FI77062B - FOERFARANDE FOER CIRKULERING AV FENOL VID EN FENOLKOKNINGSPROCESS AV LIGNOCELLULOSAMATERIAL. - Google Patents
FOERFARANDE FOER CIRKULERING AV FENOL VID EN FENOLKOKNINGSPROCESS AV LIGNOCELLULOSAMATERIAL.Info
- Publication number
- FI77062B FI77062B FI865360A FI865360A FI77062B FI 77062 B FI77062 B FI 77062B FI 865360 A FI865360 A FI 865360A FI 865360 A FI865360 A FI 865360A FI 77062 B FI77062 B FI 77062B
- Authority
- FI
- Finland
- Prior art keywords
- phenol
- lignocellulosamaterial
- fenolkokningsprocess
- cirkulering
- fenol
- 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
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
Landscapes
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Compounds Of Unknown Constitution (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Pens And Brushes (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Paper (AREA)
- Medicines Containing Plant Substances (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
A process for recirculating phenol in a lignocellulosic materials digestion process in which lignocellulosic material is digested with phenol-containing solutions in order to dissolve lignin, characterised in that phenol recirculation is carried out as a cyclic process in which the phenol-containing solution is first used in the washing of the cellulosic material from the phenol digeston, thereafter in the lignocellulosic material digestion step, and finally in a lignocellulosic material impregnation step preceding the phenol digestion process.
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI865360A FI77062C (en) | 1986-12-31 | 1986-12-31 | Process for circulating phenol in a phenolic boiling process of lig nocellulose material |
ZA879483A ZA879483B (en) | 1986-12-31 | 1987-12-17 | Procedure for recirculating phenol in a lignocellulosic materials digestion process |
NO875428A NO163747C (en) | 1986-12-31 | 1987-12-23 | PROCEDURE FOR THE RECYCLING OF PHENOL IN A COOKING PROCESS FOR LIGNOCELLULOUS CONTAINING MATERIALS. |
EP87311493A EP0273759B1 (en) | 1986-12-31 | 1987-12-29 | Procedure for recirculating phenol in a lignocellulosic materials digestion process |
JP62336802A JPS63175188A (en) | 1986-12-31 | 1987-12-29 | Recirculation of phenol in liqunocellulose substance digesting process |
DE8787311493T DE3772741D1 (en) | 1986-12-31 | 1987-12-29 | METHOD FOR RECYCLING PHENOL IN A METHOD FOR DIGESTING LIGNOCELLULOSE MATERIALS. |
AT87311493T ATE66974T1 (en) | 1986-12-31 | 1987-12-29 | PROCESS FOR RECYCLING PHENOL IN A PROCESS FOR PUBLING LIGNOCELLULOUS MATERIALS. |
BR8707183A BR8707183A (en) | 1986-12-31 | 1987-12-30 | PROCESS FOR PHENOL RECIRCULATION IN A DIGESTING PROCESS OF LIGNOCELLULOSIC MATERIALS |
CA000555716A CA1281714C (en) | 1986-12-31 | 1987-12-31 | Procedure for recirculating phenol in a lignocellulosic materials digestion process |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI865360A FI77062C (en) | 1986-12-31 | 1986-12-31 | Process for circulating phenol in a phenolic boiling process of lig nocellulose material |
FI865360 | 1986-12-31 |
Publications (4)
Publication Number | Publication Date |
---|---|
FI865360A0 FI865360A0 (en) | 1986-12-31 |
FI865360A FI865360A (en) | 1988-07-01 |
FI77062B true FI77062B (en) | 1988-09-30 |
FI77062C FI77062C (en) | 1989-01-10 |
Family
ID=8523726
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI865360A FI77062C (en) | 1986-12-31 | 1986-12-31 | Process for circulating phenol in a phenolic boiling process of lig nocellulose material |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0273759B1 (en) |
JP (1) | JPS63175188A (en) |
AT (1) | ATE66974T1 (en) |
BR (1) | BR8707183A (en) |
CA (1) | CA1281714C (en) |
DE (1) | DE3772741D1 (en) |
FI (1) | FI77062C (en) |
NO (1) | NO163747C (en) |
ZA (1) | ZA879483B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19856582C1 (en) * | 1998-12-08 | 2001-03-15 | Rhodia Acetow Ag | Process for the production of chemical pulp from wood chips |
EP1273689A4 (en) | 2000-04-12 | 2004-08-18 | Yugen Kaisha Ichiryu | Decorative ribbon forming device, and decorative ribbon forming and mounting device |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1983002125A1 (en) * | 1981-12-10 | 1983-06-23 | Memorial Institute Battelle | A method for the delignification of wood and other ligno-cellulosic products |
-
1986
- 1986-12-31 FI FI865360A patent/FI77062C/en not_active IP Right Cessation
-
1987
- 1987-12-17 ZA ZA879483A patent/ZA879483B/en unknown
- 1987-12-23 NO NO875428A patent/NO163747C/en unknown
- 1987-12-29 JP JP62336802A patent/JPS63175188A/en active Pending
- 1987-12-29 AT AT87311493T patent/ATE66974T1/en active
- 1987-12-29 EP EP87311493A patent/EP0273759B1/en not_active Expired - Lifetime
- 1987-12-29 DE DE8787311493T patent/DE3772741D1/en not_active Expired - Fee Related
- 1987-12-30 BR BR8707183A patent/BR8707183A/en unknown
- 1987-12-31 CA CA000555716A patent/CA1281714C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
NO875428D0 (en) | 1987-12-23 |
NO163747B (en) | 1990-04-02 |
EP0273759A3 (en) | 1989-08-16 |
NO163747C (en) | 1990-07-11 |
CA1281714C (en) | 1991-03-19 |
FI865360A0 (en) | 1986-12-31 |
EP0273759A2 (en) | 1988-07-06 |
ZA879483B (en) | 1988-05-14 |
EP0273759B1 (en) | 1991-09-04 |
ATE66974T1 (en) | 1991-09-15 |
NO875428L (en) | 1988-07-01 |
DE3772741D1 (en) | 1991-10-10 |
FI865360A (en) | 1988-07-01 |
BR8707183A (en) | 1988-08-09 |
FI77062C (en) | 1989-01-10 |
JPS63175188A (en) | 1988-07-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Patent lapsed | ||
MM | Patent lapsed |
Owner name: NESTE OY |