FR2442297A1 - CHEMICAL TREATMENT PROCESS FOR LIGNOCELLULOSE TO TRANSFORM IT INTO SEPARATE FIBERS - Google Patents
CHEMICAL TREATMENT PROCESS FOR LIGNOCELLULOSE TO TRANSFORM IT INTO SEPARATE FIBERSInfo
- Publication number
- FR2442297A1 FR2442297A1 FR7929082A FR7929082A FR2442297A1 FR 2442297 A1 FR2442297 A1 FR 2442297A1 FR 7929082 A FR7929082 A FR 7929082A FR 7929082 A FR7929082 A FR 7929082A FR 2442297 A1 FR2442297 A1 FR 2442297A1
- Authority
- FR
- France
- Prior art keywords
- cooking
- lignocellulose
- transform
- fibers
- water
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/20—Pulping cellulose-containing materials with organic solvents or in solvent environment
Landscapes
- Paper (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
L'invention concerne un procédé de traitement chimique de lignocellulose pour la transformer en fibres séparées. Le procédé consiste à cuire une lignocellulose avec un mélange d'eau et d'un solvant (1 à 4 volumes d'alcool aliphatique inferieur par volume d'eau) en présence d'un catalyseur consistant en un sel métallique, la température de cuisson étant de préférence comprise entre 180 et 200 degrés C, pour une durée de cuisson ne dépassant pas deux heures, de manière à dépolymériser et dissoudre au moins partiellement la lignine, les hémicelluloses et les autres matières des parois cellulaires enveloppant les fibres de cellulose, à recueillir les fibres séparées et à récupérer les solvants de cuisson et de lavage, les lignines et les sucres du résidu de liqueur usée. Application à la production de pâtes à papier à partir d'especes végétales appartenant aux ordres tant des gymnospermes que des angiospermes.The invention relates to a method of chemically treating lignocellulose to transform it into separate fibers. The process consists in cooking a lignocellulose with a mixture of water and a solvent (1 to 4 volumes of lower aliphatic alcohol per volume of water) in the presence of a catalyst consisting of a metal salt, the cooking temperature preferably being between 180 and 200 degrees C, for a cooking time not exceeding two hours, so as to depolymerize and at least partially dissolve the lignin, hemicelluloses and other cell wall material enveloping the cellulose fibers, to collecting the separated fibers and recovering the cooking and washing solvents, lignins and sugars from the waste liquor residue. Application to the production of paper pulps from plant species belonging to the orders of both gymnosperms and angiosperms.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA316,951A CA1131415A (en) | 1978-11-27 | 1978-11-27 | Pulping of lignocellulose with aqueous methanol/ catalyst mixture |
| DE2920731A DE2920731C2 (en) | 1978-11-27 | 1979-05-22 | Lignocellulose digestion process with a mixture of water and low molecular weight aliphatic alcohol and metal salt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2442297A1 true FR2442297A1 (en) | 1980-06-20 |
| FR2442297B1 FR2442297B1 (en) | 1983-05-13 |
Family
ID=25668832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7929082A Granted FR2442297A1 (en) | 1978-11-27 | 1979-11-26 | CHEMICAL TREATMENT PROCESS FOR LIGNOCELLULOSE TO TRANSFORM IT INTO SEPARATE FIBERS |
Country Status (16)
| Country | Link |
|---|---|
| AR (1) | AR223198A1 (en) |
| AT (1) | AT372991B (en) |
| AU (1) | AU528703B2 (en) |
| BR (1) | BR7907651A (en) |
| DD (1) | DD147259A5 (en) |
| ES (1) | ES486267A1 (en) |
| FI (1) | FI69129C (en) |
| FR (1) | FR2442297A1 (en) |
