CA2466312A1 - A retention and drainage system recommended for the manufacturing of paper, paperboard, cardboard and other similar products - Google Patents

A retention and drainage system recommended for the manufacturing of paper, paperboard, cardboard and other similar products Download PDF

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Publication number
CA2466312A1
CA2466312A1 CA002466312A CA2466312A CA2466312A1 CA 2466312 A1 CA2466312 A1 CA 2466312A1 CA 002466312 A CA002466312 A CA 002466312A CA 2466312 A CA2466312 A CA 2466312A CA 2466312 A1 CA2466312 A1 CA 2466312A1
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CA
Canada
Prior art keywords
retention
added
drainage
liquid
stage
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Granted
Application number
CA002466312A
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French (fr)
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CA2466312C (en
Inventor
German Lopez Vergara
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Individual
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Individual
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Publication of CA2466312A1 publication Critical patent/CA2466312A1/en
Application granted granted Critical
Publication of CA2466312C publication Critical patent/CA2466312C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/76—Processes or apparatus for adding material to the pulp or to the paper characterised by choice of auxiliary compounds which are added separately from at least one other compound, e.g. to improve the incorporation of the latter or to obtain an enhanced combined effect
    • D21H23/765—Addition of all compounds to the pulp
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/06—Paper forming aids
    • D21H21/10—Retention agents or drainage improvers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/28—Starch
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
    • D21H17/375—Poly(meth)acrylamide
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/53—Polyethers; Polyesters
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/71—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes
    • D21H17/74—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes of organic and inorganic material
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/18—Reinforcing agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/18—Reinforcing agents
    • D21H21/20—Wet strength agents

Abstract

A process for manufacturing a paper stock for use in making paper, paperboard and similar cellulosic products, by adding, at one or more different points of the wet end of the paper-making machine, a secondary retention and drainage agent containing a liquid smectite, and a primary retention and drainage agent comprising a natural or synthetic polymer. The 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. The smectite can be an enhanced, concentrated, liquid smectite that can avoid the need for an on-site preparation unit.

Claims (50)

