CA2553662A1 - Method for reducing the extractives content of high-yield pulps and method for producing bleached high-yield pulps - Google Patents
Method for reducing the extractives content of high-yield pulps and method for producing bleached high-yield pulps Download PDFInfo
- Publication number
- CA2553662A1 CA2553662A1 CA002553662A CA2553662A CA2553662A1 CA 2553662 A1 CA2553662 A1 CA 2553662A1 CA 002553662 A CA002553662 A CA 002553662A CA 2553662 A CA2553662 A CA 2553662A CA 2553662 A1 CA2553662 A1 CA 2553662A1
- Authority
- CA
- Canada
- Prior art keywords
- pulp
- surfactant
- peroxide bleaching
- added
- organic stabilizer
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract 23
- 238000004519 manufacturing process Methods 0.000 title claims abstract 3
- 238000004061 bleaching Methods 0.000 claims abstract 20
- 150000002978 peroxides Chemical class 0.000 claims abstract 20
- 239000004094 surface-active agent Substances 0.000 claims abstract 15
- 239000003381 stabilizer Substances 0.000 claims abstract 13
- 238000005406 washing Methods 0.000 claims abstract 7
- 239000008346 aqueous phase Substances 0.000 claims abstract 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims 4
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims 4
- 238000010790 dilution Methods 0.000 claims 4
- 239000012895 dilution Substances 0.000 claims 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 4
- 229920001732 Lignosulfonate Polymers 0.000 claims 2
- 239000004117 Lignosulphonate Substances 0.000 claims 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims 2
- 239000002253 acid Substances 0.000 claims 2
- -1 alkyl phenol Chemical compound 0.000 claims 2
- 239000003945 anionic surfactant Substances 0.000 claims 2
- 229920001577 copolymer Polymers 0.000 claims 2
- 150000001991 dicarboxylic acids Chemical class 0.000 claims 2
- 239000003995 emulsifying agent Substances 0.000 claims 2
- 150000002191 fatty alcohols Chemical class 0.000 claims 2
- 229920001519 homopolymer Polymers 0.000 claims 2
- 235000019357 lignosulphonate Nutrition 0.000 claims 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims 2
- 239000011976 maleic acid Substances 0.000 claims 2
- 239000000203 mixture Substances 0.000 claims 2
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 claims 2
- 239000002736 nonionic surfactant Substances 0.000 claims 2
- 229920000642 polymer Polymers 0.000 claims 2
- 150000003839 salts Chemical class 0.000 claims 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims 2
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/08—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1026—Other features in bleaching processes
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Extraction Or Liquid Replacement (AREA)
- Steroid Compounds (AREA)
Abstract
The invention relates to a method for reducing the content of extractives of a high-yield pulp in a peroxide bleaching stage, said stage including peroxide bleaching and a subsequent dewatering or washing, said method comprising contacting the pulp in the peroxide bleaching with an organic stabilizer and in or after the peroxide bleaching with a surfactant, and thereafter subjecting the bleached pulp to said dewatering or washing for removing extractives along with the aqueous phase. The invention also relates to a method for producing bleached high-yield pulp.
Claims (20)
1. A method for reducing the content of extractives of a high-yield pulp in a peroxide bleaching stage, said stage including peroxide bleaching and a subsequent dewatering or washing, said method comprising contacting the pulp in the peroxide bleaching with an organic stabilizer and in or after the peroxide bleaching with a surfactant, and thereafter subjecting the bleached pulp to said dewatering or washing for removing extractives along with the aqueous phase.
2. The method according to claim 1 wherein the organic stabilizer and the surfactant are added to the pulp in the peroxide bleaching.
3. The method according to claim 1 wherein the organic stabilizer and the surfactant are added to the pulp before the peroxide bleaching.
4. The method according to claim 1 wherein the surfactant is added to the pulp after the peroxide bleaching.
5. The method according to any of claims 1 to 4 wherein dilution water is added to the pulp between the peroxide bleaching and the dewatering or washing.
6. The method according to claim 5 wherein the surfactant is added to the dilution water.
7. The method according to any of claims 1 to 6 wherein the organic stabilizer comprises a polymeric stabilizer, such as a poly-alfa-hydroxyacrylic acid or a salt thereof or the corresponding polylactone, a homopolymer of acrylic acid, methacrylic acid or maleic acid or a copolymer of acrylic acid and/or methacrylic acid with an unsaturated dicarboxylic acid or a mixture of these polymers.
8. The method according to any of claims 1 to 7 wherein the amount of the organic stabilizer is from 0.1 kg to 5 kg per ton dry pulp, preferably from 0.25 kg to 3 kg per ton dry pulp.
9. The method according to any of claims 1 to 8 wherein the surfactant comprises an anionic surfactant, such as naphthalene sulphonate or lignosulphonate, or a non-ionic surfactant, such as an O/W emulsifier, f. ex. a fatty alcohol ethoxylate or alkyl phenol ethoxylate.
