

Before fan pump and elementary retention and dehydrating agent VERSINQUI, add secondary retention of the present invention and dehydrating agent VERSINQUI A-250, except starch slurry, polyethylene oxide, dry powerful resin, wet-strength resins, organic and inorganic coagulating agent and other polymer, it comprises a line style, side chain or crosslinked polyacrylamide, (10a 10b) allows to obtain first a higher total retention rate of passing through with inside before in described machine at the pressurized screen of paper machine.

In addition, add secondary retention and dehydrating agent VERSINQUIA-250 and elementary retention and dehydrating agent VERSINQUI at the point shown in the paper machine and can obtain littler, firmer and more uniform floccule, obtain a better sheet forming and can improve the physical parameter of paper, cardboard, mill bristol and other similar products, for example longitudinal strength, transverse strength, CMT, ring pressure, Cobb, Mullenexplosion, Denisson, etc.

In addition, by this system (processing method), the raw material that an adding is shown at paper machine can improve the retention ability of described paper machine, thereby reduces the level of consistence and the solid suspension in " plain boiled water ", water under papermaking wire-cloth and stock tank.

In addition, add secondary retention and dehydrating agent VERSINQUI A-250 and elementary retention and dehydrating agent VERSINQUI at the point shown in the paper machine and allow in the head box (11) at paper machine, can obtain especially that fiber distributes more uniformly in the l Water Paper page or leaf that forms gradually on papermaking wire-cloth or the stock tank with lower consistence work.

And, add the drainage capacity that secondary retention and dehydrating agent VERSINQUI A-250 and elementary retention and dehydrating agent VERSINQUI can improve paper paper pulp according to the present invention, permission is produced a kind of dry more page at the end of papermaking wire-cloth or stock tank, can save sizable steam consumption, except improving and keeping paper machine and produce the speed of product, also improve its stability.

By TOP DUAL retention of the present invention and dewatering system, it might reduce by the 150 gram/tons of chemical raw material VERSINQUI A-250 dosage to paper, being equivalent to terre verte is 40 gram/ton paper, and polymer VERSINQU is 50 gram/tons of paper, obtain high fiber retention and drainage level, be better than retention described in the prior and screening system, for example be called the system of ORGANOPOL.Because aforesaid dosage level, save appreciable consumption, saved the retention of " TOPDUAL " of paper machine in the present invention and the chemical raw material cost of screening system subsequently.

The preferred dosage level of secondary retention and dehydrating agent according to the present invention, VERSINQUI A-250 comprises: by the liquid formulation that pumps that chemical raw material supply factory provides, be between 150 gram/ton paper to the 1000 gram/ton paper; Yet the prescription dosage of prior art comprises that a kind of bentonite powder (ORGANOPOL system) is between 2000 gram/ton paper of paper and the 6000 gram/ton paper, in addition, in one situation of back, a very large and expensive equipment is used as in the continous treatment process of bentonite dispersion preparation.This described dosage according to retention of the present invention and dehydrating agent VERSINQUI A-250/VERSINQUI can improve the quality of producing paper, and is consistent with the QUALITY STANDARD of the paper of producing in all technical specification and the paper machine.

Corresponding to prior art, especially the ORGANOPOL product of CIBA company comprises the disclosed line style cationic polyacrylamide of patent EP-A-0235893 of mandate in 1979, be applied in the dual ORGANOPOL system, after the rearmost point of the main shear of machine, just behind the paper pulp of pressurized screen (10c) and flocculation modification, be added in the paper pulp thin, dilution.Yet, elementary retention of the present invention and dehydrating agent VERSINQUI, comprise line style, side chain or cross-linked polyacrylamide, except starch, polyethylene oxide, dry strength resin, wet-strength resins, outside organic and inorganic coagulating agent and other the polymer, can be added to pressure pulp screen (10a, 10b) before or inner, at first, because the big flocculate that is shaped in the paper pulp of modification, when by described pressurized screen, its formation is littler, more solid and more uniform flocculate, like this, in paper pulp, do not have lumps to exist, can obtain paper, cardboard, mill bristol or other similar products pages better are shaped.In production processing method of the present invention, can add elementary retention and dehydrating agent VERSINQUI afterwards at pressurized screen (10c).

Another advantage of the present invention is, by shown in the interpolation point processing method of adding VERSINQUI, can reduce tearing of page, correspondingly improve the output of paper machine, in addition, reduce the solid suspension in machine or the paper mill effluent sewerage.