1) Process for the retention and drainage of the stock in the manufacturing of paper, paperboard, cardboard and other similar products (such as cellulose, fiber cement, etc.) CHAR-ACTERIZED since it contemplates the adding, in a first stage, of a liquid chemical composition with properties of retaining fines, colloidal and semi-colloidal particles, of organic and inorganic compounds present in the stock, which can be added at ten different points, and then, in a second stage, the adding of a liquid composition or chemical product that can be a lin-ear, branched, or cross-linked polyacrylamide, a starch, a polyethylene oxide, a wet or dry strength resin, an organic or inorganic coagulant and another polymer with properties to flocculate the stock and which can be added preferably before the fan pump and before, inside and after the pressure screen of the paper machine.
2) Process according to claim 1 CHARACTERIZED, since a liquid composition in its first stage is added at the suction of the stock pump (lb) of the refined or non-refined stock tank (la) and is added in a continuous way.
3) Process according to claims 1 and 2 CHARACTERIZED
since a liquid composition in its first stage is added at the level box (3) and is added in a continuous way.
4) Process according to claims 1 to 3 CHARACTERIZED
since a liquid composition in its first stage is added at the suction of the stock pump (4) which feeds the depuration stage and is added in a continuous way.
5) Process according to claims 1 to 4 CHARACTERIZED
since a liquid composition in its first stage is added at the other stock depuration stages (5) and is added in a continuous way.
6) Process according to claims 1 to 5 CHARACTERIZED
since a liquid composition in its first stage is added at the accepted of the first stage of stock depuration (6) and is added in a continuous way.
7) Process according to claims 1 to 6 CHARACTERIZED
since a liquid composition in its first stage is added at the piping of the dilution water (8) before the fall of the stock accepted in the first depuration stage (7) and is added in a continuous way.
8) Process according to claims 1 to 7 CHARACTERIZED
since a liquid composition in its first stage is added at the suction of the fan pump (9) and is added in a continuous way.
9) Process according to claims 1 to 8 CHARACTERIZED
since a liquid composition in its first stage is added before the pressure screen (10a) and is added in a continuous way.
10) Process according to claims 1 to 9 CHARACTERIZED
since a liquid composition in its first stage is added inside the pressure screen (10b) and is added in a continuous way.
11) Process according to claims 1 to 10 CHARACTERIZED
since a liquid composition in its first stage is added after the pressure screen (10c) and is added in a continuous way.
12) Process according to claims 1 to 11 CHARACTERIZED
since the liquid composition in its first stage is added in a range between 40 and 2.000 g/ton produced paper.
13) Process according to claims 1 to 12 CHARACTERIZED
since the liquid composition in its first stage is added in a preferable application range between 150 and 1.000 g/ton pro-duced paper; this range corresponds to adding 40 to 250 grams of smectite per ton of paper.
14) Process according to claims 1 to 13 CHARACTERIZED
since the liquid composition in its first stage can be added to the stock in an acid, neutral or alkaline environment.
15) Liquid chemical composition with retention and drain-age properties for the manufacturing of paper, paperboard, cardboard and other similar products, according to claims 1 to 14 CHARACTERIZED since the chemical formula comprises the fol-lowing ingredients:
Water (5 - 95° C): ~0 - 92%, by weight;
Dispersing agent: ~~1 - 80%, by weight and Smectite (clay): ~~8 - 50% by weight.
16) Liquid chemical composition according to claims 1 and 15 CHARACTERIZED since the dispersing agent in the chemical formula is a sodium polyacrylate.
17) Liquid chemical composition according to claims 1, 15 and 16 CHARACTERIZED since the dispersing agent in the chemical formula is a purified sulpholignine.
18) Liquid chemical composition according to claims 1 and 15 to 17 CHARACTERIZED since the dispersing agent in the chemi-cal formula is an extract of seaweed.
19) Liquid chemical composition according to claims 1 and 15 to 18 CHARACTERIZED since the dispersing agent in the chemi-cal formula are proteins and condensed fatty acids.
20) Liquid chemical composition according to claims 1 and 15 to 19 CHARACTERIZED since the dispersing agent in the chemi-cal formula is a sulphonate ester.
21) Liquid chemical composition according to claims 1 and 15 to 20 CHARACTERIZED since the dispersing agent in the chemi-cal formula is a high molecular weight alquil sulphate sodium salt.
22) Liquid chemical composition according to claims 1 and 15 to 21 CHARACTERIZED since the dispersing agent in the chemi-cal formula is a polycarboxilic compound.
23) Liquid chemical composition according to claims 1 and 15 to 22 CHARACTERIZED since the dispersing agent in the chemi-cal formula is a phosphate: hexametaphosphate, pyrophosphate, tripolyphosphate, etc.
24) Liquid chemical composition according to claims 1 and 15 to 23 CHARACTERIZED since the dispersing agent in the chemi-cal formula is a polyaspartic acid sodium salt.
25) Liquid chemical composition according to claims 1 and 15 to 24 CHARACTERIZED since the dispersing agent in the chemi-cal formula is an alcohol.
26) Liquid chemical composition according to claims 1 and 15 to 25 CHARACTERIZED since the dispersing agent in the chemi-cal formula is an acetone.
27) Liquid chemical composition according to claims 1 and 15 to 26 CHARACTERIZED since the dispersing agent in the chemi-cal formula is glycerin.
28) Liquid chemical composition according to claims 1 and 15 to 27 CHARACTERIZED since the smectite (clay) is preferably a montmorillonite.
29) Liquid chemical composition with retention and drain-age properties for the manufacturing of paper, paperboard, cardboard and other similar products according to the process described in the claims 1 to 15 CHARACTERIZED since the chemi-cal application formula is as follows:
Warm water (40 - 60° C): ~66.4, by weight;
Dispersing agent: ~~~9.1%, by weight and Smectite (clay): ~~~24.5% by weight; (preferably montmorillonite).
30) Liquid chemical composition with retention and drain-age properties for the manufacturing of paper, paperboard, cardboard and other similar products according to the process described in the claims 1 to 15 CHARACTERIZED since the chemi-cal application formula is prepared in the factory and deliv-ered as a liquid to the paper plant.
31) Liquid chemical composition with retention and drain-age properties for the manufacturing of paper, paperboard, cardboard and other similar products according to the process described in the claims 1 to 15 and 29 CHARACTERIZED since the chemical application formula contains a smectite or a chemi-tally modified version thereof, preferably a normal, activated or modified bentonite.
32) Process according to claim 1 CHARACTERIZED since the primary retention and drainage agent can be added in any stage of the process of manufacturing paper, paperboard, cardboard and other similar products, between the points (1a) and (10c).
33) Process according to claims 1 and 32 CHARACTERIZED
since a liquid composition or chemical product in the second stage is added preferably before the fan pump (9) and is added in a continuous way.
34) Process according to claims 1, 32 and 33 CHARACTER-IZED since a liquid composition or chemical product in the sec-ond stage is added preferably before the pressure screen (10a) and is added in a continuous way.
35) Process according to claims 1, 32 to 34 CHARACTERIZED
since a liquid composition or chemical product in the second stage is added preferably inside the pressure screen (10b) and is added in a continuous way.
36) Process according to claims 1, 32 to 35 CHARACTERIZED
since a liquid composition or chemical product in the second stage is added preferably after the pressure screen (10c) and is added in a continuous way.
37) Process according to claims 1 and 32 to 36 CHARACTER-IZED since the dosage range of the liquid composition or chemi-cal product in the second phase lies between 50 and 10.000 g/ton produced paper.
38) Process according to claims 1 and 32 to 37 CHARACTER-IZED since the liquid composition or chemical product has an application range between 100 and 6.000 g/ton of produced pa-per.
39) Liquid composition or chemical product with retention and drainage properties according to claim 1 CHARACTERIZED