10. The method according to any of claims 1 to 9 wherein the amount of the surfactant is from 0.005 kg to 2 kg per ton dry pulp, preferably from 0.05 kg to 1 kg per ton dry pulp.
11. A method for producing bleached high-yield pulp having a reduced content of extractives comprising bleaching high-yield pulp with peroxide, the pulp being contacted with an organic stabilizer during the peroxide bleaching and with a surfactant during the peroxide bleaching or after the peroxide bleaching, and dewatering or washing the bleached pulp for removing extractives along with the aqueous phase and for producing bleached high-yield pulp having a reduced content of extractives.
12. The method according to claim 11 wherein the organic stabilizer and the surfactant are added to the pulp in the peroxide bleaching.
13. The method according to claim 11 wherein the organic stabilizer and the surfactant are added to the pulp before the peroxide bleaching.
14. The method according to claim 11 wherein the surfactant is added to the pulp after the peroxide bleaching.
15. The method according to any of claims 11 to 14 wherein dilution water is added to the pulp between the peroxide bleaching and the dewatering or washing.
16. The method according to claim 15 wherein the surfactant is added to the dilution water.
17. The method according to any of claims 11 to 16 wherein the organic stabilizer comprises a polymeric stabilizer, such as a poly-alfa-hydroxyacrylic acid or a salt thereof or the corresponding polylactone, a homopolymer of acrylic acid, methacrylic acid or maleic acid or a copolymer of acrylic acid and/or methacrylic acid with an unsaturated dicarboxylic acid or a mixture of these polymers.
18. The method according to any of claims 11 to 17 wherein the amount of the organic stabilizer is from 0.1 kg to 5 kg per ton dry pulp, preferably from 0.25 kg to 3 kg per ton dry pulp.
19. The method according to any of claims 11 to 18 wherein the surfactant comprises an anionic surfactant, such as naphthalene sulphonate or lignosulphonate, or a non-ionic surfactant, such as an O/W emulsifier, f. ex. a fatty alcohol ethoxylate or alkyl phenol ethoxylate.
20. The method according to any of claims 11 to 19 wherein the amount of the surfactant is from 0.005 kg to 2 kg per ton dry pulp, preferably from 0.05 kg to 1 kg per ton dry pulp.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20040282A FI121385B (en) | 2004-02-24 | 2004-02-24 | Process for Reducing Extract Substance in High Yield Masses and Process for Preparing Bleached High Yield Masses |
| FI20040282 | 2004-02-24 | ||
| PCT/FI2005/000112 WO2005080672A2 (en) | 2004-02-24 | 2005-02-23 | Method for reducing the extractives content of high-yield pulps and method for producing bleached high-yield pulps |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2553662A1 true CA2553662A1 (en) | 2005-09-01 |
| CA2553662C CA2553662C (en) | 2012-10-23 |
Family
ID=31725758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2553662A Active CA2553662C (en) | 2004-02-24 | 2005-02-23 | Method for reducing the extractives content of high-yield pulps and method for producing bleached high-yield pulps |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20070272378A1 (en) |
| EP (1) | EP1718801B1 (en) |
| CN (1) | CN100591842C (en) |
| AT (1) | ATE376094T1 (en) |
| BR (1) | BRPI0507851A (en) |
| CA (1) | CA2553662C (en) |
| DE (1) | DE602005002933T2 (en) |
| FI (1) | FI121385B (en) |
| WO (1) | WO2005080672A2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI20070126A0 (en) | 2006-09-08 | 2007-02-13 | Linde Ag | Process for de-pulping and using carbon dioxide or (bi) carbonate for this |
| WO2013178875A1 (en) * | 2012-05-29 | 2013-12-05 | Kemira Oyj | A process for the treatment of fibre material and a new composition |
| TW201610265A (en) | 2014-05-20 | 2016-03-16 | 喬治亞太平洋消費者產品公司 | Bleaching and shive reduction process for non-wood fibers |
| TW201610261A (en) | 2014-05-20 | 2016-03-16 | 喬治亞太平洋消費者產品公司 | Bleaching and shive reduction process for non-wood fibers |
| TW201544652A (en) * | 2014-05-20 | 2015-12-01 | Georgia Pacific Consumer Prod | Bleaching and shive reduction process for non-wood fibers |
| CN111344455B (en) | 2017-09-11 | 2022-10-28 | 索理思科技公司 | Method for enhancing oxygen delignification of chemical wood pulp |
| EP3877586A4 (en) * | 2018-11-07 | 2022-06-29 | Kemira Oyj | A composition for use as peroxide stabilizer |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU74434A1 (en) * | 1976-02-25 | 1977-09-12 | ||
