FI921254A0 - Tillverkning av massa. - Google Patents
Tillverkning av massa.Info
- Publication number
- FI921254A0 FI921254A0 FI921254A FI921254A FI921254A0 FI 921254 A0 FI921254 A0 FI 921254A0 FI 921254 A FI921254 A FI 921254A FI 921254 A FI921254 A FI 921254A FI 921254 A0 FI921254 A0 FI 921254A0
- Authority
- FI
- Finland
- Prior art keywords
- pulp
- sulfide
- supply
- content
- cooking
- 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
- D21C3/022—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of S-containing compounds
-
- 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
- D21C3/26—Multistage processes
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Catalysts (AREA)
- Artificial Filaments (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB919111256A GB9111256D0 (en) | 1991-05-24 | 1991-05-24 | Pulping process |
US75684991A | 1991-09-10 | 1991-09-10 | |
US78815191A | 1991-11-05 | 1991-11-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
FI921254A0 true FI921254A0 (fi) | 1992-03-24 |
Family
ID=27265676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI921254A FI921254A0 (fi) | 1991-05-24 | 1992-03-24 | Tillverkning av massa. |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0517689B1 (fi) |
JP (1) | JPH05163690A (fi) |
AT (1) | ATE155540T1 (fi) |
DE (1) | DE69220853D1 (fi) |
FI (1) | FI921254A0 (fi) |
NO (1) | NO920692L (fi) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6132556A (en) * | 1993-05-04 | 2000-10-17 | Andritz-Ahlstrom Inc. | Method of controlling pulp digester pressure via liquor extraction |
US5575890A (en) * | 1993-05-04 | 1996-11-19 | Kamyr, Inc. | Method for selectively increasing the sulfide ion concentration and sulfidity of kraft cooking liquor during kraft cooking of wood |
FI102976B1 (fi) * | 1994-02-28 | 1999-03-31 | Valtion Teknillinen | Menetelmä lisäkeittokemikaalien tuottamiseen ja käyttämiseen sulfaattiprosessissa |
US5522958A (en) * | 1994-07-18 | 1996-06-04 | Pulp And Paper Research Institute Of Canada | Two-stage kraft cooking |
US5660686A (en) * | 1994-09-02 | 1997-08-26 | Ahlstrom Machinery Inc. | Cooking with spent liquor pretreatment of cellulose material |
AU2697295A (en) * | 1994-09-02 | 1996-03-27 | Kamyr Inc. | Continuous kraft cooking with black liquor pretreatment |
SE9703365D0 (sv) * | 1997-09-18 | 1997-09-18 | Kvaerner Pulping Tech | Method in connection with impregnation and digestion of lignocelulosic material |
AU3253400A (en) * | 1999-05-11 | 2000-11-30 | Air Products And Chemicals Inc. | Use of oxidized whiite liquor in a kraft mill digester |
US20070240837A1 (en) * | 2006-04-13 | 2007-10-18 | Andritz Inc. | Hardwood alkaline pulping processes and systems |
CA2681464C (en) * | 2007-01-15 | 2017-01-03 | Nihon Cellulose Co., Ltd. | Pulp production process |
CN102695671B (zh) * | 2010-01-05 | 2015-03-11 | 巴斯夫欧洲公司 | 用于极高温度的基于多硫化物的传热流体和蓄热流体 |
FI129362B (fi) * | 2017-05-16 | 2021-12-31 | Andritz Oy | Menetelmä kemiallisen massan tuottamiseksi |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI44743C (fi) * | 1962-09-15 | 1971-12-10 | Dominon Tar & Chemical | Syklinen menetelmä selluloosan valmistamiseksi |
US5053108A (en) * | 1989-06-28 | 1991-10-01 | Kamyr Ab | High sulfidity cook for paper pulp using black liquor sulfonization of steamed chips |
AU1765892A (en) * | 1991-02-06 | 1992-09-07 | A. Ahlstrom Corporation | A method of recovering energy and chemicals from black liquor |
-
1992
- 1992-02-21 NO NO92920692A patent/NO920692L/no unknown
- 1992-03-24 FI FI921254A patent/FI921254A0/fi unknown
- 1992-05-14 JP JP4122036A patent/JPH05163690A/ja not_active Withdrawn
- 1992-05-25 AT AT92890125T patent/ATE155540T1/de not_active IP Right Cessation
- 1992-05-25 DE DE69220853T patent/DE69220853D1/de not_active Expired - Lifetime
- 1992-05-25 EP EP92890125A patent/EP0517689B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69220853D1 (de) | 1997-08-21 |
JPH05163690A (ja) | 1993-06-29 |
NO920692D0 (no) | 1992-02-21 |
NO920692L (no) | 1992-11-25 |
EP0517689B1 (en) | 1997-07-16 |
EP0517689A1 (en) | 1992-12-09 |
ATE155540T1 (de) | 1997-08-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
GB | Transfer or assigment of application | ||
HC | Name/ company changed in application |