SE8201369L - PROCEDURE FOR THE PREPARATION OF DISSOLVING MASS AND / OR PAPER MASS OF LIGNOCELLULOSAMATER EQUIPMENT FOR THE PERFORMANCE OF THIS PROCEDURE - Google Patents
PROCEDURE FOR THE PREPARATION OF DISSOLVING MASS AND / OR PAPER MASS OF LIGNOCELLULOSAMATER EQUIPMENT FOR THE PERFORMANCE OF THIS PROCEDUREInfo
- Publication number
- SE8201369L SE8201369L SE8201369A SE8201369A SE8201369L SE 8201369 L SE8201369 L SE 8201369L SE 8201369 A SE8201369 A SE 8201369A SE 8201369 A SE8201369 A SE 8201369A SE 8201369 L SE8201369 L SE 8201369L
- Authority
- SE
- Sweden
- Prior art keywords
- procedure
- mass
- lignocellulosamater
- preparation
- performance
- 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
- D21C11/12—Combustion of pulp liquors
- D21C11/14—Wet combustion ; Treatment of pulp liquors without previous evaporation, by oxidation of the liquors remaining at least partially in the liquid phase, e.g. by application or pressure
-
- 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
- D21C11/04—Regeneration of pulp liquors or effluent waste waters of alkali lye
-
- 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
- D21C3/263—Multistage processes at least one stage being in presence of oxygen
-
- 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
- D21C7/14—Means for circulating the lye
Landscapes
- Paper (AREA)
Abstract
In a process for producing dissolving and/or papermaking pulp from lignocellulose material, the lignocellulose material is digested in at least two stages with an alkali-containing solution and an oxygen-containing gas. The digestion waste liquor is then further processed. To be able to save oxygen, more than 30% by weight of the lignocellulose material, based on its dry weight, is made to dissolve in the first stage. It is only in the second digestion stage that an oxygen-containing gas is added to the digestion solution.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19813109098 DE3109098A1 (en) | 1981-03-10 | 1981-03-10 | Process for producing dissolving and/or papermaking pulp |
Publications (1)
Publication Number | Publication Date |
---|---|
SE8201369L true SE8201369L (en) | 1982-09-11 |
Family
ID=6126827
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8201369A SE8201369L (en) | 1981-03-10 | 1982-03-05 | PROCEDURE FOR THE PREPARATION OF DISSOLVING MASS AND / OR PAPER MASS OF LIGNOCELLULOSAMATER EQUIPMENT FOR THE PERFORMANCE OF THIS PROCEDURE |
Country Status (5)
Country | Link |
---|---|
AT (1) | AT375105B (en) |
DE (1) | DE3109098A1 (en) |
FI (1) | FI820610L (en) |
FR (1) | FR2501741A1 (en) |
SE (1) | SE8201369L (en) |
-
1981
- 1981-03-10 DE DE19813109098 patent/DE3109098A1/en not_active Withdrawn
- 1981-03-27 AT AT143081A patent/AT375105B/en not_active IP Right Cessation
-
1982
- 1982-02-24 FI FI820610A patent/FI820610L/en not_active Application Discontinuation
- 1982-03-05 SE SE8201369A patent/SE8201369L/en not_active Application Discontinuation
- 1982-03-08 FR FR8203851A patent/FR2501741A1/en active Granted
Also Published As
Publication number | Publication date |
---|---|
FI820610L (en) | 1982-09-11 |
AT375105B (en) | 1984-07-10 |
DE3109098A1 (en) | 1982-12-30 |
ATA143081A (en) | 1983-11-15 |
FR2501741B3 (en) | 1984-02-03 |
FR2501741A1 (en) | 1982-09-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
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