| GB (1) | GB2040332B (en) |
| NO (1) | NO154274C (en) |
| PH (1) | PH16526A (en) |
| PL (1) | PL131834B1 (en) |
| PT (1) | PT70475A (en) |
| RO (1) | RO77556A (en) |
| SE (1) | SE436899B (en) |
| YU (1) | YU41897B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4594130A (en) * | 1978-11-27 | 1986-06-10 | Chang Pei Ching | Pulping of lignocellulose with aqueous alcohol and alkaline earth metal salt catalyst |
| CA1275286C (en) * | 1986-05-29 | 1990-10-16 | Edward A. Delong | Method for extracting the chemical components from dissociated lignocellulosic material |
| NZ579757A (en) * | 2007-06-20 | 2012-03-30 | Nagarjuna Energy Private Ltd | A single step process for separating biomass components |
| MX2017000276A (en) * | 2014-07-10 | 2017-04-27 | Leaf Sciences Pty Ltd | Methods for treating lignocellulosic material. |
| CA2953715A1 (en) | 2014-07-10 | 2016-01-14 | Leaf Sciences Pty Ltd | Methods for hydrolysing lignocellulosic material |
| CN114645479B (en) * | 2020-12-19 | 2023-07-25 | 山东洲星天然物提取智能设备有限公司 | Preparation method of paper pulp |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2402030A1 (en) * | 1977-08-31 | 1979-03-30 | Thermoform Bau Forschung | PROCESS AND DELIGNIFICATION AND SACCHARIFICATION OF LIGNOCELLULOSIC PLANT MATERIALS BY THE ACTION OF AN ORGANIC SOLVENT |
-
1979
- 1979-11-14 AT AT0726179A patent/AT372991B/en not_active IP Right Cessation
- 1979-11-19 NO NO793738A patent/NO154274C/en unknown
- 1979-11-19 YU YU2822/79A patent/YU41897B/en unknown
- 1979-11-20 PT PT70475A patent/PT70475A/en unknown
- 1979-11-21 AU AU53056/79A patent/AU528703B2/en not_active Ceased
- 1979-11-21 DD DD79217045A patent/DD147259A5/en not_active IP Right Cessation
- 1979-11-22 SE SE7909674A patent/SE436899B/en not_active IP Right Cessation
- 1979-11-23 PL PL1979219837A patent/PL131834B1/en unknown
- 1979-11-23 FI FI793678A patent/FI69129C/en not_active IP Right Cessation
- 1979-11-23 ES ES486267A patent/ES486267A1/en not_active Expired
- 1979-11-24 RO RO7999349A patent/RO77556A/en unknown
- 1979-11-26 FR FR7929082A patent/FR2442297A1/en active Granted
- 1979-11-26 BR BR7907651A patent/BR7907651A/en not_active IP Right Cessation
- 1979-11-26 PH PH23330A patent/PH16526A/en unknown
- 1979-11-27 AR AR279044A patent/AR223198A1/en active
- 1979-11-27 GB GB7940923A patent/GB2040332B/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2402030A1 (en) * | 1977-08-31 | 1979-03-30 | Thermoform Bau Forschung | PROCESS AND DELIGNIFICATION AND SACCHARIFICATION OF LIGNOCELLULOSIC PLANT MATERIALS BY THE ACTION OF AN ORGANIC SOLVENT |
Also Published As
| Publication number | Publication date |
|---|---|
| AU528703B2 (en) | 1983-05-12 |
| FI793678A (en) | 1980-05-28 |
| PT70475A (en) | 1979-12-01 |
| PL219837A1 (en) | 1980-12-15 |
| PH16526A (en) | 1983-11-10 |
| PL131834B1 (en) | 1985-01-31 |
| NO154274B (en) | 1986-05-12 |
| FI69129C (en) | 1985-12-10 |
| NO154274C (en) | 1986-08-20 |
| GB2040332A (en) | 1980-08-28 |
| FR2442297B1 (en) | 1983-05-13 |
| AU5305679A (en) | 1981-06-04 |
| GB2040332B (en) | 1983-09-07 |
| SE436899B (en) | 1985-01-28 |
| YU282279A (en) | 1982-10-31 |
| DD147259A5 (en) | 1981-03-25 |
| ES486267A1 (en) | 1980-05-16 |
| RO77556A (en) | 1982-07-06 |
| YU41897B (en) | 1988-02-29 |
| NO793738L (en) | 1980-05-28 |
| FI69129B (en) | 1985-08-30 |
| AT372991B (en) | 1983-12-12 |
| ATA726179A (en) | 1983-04-15 |
| AR223198A1 (en) | 1981-07-31 |
| BR7907651A (en) | 1980-08-26 |
| SE7909674L (en) | 1980-05-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |