SE9700283L - Pulp making process - Google Patents
Pulp making processInfo
- Publication number
- SE9700283L SE9700283L SE9700283A SE9700283A SE9700283L SE 9700283 L SE9700283 L SE 9700283L SE 9700283 A SE9700283 A SE 9700283A SE 9700283 A SE9700283 A SE 9700283A SE 9700283 L SE9700283 L SE 9700283L
- Authority
- SE
- Sweden
- Prior art keywords
- alkaline
- making process
- pulp making
- aqueous
- cooking
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 238000010411 cooking Methods 0.000 abstract 3
- 239000007788 liquid Substances 0.000 abstract 2
- -1 sulphite compound Chemical class 0.000 abstract 2
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000003960 organic solvent Substances 0.000 abstract 1
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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/003—Pulping cellulose-containing materials with organic 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
- D21C3/02—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
- D21C3/20—Pulping cellulose-containing materials with organic solvents or in solvent environment
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Abstract
A method for producing pulp from material containing lignocellulose by cooking in an alkaline, aqueous cooking liquid which contains one or more organic solvents having a low boiling point and one or more redox catalysts is disclosed, the method being characterized in that the alkaline aqueous cooking liquid also contains (an) alkaline sulphite compound(s) and (an) alkaline sulphide compound(s) in aqueous solution.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0019696A AT404478B (en) | 1996-02-02 | 1996-02-02 | Cooking liquor containing low b.pt. solvents and quinone reducing catalysts - contains alkali sulphite(s) and sulphide(s) in aqueous solution |
Publications (2)
Publication Number | Publication Date |
---|---|
SE9700283D0 SE9700283D0 (en) | 1997-01-30 |
SE9700283L true SE9700283L (en) | 1997-08-03 |
Family
ID=3484037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9700283A SE9700283L (en) | 1996-02-02 | 1997-01-30 | Pulp making process |
Country Status (5)
Country | Link |
---|---|
AT (1) | AT404478B (en) |
BR (1) | BR9700837A (en) |
FI (1) | FI970419A (en) |
RU (1) | RU2135665C1 (en) |
SE (1) | SE9700283L (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103687990B (en) * | 2011-05-13 | 2016-03-30 | 维美德公司 | Manufacture the compact method of prehydrolyzed pulp |
US20140187759A1 (en) * | 2012-12-31 | 2014-07-03 | Api Intellectual Property Holdings, Llc | Biorefining processes and apparatus for separating cellulose hemicellulose, and lignin from biomass |
US20140366870A1 (en) * | 2012-12-31 | 2014-12-18 | Api Intellectual Property Holdings, Llc | Methods for recovering and recycling salt byproducts in biorefinery processes |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0211558A3 (en) * | 1985-07-26 | 1987-05-27 | Biodyne Chemicals, Inc. | Process for digesting lignocellulosic material |
GB8721528D0 (en) * | 1987-09-14 | 1987-10-21 | Shell Int Research | Pulping lignocellulose-containing material |
-
1996
- 1996-02-02 AT AT0019696A patent/AT404478B/en active
-
1997
- 1997-01-30 SE SE9700283A patent/SE9700283L/en not_active Application Discontinuation
- 1997-01-31 FI FI970419A patent/FI970419A/en unknown
- 1997-01-31 RU RU97101666A patent/RU2135665C1/en active
- 1997-01-31 BR BR9700837A patent/BR9700837A/en active Search and Examination
Also Published As
Publication number | Publication date |
---|---|
SE9700283D0 (en) | 1997-01-30 |
FI970419A0 (en) | 1997-01-31 |
RU2135665C1 (en) | 1999-08-27 |
ATA19696A (en) | 1998-04-15 |
BR9700837A (en) | 1998-12-08 |
AT404478B (en) | 1998-11-25 |
FI970419A (en) | 1997-08-03 |
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Legal Events
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---|---|---|---|
NAV | Patent application has lapsed |
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