| DE3423452A1 (en) * | 1984-06-26 | 1986-01-02 | Sandoz-Patent-GmbH, 7850 Lörrach | Stabilising mixture for the peroxide bleaching of cellulose-containing materials |
| US4963157A (en) * | 1987-04-17 | 1990-10-16 | Nippon Peroxide Co., Ltd. | Method for bleaching cellulosic fiber material with hydrogen peroxide |
| US5234544A (en) * | 1989-10-18 | 1993-08-10 | Air Products And Chemicals, Inc. | Cleaning and bleaching of secondary fiber |
| JP3191828B2 (en) * | 1992-05-27 | 2001-07-23 | 三菱瓦斯化学株式会社 | Deinking and bleaching of used printing paper |
| DE4344029A1 (en) * | 1993-12-23 | 1995-06-29 | Grillo Werke Ag | Copolymers of unsaturated carboxylic acids, process for their preparation and their use |
| CN1088484C (en) * | 1999-06-15 | 2002-07-31 | 杭州市化工研究所 | Resin obstruction controlling agent for paper making |
| US6461477B1 (en) * | 2000-03-23 | 2002-10-08 | Hercules Incorporated | Proteins and polymers for use as pitch and stickies control agents in pulp and papermaking processes |
-
2004
- 2004-02-24 FI FI20040282A patent/FI121385B/en active IP Right Grant
-
2005
- 2005-02-23 WO PCT/FI2005/000112 patent/WO2005080672A2/en active IP Right Grant
- 2005-02-23 EP EP05717239A patent/EP1718801B1/en active Active
- 2005-02-23 DE DE602005002933T patent/DE602005002933T2/en active Active
- 2005-02-23 CA CA2553662A patent/CA2553662C/en active Active
- 2005-02-23 CN CN200580005933A patent/CN100591842C/en active Active
- 2005-02-23 AT AT05717239T patent/ATE376094T1/en not_active IP Right Cessation
- 2005-02-23 BR BRPI0507851-2A patent/BRPI0507851A/en not_active IP Right Cessation
- 2005-02-23 US US10/590,297 patent/US20070272378A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| EP1718801B1 (en) | 2007-10-17 |
| WO2005080672A3 (en) | 2005-12-08 |
| FI20040282A (en) | 2005-08-25 |
| DE602005002933T2 (en) | 2008-07-24 |
| BRPI0507851A (en) | 2007-07-10 |
| DE602005002933D1 (en) | 2007-11-29 |
| EP1718801A2 (en) | 2006-11-08 |
| ATE376094T1 (en) | 2007-11-15 |
| CN1922359A (en) | 2007-02-28 |
| FI20040282A0 (en) | 2004-02-24 |
| CA2553662C (en) | 2012-10-23 |
| US20070272378A1 (en) | 2007-11-29 |
| CN100591842C (en) | 2010-02-24 |
| FI121385B (en) | 2010-10-29 |
| WO2005080672A2 (en) | 2005-09-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2553662A1 (en) | Method for reducing the extractives content of high-yield pulps and method for producing bleached high-yield pulps | |
| JP4499280B2 (en) | Bleaching chemical pulp with peracids. | |
| JPH108092A (en) | Stabilizer for peroxide bleaching treatment and bleaching of fibrous substance with the same | |
| JPH08503750A (en) | A method for delignification of pulp containing lignocellulose | |
| FI125172B (en) | Impregnation system and its use | |
| JP3213320B2 (en) | Processing of cellulosic materials and compositions used therefor | |
| US20100269994A1 (en) | Method for treating ligno-cellulosic materials | |
| CA2453131A1 (en) | Processes for preparing mechanical pulps having high brightness | |
| CA2643093C (en) | Near-neutral chlorine dioxide bleaching of pulp | |
| JP5478610B2 (en) | Pulp bleaching method using ozone, chlorine dioxide and peroxide | |
| CZ132895A3 (en) | Bleaching process of pulp containing ligno-cellulose | |
| WO2001075220A1 (en) | A method for controlling the delignification and bleaching of a pulp suspension | |
| JP2001003287A (en) | Oxygen delignification of lignocellulose material | |
| US7001484B2 (en) | Peroxide bleaching of wood pulp using stabilizers and sodium hydrosulfide reducing agent | |
| WO2000052258A1 (en) | Bleaching of pulp with peracid as final bleaching agent | |
| RU2072014C1 (en) | Method for bleaching lignocellulose-containing wood pulp | |
| RU2744382C1 (en) | Method of producing soap from black liquors of sulphate production | |
| US11970816B2 (en) | Dual surfactant digester additive composition and a method for enhancing the pulping of wood chips using the same | |
| CA1067254A (en) | Recovery of tall oil soaps | |
| JPH08120580A (en) | Deinking of printed waste paper | |
| JP2852105B2 (en) | Ozone bleaching of pulp | |
| FI123012B (en) | Process for controlling extractive substances in pulp production, pulp so produced and its use | |
| TW201009162A (en) | Deinking a cellulosic substrate using an inorganic mineral | |
| DE10215277A1 (en) | Oxidation and bleaching systems (used e.g. in pulp delignification, waste water treatment, organic syntheses or coal liquefaction) work by hydrolase-catalyzed formation of hydroxamic acids | |
| JPH11140782A (en) | Deining |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |