SE8902722L - METHOD FOR CONTROLING AN ALKALIC CELLULOS COOKING - Google Patents
METHOD FOR CONTROLING AN ALKALIC CELLULOS COOKINGInfo
- Publication number
- SE8902722L SE8902722L SE8902722A SE8902722A SE8902722L SE 8902722 L SE8902722 L SE 8902722L SE 8902722 A SE8902722 A SE 8902722A SE 8902722 A SE8902722 A SE 8902722A SE 8902722 L SE8902722 L SE 8902722L
- Authority
- SE
- Sweden
- Prior art keywords
- digestion
- alkalic
- cellulos
- controling
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/228—Automation of the pulping processes
Landscapes
- Paper (AREA)
Abstract
In the control of alkali (esp. sulphate and caustic soda) digestion of cellulosic material, the novelty is that the volatile acids, formed during lignin decompsn., are analysed and the time required to achieve the desired digestion level is determd. on the basis of the concn. ratio of the volatile acids reporting in the waste liquor. ADVANTAGE - The digestion process control is easily carried out and improved conformity with the desired digestion level is achieved.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI883818A FI80731C (en) | 1988-08-17 | 1988-08-17 | FOERFARANDE FOER STYRNING AV ALKALISK CELLULOSAKOK. |
Publications (2)
Publication Number | Publication Date |
---|---|
SE8902722D0 SE8902722D0 (en) | 1989-08-11 |
SE8902722L true SE8902722L (en) | 1990-02-18 |
Family
ID=8526931
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8902722A SE8902722L (en) | 1988-08-17 | 1989-08-11 | METHOD FOR CONTROLING AN ALKALIC CELLULOS COOKING |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPH0299679A (en) |
DE (1) | DE3927183A1 (en) |
FI (1) | FI80731C (en) |
SE (1) | SE8902722L (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI893830A (en) * | 1989-08-14 | 1991-02-15 | Kajaani Elektroniikka Oy | FOERFARANDE FOER STYRNING AV SYRGAS -ALKALI BLEKNING. |
ATE106477T1 (en) * | 1990-03-05 | 1994-06-15 | Siemens Ag | PROCESS FOR MAKING PULP IN A CONTINUOUS COOKER. |
-
1988
- 1988-08-17 FI FI883818A patent/FI80731C/en not_active IP Right Cessation
-
1989
- 1989-08-11 SE SE8902722A patent/SE8902722L/en not_active Application Discontinuation
- 1989-08-16 JP JP21024589A patent/JPH0299679A/en active Pending
- 1989-08-17 DE DE19893927183 patent/DE3927183A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
SE8902722D0 (en) | 1989-08-11 |
FI80731C (en) | 1990-07-10 |
FI80731B (en) | 1990-03-30 |
FI883818A0 (en) | 1988-08-17 |
JPH0299679A (en) | 1990-04-11 |
DE3927183A1 (en) | 1990-02-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
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