In fact another advantage of the present invention is, select the dosage that the retention agent VERSINQUI that adds can reduce starch, glue and other chemical raw materials in the interpolation shown in the paper machine, keep standard value, reduce the BOD and the COD index of paper machine effluent sewerage, from the environmental pollution angle, bring thing followed advantage.

Because retention agent and dehydrating agent and be added with the system of these reagent according to the present invention, it makes in the paper machine more times recycle fiber becomes possibility.

At last, system of the present invention allows to work under acid, neutrality or alkaline environment and does not influence the whiteness of paper.

At aforesaid elementary retention and dehydrating agent VERSINQUI, it is a line style, polyacrylamide side chain or crosslinked or a kind of starch, polyethylene oxide (PEO), dry strength resin, wet-strength resins, organic and inorganic short coagulating agent or another kind of polymer, cohesion paper pulp.

Adding elementary retention and dehydrating agent VERSINQUI can finish at the following point of paper machine according to the present invention:

A) between the stage of paper, cardboard, mill bristol (1a) and the manufacturing processing method (10c) of the flow chart of Fig. 1 and preferably at following point:

-before fan pump (9);

-before pressurized screen (10a);

-at pressurized screen inside (10b);

-after pressurized screen (10c).

Elementary retention and dehydrating agent VERSINQUI can be prepared by following composition:

-a kind of line style, polyacrylamide side chain or crosslinked;

-starch;

-polyethylene oxide;

-dry strength and wet-strength resins;

-organic and inorganic coagulating agent and

-other polymer.

Aforesaid elementary retention and dehydrating agent are preferably produced by client factory.If constituent is a solid product, being dissolved in the automatic powder dissolution equipment of it finished so, if they are liquid, it is finished in the mode of on-line metering pump so.The dosage range of elementary retention agent is between the 50 gram/tons and 10,000 gram/tons of paper.

The interpolation stage

A) phase I that adds the chemical raw material of retention and dewatering system according to the present invention is " TOPDUAL ", is done in refining or non-refining stock tank (1a) lining.This result refining or that non-refining paper pulp is the fibrous raw material dissociation: the cloth waste cellulose, waste paper and broken etc. according to manufacturing schedule, are named production in " spiral organ " or " pulper " at one.This fibrous raw material is transformed into paper pulp, enter purification, screening stage after, arrive in this refining or non-refining vat (1a).

In suction place of the pulp pump (1b) of refining or non-refining vat (1a), add point as first, a kind of liquid chemical component that has retention and drainage character according to the present invention is added into.This chemical composition is corresponding to product VERSINQUI A-250, secondary retention and dehydrating agent.

This paper pulp that has auxiliary agent VERSINQUI A-250 arrives head box (11) then through fan pump (9), pressurized screen (10).As previously mentioned, during nine other possible interpolation points are arranged, enough auxiliary agent VERSINQUI A-250 is introduced paper pulp to make paper, cardboard, mill bristol and other similar products like.

It is very easy adding secondary agent VERSINQUI A-250, because the product that it is a kind of liquid state, can pump, in supply factory, make, and it comprises a kind of terre verte or its chemical modification terre verte, the bentonite of preferably a kind of standard, that be activated or modification is because the enough abundant this product of interpolation of the pump that it preferably distributes in the container of 1000kg and afterbody is variable.It is a kind of simple equipment: on a container, the secondary containers that has 1000kg VERSINQUI A-250 product is installed, it is according to the consumption discharging of low level container.At last, during use, when the medicament in the container above staying was unstowed, this container was replaced.The container of low level links to each other with dosing pump.

This first liquid component has following chemical formulation corresponding to secondary retention and dehydrating agent VERSINQUI A-250:

Main prescription:

Water (from about 95 ℃ of 5-): 0-92% accounts for weight

Dispersant: 1-80%, account for weight and

Terre verte (clay): 8-50% accounts for weight

Embodiment:

Warm water (40-60 ℃): 66.4%, account for weight

One of sodium polyacrylate: 9.1%, account for weight and

Terre verte (clay): 24.5%, account for weight (preferred montmorillonite)

The preparation of first liquid component of the described second auxiliary agent VERSINQUI A-250 is prepared by supply factory, make terre verte (clay) delamination, therefore, the surface area of the terre verte that this is special is increased greatly, make in the paper pulp of paper, cardboard, mill bristol and other similar products like that the retention rate of fiber fines, colloidal solid, hemicolloid particle is enhanced in the organic or inorganic component, thus by second component, promptly alleged elementary retention and dehydrating agent, the paper pulp of the modification of flocculating.

According to the present invention, secondary retention and dehydrating agent VERSINQUI A-250 are the liquid chemical components that can pump, and allowing terre verte weight concentration in aqueous dispersion is 6.5%, and this situation is not that an individual system that uses on the our times can be obtained.

Control the dosage of VERSINQUI A-250 by the variable pump of afterbody, they are preferably in the end between the 150 gram/tons and 1000 gram/tons of finished paper.Dispersant in the aforementioned formula is one of sodium polyacrylate preferably.Yet, can also come formulated product VERSINQUIA-250 with other the dispersant that is different from one of sodium polyacrylate:

A) organic salt of alquil-aril-sulfuric acid;

B) thiolignin of Jing Huaing (purified sulpholignine);

C) extract of marine alga;

D) concentrate of protein and aliphatic acid;

E) sulfuric ester;

F) sodium sulfate salt of the alquil of high molecular;

G) polycarboxylate compound;

H) phosphate: six Quadrafos, pyrophosphate, tripolyphosphate etc.;

I) sodium salt of polymerase acid;

J) alcohol

K) acetone y (acetone y);

L) glycerine.

B) method according to second stage of the present invention comprises adding liquid component or chemical raw material, is called elementary retention and dehydrating agent or VERSINQUI, and it can be:

-line style, side chain or crosslinked polyacrylamide;

-starch;

-polyethylene oxide;

-dry strength and wet-strength resins;

-organic and inorganic coagulating agent;

-other polymer.

The interpolation point position of aforesaid elementary retention agent is between the 1a to 10c of Fig. 1 flow chart.Adding elementary retention and dehydrating agent VERSINQUI preferably finishes at following point:

A) before fan pump (9);

B) before pressurized screen (10a);

C) at pressurized screen inside (10b);

A) after pressurized screen (10c).

The preparation of elementary retention and dehydrating agent and interpolation are preferably finished in client's paper mill.As fruit product is solid, finishing dissolving in the powder dissolution equipment automatically, is liquid as fruit product, finishes in the mode of online dilution dosing pump.

The dosage range of elementary retention and dehydrating agent is between the 50 gram/tons and 10.000 gram/tons of finished paper.

The prior art add-on system, the ORGANOPOL system of CIBA company, by the description contrast of front, the interpolation point of recommendation is as follows:

A) filter box (3) add ORGANOSORB, bentonite dispersant and

B) add ORGANOPOL, linear polypropylene acid amides afterwards at pressurized screen (10c).

Usually, in processing method of the present invention, the order of adding two kinds of chemical compositions or chemical products can be so not strict; That is to say, at first be that secondary retention and dehydrating agent are elementary then, and perhaps opposite, at first elementary retention and dehydrating agent be secondary retention and dehydrating agent then.In addition, in some cases, secondary retention and dehydrating agent can not use when having elementary retention and dehydrating agent.

With reference to Fig. 1, according to the present invention, the interpolation point of " TOP DUAL " retention agent and dehydration dehydrating agent system is summarized as follows:

1) VERSINQUI A-250, secondary retention and dehydrating agent:

A) in suction place (1b) of vat pump;

B) in filter box place (3);

C) in suction place (4) of the pulp pump of cleansing phase feeding paper pulp;

D) in other pulp purifiation stages (5);

E) pulp purifiation reception place (6) of phase I;

F) the dilution water place (8) before stating purification paper pulp;

G) before fan pump (9);

H) before pressurized screen (10a);

I) at pressurized screen inside (10b);

J) after pressurized screen (10c).

2) VERSINQUI, elementary retention and dehydrating agent are being made paper, cardboard, between the stage of the processing method of mill bristol or other similar products promptly from the 1a-10c of Fig. 1, but preferably:

A) before fan pump (9);

B) before pressurized screen (10a);

C) at pressurized screen inside (10b);

D) after pressurized screen (10c)

Claims

One kind in the production process of making paper, paperboard, mill bristol product, the retention of paper pulp and the processing method of drainage said method comprising the steps of:

(a) amount with finished paper 40-2000 gram per ton adds secondary retention and dehydrating agent in paper pulp, described secondary retention and dehydrating agent are with the tiny colloidal particles in the paper pulp, hemicolloid particulate and organic compound and inorganic compound retention, described secondary retention and dehydrating agent have the composition that includes the delamination terre verte, mainly are made of following composition by weight percentage:

(1) dispersant of 1-80%, described dispersant is chosen from following group: the alkyl sulfate of the concentrate of the thiolignin of polyacrylate, purification, the extract of marine alga, protein, aliphatic acid, sulfuric ester, high molecular, polycarboxylate compound, phosphate, poly-aspartic acid sodium-salt, alcohol, acetone and glycerine and their mixture, and wherein phosphate is six Quadrafos, pyrophosphate or tripolyphosphate;

