FR2436845A1 - Procede de preparation de pulpe de cellulose par delignification de matieres lignocellulosiques - Google Patents
Procede de preparation de pulpe de cellulose par delignification de matieres lignocellulosiquesInfo
- Publication number
- FR2436845A1 FR2436845A1 FR7923503A FR7923503A FR2436845A1 FR 2436845 A1 FR2436845 A1 FR 2436845A1 FR 7923503 A FR7923503 A FR 7923503A FR 7923503 A FR7923503 A FR 7923503A FR 2436845 A1 FR2436845 A1 FR 2436845A1
- Authority
- FR
- France
- Prior art keywords
- preoxidizing
- cellulose pulp
- digestion
- lignocellulosic materials
- lignocellulosic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/08—Pretreatment of the finely-divided materials before digesting with oxygen-generating compounds
Landscapes
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7809959A SE413785B (sv) | 1978-09-22 | 1978-09-22 | Forfarande for uppslutning av lignocellulosahaltiga material genom alkalisk kokning i nervaro av ett tillsatsemne av redoxtyp |
CA000384551A CA1162703A (en) | 1978-09-22 | 1981-08-25 | Process for the conversion of lignocellulosic material to cellulose pulp by alkaline preoxidation followed by alkaline oxygen-free digestion, both in the presence of a redox additive |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2436845A1 true FR2436845A1 (fr) | 1980-04-18 |
FR2436845B1 FR2436845B1 (US06653308-20031125-C00199.png) | 1983-01-28 |
Family
ID=25669415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7923503A Granted FR2436845A1 (fr) | 1978-09-22 | 1979-09-21 | Procede de preparation de pulpe de cellulose par delignification de matieres lignocellulosiques |
Country Status (8)
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4561936A (en) * | 1978-09-22 | 1985-12-31 | Mo Och Domsjo Aktiebolag | Process for the conversion of lignocellulosic material to cellulose pulp by alkaline preoxidation followed by alkaline oxygen-free digestion both in the presence of a redox additive |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57185032A (en) * | 1982-03-02 | 1982-11-15 | Canon Inc | X-ray photographing device |
AU5088885A (en) * | 1985-11-29 | 1987-06-04 | Gippsland Institute of Advanced Education, The | The production of hard compact carbonaceous material through water/acid/alkali treatment |
JPS6371454U (US06653308-20031125-C00199.png) * | 1986-10-29 | 1988-05-13 | ||
SE520956C2 (sv) * | 2001-12-05 | 2003-09-16 | Kvaerner Pulping Tech | Kontinuerlig kokning med extra uppehållstid för avdragen vätska utanför kokaren |
US7842161B2 (en) * | 2006-12-18 | 2010-11-30 | The University Of Maine System Board Of Trustees | Pre-extraction and solvent pulping of lignocellulosic material |
US7824521B2 (en) * | 2006-12-18 | 2010-11-02 | University Of Maine System Board Of Trustees | Process of treating a lignocellulosic material with hemicellulose pre-extraction and hemicellulose adsorption |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA986662A (en) * | 1973-05-01 | 1976-04-06 | David L. Mccandless | Pretreatment of lignocellulosic material with anthraquinone salts in alkaline pulping |
FR2304718A1 (fr) * | 1975-03-18 | 1976-10-15 | Ahlstroem Oy | Procede de delignification de materiaux contenant de la lignine |
FR2370121A1 (fr) * | 1976-11-03 | 1978-06-02 | Mo Och Domsjoe Ab | Procede de lessivage de matiere lignocellulosique |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE360128C (sv) * | 1970-08-25 | 1983-10-31 | Mo Och Domsjoe Ab | Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali |
US4089737A (en) * | 1974-02-18 | 1978-05-16 | Toyo Pulp Company, Ltd. | Delignification of cellulosic material with an alkaline aqueous medium containing oxygen dissolved therein |
US4091749A (en) * | 1975-01-02 | 1978-05-30 | Macmillan Bloedel Limited | Alkaline pulping of lignocellulosic material with amine pretreatment |
CA1073161A (en) * | 1975-09-05 | 1980-03-11 | Canadian Industries Limited | Delignification process |
US4127439A (en) * | 1977-01-28 | 1978-11-28 | Crown Zellerbach Corporation | Pretreatment of lignocellulose with anthraquinone prior to pulping |
US4134787A (en) * | 1978-05-26 | 1979-01-16 | International Paper Company | Delignification of lignocellulosic material with an alkaline liquor containing a cyclic amino compound |
SE413785B (sv) * | 1978-09-22 | 1980-06-23 | Mo Och Domsjoe Ab | Forfarande for uppslutning av lignocellulosahaltiga material genom alkalisk kokning i nervaro av ett tillsatsemne av redoxtyp |
-
1978
- 1978-09-22 SE SE7809959A patent/SE413785B/sv not_active IP Right Cessation
-
1979
- 1979-09-04 JP JP11406379A patent/JPS5545888A/ja active Granted
- 1979-09-04 AU AU50572/79A patent/AU529117B2/en not_active Ceased
- 1979-09-18 FI FI792898A patent/FI68679C/fi not_active IP Right Cessation
- 1979-09-20 BR BR7906010A patent/BR7906010A/pt unknown
- 1979-09-21 FR FR7923503A patent/FR2436845A1/fr active Granted
- 1979-09-24 CA CA336,240A patent/CA1129163A/en not_active Expired
-
1981
- 1981-08-24 US US06/295,923 patent/US4561936A/en not_active Expired - Fee Related
- 1981-08-25 CA CA000384551A patent/CA1162703A/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA986662A (en) * | 1973-05-01 | 1976-04-06 | David L. Mccandless | Pretreatment of lignocellulosic material with anthraquinone salts in alkaline pulping |
FR2304718A1 (fr) * | 1975-03-18 | 1976-10-15 | Ahlstroem Oy | Procede de delignification de materiaux contenant de la lignine |
FR2370121A1 (fr) * | 1976-11-03 | 1978-06-02 | Mo Och Domsjoe Ab | Procede de lessivage de matiere lignocellulosique |
Non-Patent Citations (2)
Title |
---|
EXBK/79 * |
EXBK/80 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4561936A (en) * | 1978-09-22 | 1985-12-31 | Mo Och Domsjo Aktiebolag | Process for the conversion of lignocellulosic material to cellulose pulp by alkaline preoxidation followed by alkaline oxygen-free digestion both in the presence of a redox additive |
Also Published As
Publication number | Publication date |
---|---|
CA1129163A (en) | 1982-08-10 |
JPS5545888A (en) | 1980-03-31 |
FI792898A (fi) | 1980-03-23 |
JPS6257756B2 (US06653308-20031125-C00199.png) | 1987-12-02 |
AU5057279A (en) | 1980-03-27 |
BR7906010A (pt) | 1980-06-03 |
FI68679B (fi) | 1985-06-28 |
CA1162703A (en) | 1984-02-28 |
FR2436845B1 (US06653308-20031125-C00199.png) | 1983-01-28 |
US4561936A (en) | 1985-12-31 |
AU529117B2 (en) | 1983-05-26 |
SE413785B (sv) | 1980-06-23 |
FI68679C (fi) | 1985-10-10 |
SE7809959L (sv) | 1980-03-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |