ZA973887B - Batch process for preparing improved kraft pulp. - Google Patents
Batch process for preparing improved kraft pulp.Info
- Publication number
- ZA973887B ZA973887B ZA9703887A ZA973887A ZA973887B ZA 973887 B ZA973887 B ZA 973887B ZA 9703887 A ZA9703887 A ZA 9703887A ZA 973887 A ZA973887 A ZA 973887A ZA 973887 B ZA973887 B ZA 973887B
- Authority
- ZA
- South Africa
- Prior art keywords
- batch process
- kraft pulp
- derivative
- preparing improved
- green liquor
- Prior art date
Links
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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/0064—Aspects concerning the production and the treatment of green and white liquors, e.g. causticizing green liquor
-
- 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
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Reinforced Plastic Materials (AREA)
- Secondary Cells (AREA)
Abstract
An improved batch process for preparing kraft pulp is disclosed, wherein a portion of green liquor or a derivative thereof is introduced in the impregnation or/and pretreatment stage. The derivative may be mother liquor originating from crystallization of carbonate from green liquor. The procedure facilitates the use of mild conditions in the final cooking stage and short cooking periods and results in higher pulp quality, high production output and good maintenance of the balance of chemicals in the mill. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI962260A FI105929B (en) | 1996-05-30 | 1996-05-30 | An improved batch process for the preparation of sulphate cellulose |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA973887B true ZA973887B (en) | 1998-02-25 |
Family
ID=8546116
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA9703887A ZA973887B (en) | 1996-05-30 | 1997-05-06 | Batch process for preparing improved kraft pulp. |
Country Status (16)
Country | Link |
---|---|
EP (1) | EP0810321B1 (en) |
JP (1) | JPH1053989A (en) |
CN (1) | CN1109160C (en) |
AT (1) | ATE202167T1 (en) |
AU (1) | AU721440B2 (en) |
BR (1) | BR9703156A (en) |
CA (1) | CA2203096C (en) |
DE (1) | DE69705160T2 (en) |
ES (1) | ES2159385T3 (en) |
FI (1) | FI105929B (en) |
ID (1) | ID18445A (en) |
NO (1) | NO972456L (en) |
NZ (1) | NZ314898A (en) |
PT (1) | PT810321E (en) |
RU (1) | RU2128259C1 (en) |
ZA (1) | ZA973887B (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6103057A (en) * | 1997-06-11 | 2000-08-15 | Fagerlund; Bertil K. | Kraft digesting process wherein a vapor interface is formed by withdrawing hot cooking liquor |
FI120361B (en) * | 2003-12-31 | 2009-09-30 | Gl & V Finance Hungary Kft | Batch cooking process for the production of kraft pulp |
CA2651483C (en) * | 2006-05-19 | 2013-06-18 | Raymond Francis | Methods for carbonate pretreatment and pulping of cellulosic material |
SE531632C2 (en) * | 2007-12-20 | 2009-06-09 | Metso Fiber Karlstad Ab | Process of manufacture of sulphate pulp in which hemicelluloses are recycled |
KR20110123184A (en) | 2010-05-06 | 2011-11-14 | 바히아 스페셜티 셀룰로스 에스에이 | Method and system for high alpha dissolving pulp production |
CA2744250C (en) * | 2010-05-04 | 2016-10-11 | Bahia Specialty Cellulose Sa | Method and system for pulp processing using cold caustic extraction with alkaline filtrate reuse |
RU2535804C2 (en) * | 2010-05-04 | 2014-12-20 | Байа Спешалти Сельюлоз Са | Method and system of producing soluble cellulose mass with high content of alpha-cellulose |
AU2010202496B2 (en) * | 2010-05-04 | 2015-04-16 | Bahia Specialty Cellulose Sa | Method and system for high alpha dissolving pulp production |
EP2592186A1 (en) * | 2011-11-08 | 2013-05-15 | Södra Cell AB | Kraft pulping process |
CN104452389B (en) * | 2014-11-04 | 2017-02-15 | 中国轻工业南宁设计工程有限公司 | Energy-saving pulping cooking sequence interlock control system |
CN104988781B (en) * | 2015-08-11 | 2017-01-18 | 湛江晨鸣浆纸有限公司 | Wood chip pulping process |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55103386A (en) * | 1979-01-29 | 1980-08-07 | Sanyo Kokusaku Pulp Co | Two stage sulphate digesting method |
FI92224C (en) * | 1991-06-28 | 1994-10-10 | Sunds Defibrator Rauma Oy | Batch process for the production of cogeneration |
GB9117936D0 (en) * | 1991-08-20 | 1991-10-09 | Canada Inc | Production of sodium hydroxide |
SE500748C2 (en) * | 1992-10-12 | 1994-08-22 | Bertil Pettersson | Chemical recycling process in a sulphate pulp mill for the production of a high-sulfide white liquor and a low-sulfide white liquor |
FI95608B (en) * | 1994-06-17 | 1995-11-15 | Ahlstroem Oy | Process for preparing coke liquor by crystallization of green liquor |
US5674359A (en) * | 1995-02-08 | 1997-10-07 | Ahlstrom Machinery Inc. | Continuous cooking of cellulosic fibrous material with cold alkali impregnation |
-
1996
- 1996-05-30 FI FI962260A patent/FI105929B/en not_active IP Right Cessation
-
1997
- 1997-04-16 ES ES97660041T patent/ES2159385T3/en not_active Expired - Lifetime
- 1997-04-16 EP EP97660041A patent/EP0810321B1/en not_active Expired - Lifetime
- 1997-04-16 DE DE69705160T patent/DE69705160T2/en not_active Expired - Fee Related
- 1997-04-16 AT AT97660041T patent/ATE202167T1/en active
- 1997-04-16 PT PT97660041T patent/PT810321E/en unknown
- 1997-04-18 CA CA002203096A patent/CA2203096C/en not_active Expired - Lifetime
- 1997-05-06 ZA ZA9703887A patent/ZA973887B/en unknown
- 1997-05-09 AU AU20162/97A patent/AU721440B2/en not_active Ceased
- 1997-05-14 BR BR9703156A patent/BR9703156A/en not_active IP Right Cessation
- 1997-05-21 ID IDP971703A patent/ID18445A/en unknown
- 1997-05-26 NZ NZ314898A patent/NZ314898A/en unknown
- 1997-05-29 RU RU97108781A patent/RU2128259C1/en not_active IP Right Cessation
- 1997-05-29 NO NO972456A patent/NO972456L/en not_active Application Discontinuation
- 1997-05-29 CN CN97113050A patent/CN1109160C/en not_active Expired - Fee Related
- 1997-05-30 JP JP9158156A patent/JPH1053989A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE69705160D1 (en) | 2001-07-19 |
RU2128259C1 (en) | 1999-03-27 |
JPH1053989A (en) | 1998-02-24 |
FI962260A (en) | 1997-12-01 |
ATE202167T1 (en) | 2001-06-15 |
ID18445A (en) | 1998-04-09 |
NO972456L (en) | 1997-12-01 |
FI962260A0 (en) | 1996-05-30 |
FI105929B (en) | 2000-10-31 |
AU721440B2 (en) | 2000-07-06 |
DE69705160T2 (en) | 2002-05-16 |
NZ314898A (en) | 1998-06-26 |
CN1109160C (en) | 2003-05-21 |
AU2016297A (en) | 1997-12-04 |
EP0810321A1 (en) | 1997-12-03 |
CN1170795A (en) | 1998-01-21 |
NO972456D0 (en) | 1997-05-29 |
ES2159385T3 (en) | 2001-10-01 |
BR9703156A (en) | 1998-10-27 |
EP0810321B1 (en) | 2001-06-13 |
CA2203096C (en) | 2005-06-28 |
PT810321E (en) | 2001-10-31 |
CA2203096A1 (en) | 1997-11-30 |
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