RU2013146897A - METHOD AND DEVICE FOR PROCESSING FILTRATE AFTER OXYGEN DELIGNIFICATION OF THE PAST CHEMICAL PULPA PREPARED WITH A HIGH NUMBER OF CAPPA - Google Patents
METHOD AND DEVICE FOR PROCESSING FILTRATE AFTER OXYGEN DELIGNIFICATION OF THE PAST CHEMICAL PULPA PREPARED WITH A HIGH NUMBER OF CAPPA Download PDFInfo
- Publication number
- RU2013146897A RU2013146897A RU2013146897/12A RU2013146897A RU2013146897A RU 2013146897 A RU2013146897 A RU 2013146897A RU 2013146897/12 A RU2013146897/12 A RU 2013146897/12A RU 2013146897 A RU2013146897 A RU 2013146897A RU 2013146897 A RU2013146897 A RU 2013146897A
- Authority
- RU
- Russia
- Prior art keywords
- pulp
- oxygen
- washing
- lignin
- stage
- Prior art date
Links
Classifications
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- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/24—Continuous processes
-
- 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
- D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
-
- 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
- D21C7/00—Digesters
-
- 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
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
Abstract
1. Способ обработки химической пульпы, содержащий этапы, на которых:получают пульпу варкой древесной щепы в процессе щелочной варки до числа Каппа 50-120, предпочтительно, 60-100,промывают прошедшую варку пульпу,подают промытую пульпу на кислородную стадию, где обрабатывают пульпу в присутствии кислорода и щелочи для удаления лигнина,и промывают обработанную кислородом пульпу, в результате чего образуется лигнинсодержащий промывной фильтрат, отличающийся тем, чтона кислородной стадии число Каппа пульпы снижают на, по меньшей мере, 30 единиц, иупомянутый фильтрат промывки ниже по потоку от кислородной стадии обрабатывают для отделения лигнина, и обработанный фильтрат подают как промывную жидкость в промывной аппарат для прошедшей варку пульпы.2. Способ по п. 1, отличающийся тем, что Е- значение промывного аппарата для прошедшей варку пульпы составляет, по меньшей мере, 8, предпочтительно, по меньшей мере, 10.3. Способ по п. 1, отличающийся тем, что на кислородной стадии число Каппа пульпы снижается на, по меньшей мере, 35 Каппа-единиц.4. Способ по п. 1 или 3, отличающийся тем, что на кислородной стадии щелочью является гидроксид натрия.5. Способ по п. 1, отличающийся тем, что пульпу подвергают фильтрации не перед кислородной стадией, а после нее.6. Способ по п. 5, отличающийся тем, что пульпу обрабатывают на двух кислородных стадиях и подвергают фильтрации между первой кислородной стадией и промывкой ниже по потоку от второй кислородной стадии.7. Способ по п. 1 или 5, отличающийся тем, что он содержит отделение сучков перед обработкой пульпы кислородом.8. Способ по п. 1, отличающийся тем, что лигнин отделяют осаждением.9. Способ по п. 1, отл�1. A method for treating chemical pulp, comprising the steps of: obtaining pulp by pulping wood chips in the alkaline pulping process to a Kappa number of 50-120, preferably 60-100, washing the pulp that has been cooked, feeding the washed pulp to the oxygen stage, where the pulp is processed in the presence of oxygen and alkali to remove lignin, and washing the oxygen-treated pulp, resulting in a lignin-containing washing filtrate, characterized in that, in the oxygen stage, the Kappa number of the pulp is reduced by at least 30 units, and said washing filtrate downstream of the oxygen stages are treated to separate lignin and the treated filtrate is fed as a washing liquid to the pulp washer. Method according to claim 1, characterized in that the E-value of the washer for the digested pulp is at least 8, preferably at least 10.3. Method according to claim 1, characterized in that the kappa number of the pulp is reduced by at least 35 kappa units in the oxygen stage. Method according to claim 1 or 3, characterized in that sodium hydroxide is the alkali at the oxygen stage. The method according to claim 1, characterized in that the pulp is filtered not before the oxygen stage, but after it. Process according to claim 5, characterized in that the pulp is treated in two oxygen stages and subjected to filtration between the first oxygen stage and washing downstream of the second oxygen stage. Method according to claim 1 or 5, characterized in that it comprises separating knots before treating the pulp with oxygen. Method according to claim 1, characterized in that the lignin is separated by precipitation. The method according to claim 1, excellent
Claims (15)
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20115277A FI20115277A0 (en) | 2011-03-22 | 2011-03-22 | Method and arrangement for pulping |
FI20115278A FI20115278A0 (en) | 2011-03-22 | 2011-03-22 | Method and apparatus for treating pulp |
FI20115278 | 2011-03-22 | ||
FI20115277 | 2011-03-22 | ||
FI20115754A FI20115754A0 (en) | 2011-03-22 | 2011-07-15 | Process and arrangement for the treatment of chemical pulp |
FI20115754 | 2011-07-15 | ||
PCT/FI2012/050272 WO2012127111A1 (en) | 2011-03-22 | 2012-03-21 | Method and arrangement for treating filtrate after oxygen delignification of chemical pulp cooked to a high kappa number |
Publications (1)
Publication Number | Publication Date |
---|---|
RU2013146897A true RU2013146897A (en) | 2015-04-27 |
Family
ID=44318420
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU2013146897/12A RU2013146897A (en) | 2011-03-22 | 2012-03-21 | METHOD AND DEVICE FOR PROCESSING FILTRATE AFTER OXYGEN DELIGNIFICATION OF THE PAST CHEMICAL PULPA PREPARED WITH A HIGH NUMBER OF CAPPA |
Country Status (10)
Country | Link |
---|---|
US (1) | US20140102648A1 (en) |
EP (1) | EP2689063B1 (en) |
JP (1) | JP2014508866A (en) |
CN (1) | CN103459711A (en) |
BR (1) | BR112013023777A2 (en) |
CA (1) | CA2830312A1 (en) |
CL (1) | CL2013002640A1 (en) |
FI (1) | FI20115754A0 (en) |
RU (1) | RU2013146897A (en) |
WO (1) | WO2012127111A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104345126B (en) * | 2014-09-23 | 2016-02-17 | 周栋 | A kind of method of Fast Evaluation principal columns of a hall wood sulfate pulping technique |
CN104345125B (en) * | 2014-09-23 | 2016-02-17 | 周栋 | A kind of method of Fast Evaluation willow sulfate pulping technique |
CN104330525B (en) * | 2014-09-24 | 2016-03-23 | 梁朔 | A kind of method of Fast Evaluation Eucalyptus soda anthraquinone process technique |
CN104950857A (en) * | 2015-06-24 | 2015-09-30 | 黄红林 | Pulping cooking control method based on soft sensing |
EP3464713B1 (en) * | 2016-05-27 | 2023-09-27 | Fibratech Pte. Ltd | A method and a system for production of high molecular weight lignin |
FI129846B (en) * | 2019-02-01 | 2022-09-30 | Andritz Oy | Method for producing oxidized lignin in kraft pulp mill |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1070909A (en) * | 1976-05-04 | 1980-02-05 | Canadian Industries Limited | Nitrogen dioxide-oxygen delignification |
SE465815B (en) * | 1985-04-04 | 1991-11-04 | Knut Lundquist | PROCEDURE FOR IMPROVING WOOD WITH ALKALILIGNIN |
US5525195A (en) * | 1989-02-15 | 1996-06-11 | Union Camp Patent Holding, Inc. | Process for high consistency delignification using a low consistency alkali pretreatment |
US5164044A (en) * | 1990-05-17 | 1992-11-17 | Union Camp Patent Holding, Inc. | Environmentally improved process for bleaching lignocellulosic materials with ozone |
ZA92566B (en) * | 1991-02-01 | 1993-07-28 | Alcell Tech Inc | Pulping of lignocellulosic materials and recovery of resultant by-products. |
EP0530881A1 (en) * | 1991-08-14 | 1993-03-10 | Union Camp Patent Holding, Inc. | Use of wash press for pulp alkali addition process |
US5489363A (en) * | 1993-05-04 | 1996-02-06 | Kamyr, Inc. | Pulping with low dissolved solids for improved pulp strength |
WO2000047812A1 (en) * | 1999-02-15 | 2000-08-17 | Kiram Ab | Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals |
US6942754B2 (en) * | 1999-03-23 | 2005-09-13 | Oji Paper Co., Ltd. | Process for producing xylooligosaccharide from lignocellulose pulp |
WO2001059204A1 (en) * | 2000-02-14 | 2001-08-16 | Kiram Ab | Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals |
US20020129911A1 (en) * | 2000-10-16 | 2002-09-19 | Marcoccia Bruno S. | Process and configuration for providing external upflow/internal downflow in a continuous digester |
SE0202711D0 (en) * | 2002-09-12 | 2002-09-12 | Kiram Ab | Alkaline process for the manufacture of pulp using alkali metaborate as buffering alkali |
JP4039250B2 (en) * | 2003-01-16 | 2008-01-30 | 王子製紙株式会社 | Method for producing bleached pulp |
EP2061927A2 (en) * | 2006-05-19 | 2009-05-27 | The Research Foundation of the State University of New York | Methods for carbonate pretreatment and pulping of cellulosic material |
EP2247785B1 (en) * | 2008-02-21 | 2019-12-18 | Valmet AB | A method for separating lignin from black liquor, a lignin product, and use of a lignin product for the production of fuels or materials |
-
2011
- 2011-07-15 FI FI20115754A patent/FI20115754A0/en not_active Application Discontinuation
-
2012
- 2012-03-21 RU RU2013146897/12A patent/RU2013146897A/en not_active Application Discontinuation
- 2012-03-21 BR BR112013023777A patent/BR112013023777A2/en active Search and Examination
- 2012-03-21 EP EP12761412.1A patent/EP2689063B1/en active Active
- 2012-03-21 CA CA2830312A patent/CA2830312A1/en not_active Abandoned
- 2012-03-21 CN CN2012800144257A patent/CN103459711A/en active Pending
- 2012-03-21 US US13/261,740 patent/US20140102648A1/en not_active Abandoned
- 2012-03-21 JP JP2014500430A patent/JP2014508866A/en active Pending
- 2012-03-21 WO PCT/FI2012/050272 patent/WO2012127111A1/en active Application Filing
-
2013
- 2013-09-13 CL CL2013002640A patent/CL2013002640A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
CA2830312A1 (en) | 2012-09-27 |
FI20115754A0 (en) | 2011-07-15 |
CN103459711A (en) | 2013-12-18 |
EP2689063A4 (en) | 2014-10-15 |
JP2014508866A (en) | 2014-04-10 |
BR112013023777A2 (en) | 2016-12-06 |
US20140102648A1 (en) | 2014-04-17 |
EP2689063B1 (en) | 2017-08-16 |
CL2013002640A1 (en) | 2014-01-31 |
WO2012127111A1 (en) | 2012-09-27 |
EP2689063A1 (en) | 2014-01-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FA92 | Acknowledgement of application withdrawn (lack of supplementary materials submitted) |
Effective date: 20160623 |