(2) the delamination terre verte of 8-50% and

(3) water of 0-92%;

Wherein the temperature of secondary retention of Jia Ruing and dehydrating agent composition is in 5-95 ℃;

(b) add the elementary retention and the dehydrating agent of the paper pulp that is used to flocculate, described elementary retention and dehydrating agent are chosen from following group: line style, side chain or crosslinked polyacrylamide, starch, polyethylene oxide, dry strength and wet-strength resins, organic and inorganic coagulating agent.
2. processing method as claimed in claim 1 is characterized in that: the point that described secondary retention and dehydrating agent are chosen in the group that following interpolation point constitutes joins in the technology: some 1b, in suction place of vat pump; Point 3 is at the filter box place; Put 4, feed suction place of the pulp pump of paper pulp at cleansing phase; Point 5 is in other pulp purifiation stages; Point 6, the pulp purifiation exit of phase I; Point 8 is at the dilution water place that enters before purifying paper pulp; Point 9 is before fan pump; Point 10a is before pressurized screen; Point 10b is in pressurized screen inside; Point 10c is after pressurized screen.
3. processing method as claimed in claim 1 is characterized in that: the point that described elementary retention and dehydrating agent are chosen in the group that following point constitutes joins in the technology: before fan pump; Before the pressurized screen of paper machine; In pressurized screen inside; After pressurized screen.
4. processing method as claimed in claim 2 is characterized in that: described secondary retention and dehydrating agent are added in a continuous manner.
5. processing method as claimed in claim 1 is characterized in that: described secondary retention and dehydrating agent are added into the amount of finished paper 150 grams-1000 grams per ton.
6. processing method as claimed in claim 1 is characterized in that: described secondary retention and dehydrating agent are added in the paper pulp under acid, neutral or alkaline environment.
7. processing method as claimed in claim 1 is characterized in that: described terre verte comprises montmorillonite.
8. processing method as claimed in claim 1 is characterized in that: the composition of described secondary retention and dehydrating agent comprises following composition by weight percentage: (1) 9.1% dispersant; (2) 24.5% terre verte and (3) 66.4% water, the temperature of the composition of wherein said interpolation is in 40-60 ℃.
9. processing method as claimed in claim 1 is characterized in that: described processing method is carried out in paper plant, and described secondary retention and dehydrating agent are provided by the composition of preparing in supply factory, and is brought to paper plant's use.
10. processing method as claimed in claim 1 is characterized in that: described terre verte comprises the terre verte of chemical modification, the bentonite of standard, that be activated or modification, perhaps their mixture.
11. processing method as claimed in claim 1 is characterized in that: described secondary retention and dehydrating agent are at a 1a: in refining or non-refining vat and at a 10c: be added in the technology after pressurized screen.
12. processing method as claimed in claim 11 is characterized in that, the point that described elementary retention and dehydrating agent are chosen in the group that following point constitutes joins in the technology in a continuous manner: point 9, before fan pump; Point 10a is before pressurized screen; Point 10b, pressurized screen inside; Point 10c is after pressurized screen.
13. processing method as claimed in claim 1 is characterized in that, described elementary retention and dehydrating agent are added into the amount of finished paper 50 grams-10000 grams per ton.
14. processing method as claimed in claim 13 is characterized in that, described elementary retention and dehydrating agent are added into the amount of finished paper 100 grams-6000 grams per ton.
15. processing method as claimed in claim 1 is characterized in that, the step of elementary retention of described adding and dehydrating agent is before the step of described adding secondary retention and dehydrating agent.
16. processing method as claimed in claim 1 is characterized in that, only comprises the step that adds secondary retention and dehydrating agent.
17. processing method as claimed in claim 5 is characterized in that: the composition of described secondary retention and dehydrating agent comprises following composition by weight percentage: (1) 9.1% dispersant; (2) 24.5% terre verte and (3) 66.4% water, the temperature of the composition of wherein said interpolation is in 40-60 ℃.
18. processing method as claimed in claim 17 is characterized in that, described secondary retention and dehydrating agent add in suction place of the pulp pump cleansing phase of supplying with paper pulp.
19. processing method as claimed in claim 5 is characterized in that the terre verte content in secondary retention and dehydrating agent is 24.5%, by weight percentage.
20. processing method as claimed in claim 1 is characterized in that: secondary retention agent and dehydrating agent utilization are stirred and are heated and prepare in technology, realize bentonitic delamination thus.