since the retention and drainage agent is a linear polyacryla-mide.
40) Liquid composition or chemical product with retention and drainage properties according to claims 1 and 39 CHARACTER-IZED since the retention and drainage agent is a branched poly-acrylamide.
41) Liquid composition or chemical product with retention and drainage properties according to claims 1 , 39 and 40 CHAR-ACTERIZED since the retention and drainage agent is a cross-linked polyacrylamide.
42) Liquid composition or chemical product with retention and drainage properties according to claims 1 and 39 to 41 CHARACTERIZED since the retention and drainage agent is a starch.
43) Liquid composition or chemical product with retention and drainage properties according to claims 1 and 39 to 42 CHARACTERIZED since the retention and drainage agent is a dry strength resin.
44) Liquid composition or chemical product with retention and drainage properties according to claims 1 and 39 to 43 CHARACTERIZED since the retention and drainage agent is a wet strength resin.
45) Liquid composition or chemical product with retention and drainage properties according to claims 1 and 39 to 44 CHARACTERIZED since the retention and drainage agent is a or-ganic coagulant.
46) Liquid composition or chemical product with retention and drainage properties according to claims 1 and 39 to 45 CHARACTERIZED since the retention and drainage agent is an in-organic coagulant.
47) Liquid composition or chemical product with retention and drainage properties according to claims 1 and 39 to 46 CHARACTERIZED since the retention and drainage agent is a poly-ethylene oxide.
48) Liquid composition or chemical product with retention and drainage properties according to claims 1 and 39 to 47 CHARACTERIZED since the retention and drainage agent can be an-other polymer.
49) Retention and drainage process according to claim 1 CHARACTERIZED since the adding sequence of the two retention and drainage agents can be indistinctive; first the secondary retention and drainage agent and then the primary retention and drainage agent or, vice versa, first the primary retention and drainage agent and then the secondary retention and drainage agent.
50) Retention and drainage process according to claims 1 and 49 CHARACTERIZED since the secondary retention and drainage agent can be used alone, without the primary retention and drainage agent.
CA2466312A 2003-05-05 2004-05-04 A retention and drainage system recommended for the manufacturing of paper, paperboard, cardboard and other similar products Expired - Fee Related CA2466312C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CLCL904-2003 2003-05-05
CL2003000904 2003-05-05

Publications (2)

Publication Number Publication Date
CA2466312A1 true CA2466312A1 (en) 2004-11-05
CA2466312C CA2466312C (en) 2012-07-10

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CA2466312A Expired - Fee Related CA2466312C (en) 2003-05-05 2004-05-04 A retention and drainage system recommended for the manufacturing of paper, paperboard, cardboard and other similar products

Country Status (9)

Country Link
US (1) US20040221977A1 (en)
EP (1) EP1475476A1 (en)
JP (1) JP2004332193A (en)
CN (1) CN100532717C (en)
AR (1) AR044156A1 (en)
BR (1) BRPI0401695A (en)
CA (1) CA2466312C (en)
HK (1) HK1072085A1 (en)
MX (1) MXPA04003942A (en)

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Also Published As

Publication number Publication date
EP1475476A1 (en) 2004-11-10
MXPA04003942A (en) 2007-06-29
JP2004332193A (en) 2004-11-25
AR044156A1 (en) 2005-08-24
CA2466312C (en) 2012-07-10
BRPI0401695A (en) 2005-01-18
US20040221977A1 (en) 2004-11-11
HK1072085A1 (en) 2005-08-12
CN1576460A (en) 2005-02-09
CN100532717C (en) 2009-08-26

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