BR8208011A - PROCESS FOR DESIGNIFICATION OF WOOD AND OTHER LIGNOCELLULOSIC PRODUCTS - Google Patents
PROCESS FOR DESIGNIFICATION OF WOOD AND OTHER LIGNOCELLULOSIC PRODUCTSInfo
- Publication number
- BR8208011A BR8208011A BR8208011A BR8208011A BR8208011A BR 8208011 A BR8208011 A BR 8208011A BR 8208011 A BR8208011 A BR 8208011A BR 8208011 A BR8208011 A BR 8208011A BR 8208011 A BR8208011 A BR 8208011A
- Authority
- BR
- Brazil
- Prior art keywords
- liquid
- phenols
- solid
- aqueous
- layer rich
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 239000002023 wood Substances 0.000 title 1
- 150000002989 phenols Chemical class 0.000 abstract 4
- 239000007788 liquid Substances 0.000 abstract 3
- 239000007787 solid Substances 0.000 abstract 3
- 239000010410 layer Substances 0.000 abstract 2
- 239000011260 aqueous acid Substances 0.000 abstract 1
- 229920002678 cellulose Polymers 0.000 abstract 1
- 239000001913 cellulose Substances 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 239000000470 constituent Substances 0.000 abstract 1
- 238000004821 distillation Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 229920005610 lignin Polymers 0.000 abstract 1
- 239000012978 lignocellulosic material Substances 0.000 abstract 1
- 239000007791 liquid phase Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000012044 organic layer Substances 0.000 abstract 1
- 150000002972 pentoses Chemical class 0.000 abstract 1
- 238000004537 pulping Methods 0.000 abstract 1
- 238000000197 pyrolysis Methods 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
Landscapes
- Compounds Of Unknown Constitution (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Paper (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Stringed Musical Instruments (AREA)
- Saccharide Compounds (AREA)
Abstract
A method for delignifying ligno-cellulosic materials and efficiently separate from each other the constituents thereof. Said materials which optionally may be prehydrolized are heated in an aqueous acid medium in the presence of phenol compounds whereby the ratio by weight of liquid to solid is at least 0,5. In the case of low liquid solid ratios i.e. below about 4:1 further aqueous liquid is added to the reaction mass after pulping to aid filtration and draining. After isolating the purified solid cellulose pulp, the liquid phase separates into two layers: an aqueous layer rich with pentoses and an organic layer rich with phenols and lignin, the latter providing, by distillation and pyrolysis of the residue, a quantity of phenols at least equal to that of the phenols used in the delignification stage.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US32936081A | 1981-12-10 | 1981-12-10 | |
| PCT/EP1982/000255 WO1983002125A1 (en) | 1981-12-10 | 1982-12-07 | A method for the delignification of wood and other ligno-cellulosic products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR8208011A true BR8208011A (en) | 1983-11-08 |
Family
ID=23285029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR8208011A BR8208011A (en) | 1981-12-10 | 1982-12-07 | PROCESS FOR DESIGNIFICATION OF WOOD AND OTHER LIGNOCELLULOSIC PRODUCTS |
Country Status (12)
| Country | Link |
|---|---|
| EP (2) | EP0097188A1 (en) |
| AT (1) | ATE16206T1 (en) |
| BE (1) | BE895299A (en) |
| BR (1) | BR8208011A (en) |
| CA (1) | CA1210209A (en) |
| CH (1) | CH653054A5 (en) |
| DE (1) | DE3267062D1 (en) |
| ES (1) | ES518003A0 (en) |
| FI (1) | FI70938C (en) |
| FR (1) | FR2518141B1 (en) |
| NO (1) | NO832783L (en) |
| WO (1) | WO1983002125A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI77062C (en) * | 1986-12-31 | 1989-01-10 | Neste Oy | FOERFARANDE FOER CIRKULERING AV FENOL VID EN FENOLKOKNINGSPROCESS AV LIGNOCELLULOSAMATERIAL. |
| FI77061C (en) * | 1986-12-31 | 1989-01-10 | Neste Oy | FOERFARANDE FOER SEPARERING AV LIGNIN OCH FENOL FRAON FENOLLOESNINGAR. |
| DE19856582C1 (en) * | 1998-12-08 | 2001-03-15 | Rhodia Acetow Ag | Process for the production of chemical pulp from wood chips |
| CN102186871B (en) * | 2008-10-23 | 2014-03-19 | 独立行政法人科学技术振兴机构 | Concentrated acid treatment part, concentrated acid treatment method, plant resource phase separation system conversion device and conversion method |
| CA3110389A1 (en) * | 2021-02-25 | 2022-08-25 | Sixring Inc. | Modified sulfuric acid and uses thereof |
| CN113307983B (en) * | 2021-05-21 | 2022-08-05 | 北京林业大学 | Method for separating lignin by green solvent quickly and in high yield |
| CN116770613A (en) * | 2023-08-01 | 2023-09-19 | 贵州大学 | Method for solvent and cellulose pretreatment and component separation of thermotropic liquid-liquid phase separation |
| CN119570060A (en) * | 2024-12-02 | 2025-03-07 | 齐鲁工业大学(山东省科学院) | A method for extracting light-colored phenolic lignin |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE457089A (en) * | 1943-02-27 | |||
| FR989191A (en) * | 1944-09-07 | 1951-09-05 | Traitement Chimique Des Vegeta | Process for treating fibrous materials, more particularly plants with a view to obtaining cellulose |
| US3215588A (en) * | 1963-08-15 | 1965-11-02 | Lummus Co | Continuous impregnation, cooking, and washing of fibrous material |
| AT336992B (en) * | 1975-02-18 | 1977-06-10 | Visch Khim T I Nis | PROCESS AND DEVICE FOR PRODUCING FIBER MATERIAL FROM PLANT RAW MATERIALS |
| DE3161585D1 (en) * | 1980-06-20 | 1984-01-12 | Battelle Memorial Institute | A method for the delignification of wood and other ligno-cellulosic products |
| DE3168397D1 (en) * | 1980-11-20 | 1985-02-28 | Simmering Graz Pauker Ag | Process and apparatus for producing cellulose |
-
1982
- 1982-12-07 BR BR8208011A patent/BR8208011A/en unknown
- 1982-12-07 CH CH7108/82A patent/CH653054A5/en not_active IP Right Cessation
- 1982-12-07 ES ES518003A patent/ES518003A0/en active Granted
- 1982-12-07 WO PCT/EP1982/000255 patent/WO1983002125A1/en not_active Ceased
- 1982-12-07 CA CA000417171A patent/CA1210209A/en not_active Expired
- 1982-12-07 EP EP83900024A patent/EP0097188A1/en not_active Withdrawn
- 1982-12-08 FR FR8220587A patent/FR2518141B1/en not_active Expired
- 1982-12-09 AT AT82810536T patent/ATE16206T1/en not_active IP Right Cessation
- 1982-12-09 EP EP82810536A patent/EP0082116B1/en not_active Expired
- 1982-12-09 BE BE0/209694A patent/BE895299A/en not_active IP Right Cessation
- 1982-12-09 DE DE8282810536T patent/DE3267062D1/en not_active Expired
- 1982-12-10 FI FI824244A patent/FI70938C/en not_active IP Right Cessation
-
1983
- 1983-08-01 NO NO832783A patent/NO832783L/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CA1210209A (en) | 1986-08-26 |
| CH653054A5 (en) | 1985-12-13 |
| FI824244A0 (en) | 1982-12-10 |
| WO1983002125A1 (en) | 1983-06-23 |
| FR2518141A1 (en) | 1983-06-17 |
| DE3267062D1 (en) | 1985-11-28 |
| FI70938B (en) | 1986-07-18 |
| NO832783L (en) | 1983-08-01 |
| FI70938C (en) | 1986-10-27 |
| EP0082116A1 (en) | 1983-06-22 |
| ES8404725A1 (en) | 1984-05-01 |
| EP0082116B1 (en) | 1985-10-23 |
| FR2518141B1 (en) | 1986-08-14 |
| FI824244L (en) | 1983-06-11 |
| EP0097188A1 (en) | 1984-01-04 |
| ATE16206T1 (en) | 1985-11-15 |
| ES518003A0 (en) | 1984-05-01 |
| BE895299A (en) | 1983-06-09 |
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