ES486267A1 - Un metodo mejorado de transformar quimicamente lignocelulosaen una forma de fibras separadas - Google Patents
Un metodo mejorado de transformar quimicamente lignocelulosaen una forma de fibras separadasInfo
- Publication number
- ES486267A1 ES486267A1 ES486267A ES486267A ES486267A1 ES 486267 A1 ES486267 A1 ES 486267A1 ES 486267 A ES486267 A ES 486267A ES 486267 A ES486267 A ES 486267A ES 486267 A1 ES486267 A1 ES 486267A1
- Authority
- ES
- Spain
- Prior art keywords
- catalyst
- minutes
- aqueous alcohol
- tappi
- viscosity
- 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.)
- Expired
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
Abstract
Un método mejorado de transformar químicamente lignocelulosa en una forma de fibras separadas, que comprende: cocer lignocelulosa con una mezcla disolvente acuosa de al menos cuatro veces el peso de la lignocelulosa, preferentemente en una relación de 1:5 a 1:10 con respecto a la relación madera: líquido, comprendiendo dicha mezcla de 1 a 4 volúmenes de un alcohol alifático inferior por volumen de agua, y un catalizador en una concentración entre 0,001 molar y 1, 0 molar, con o sin una pequeña cantidad de ácido mineral añadido, que preferiblemente, pero no necesariamente, tenga la misma especie de anión que el catalizador, estando la temperatura de cocción entre alrededor de 130ºC y 210ºC, preferiblemente entre 180ºC y 200ºC, y siendo el tiempo de cocción no superior a dos horas, y suficientemente para efectuar al menos la despolimerización parcial y la disolución de la lignina, las hemicelulosas y otras materiales de la pared celular que alojan a las fibras de celulosa, recuperar las fibras separadas del líquido residual, y recuperar los disolventes de cocción y de lavado, ligninas, y azúcares del líquido residual y agotado.
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 (de) | 1978-11-27 | 1979-05-22 | Lignocelluloseaufschlußverfahren mit einem Gemisch von Wasser und niedrig molekularem aliphatischem Alkohol und Metallsalz |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES486267A1 true ES486267A1 (es) | 1980-05-16 |
Family
ID=25668832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES486267A Expired ES486267A1 (es) | 1978-11-27 | 1979-11-23 | Un metodo mejorado de transformar quimicamente lignocelulosaen una forma de fibras separadas |
Country Status (16)
| Country | Link |
|---|---|
| AR (1) | AR223198A1 (es) |
| AT (1) | AT372991B (es) |
| AU (1) | AU528703B2 (es) |
| BR (1) | BR7907651A (es) |
| DD (1) | DD147259A5 (es) |
| ES (1) | ES486267A1 (es) |
| FI (1) | FI69129C (es) |
| FR (1) | FR2442297A1 (es) |
| GB (1) | GB2040332B (es) |
| NO (1) | NO154274C (es) |
| PH (1) | PH16526A (es) |
| PL (1) | PL131834B1 (es) |
| PT (1) | PT70475A (es) |
| RO (1) | RO77556A (es) |
| SE (1) | SE436899B (es) |
| YU (1) | YU41897B (es) |
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 |
| DK2173941T3 (da) * | 2007-06-20 | 2013-06-24 | Nagarjuna Energy Private Ltd | Fremgangsmåde med et trin til separation af biomassekomponenter |
| KR20170038830A (ko) * | 2014-07-10 | 2017-04-07 | 리프 사이언시스 피티와이 리미티드 | 리그노셀룰로오스 물질의 처리 방법 |
| AU2015286230B2 (en) | 2014-07-10 | 2018-11-08 | Leaf Sciences Pty Ltd | Methods for hydrolysing lignocellulosic material |
| CN114645479B (zh) * | 2020-12-19 | 2023-07-25 | 山东洲星天然物提取智能设备有限公司 | 一种纸浆的制备方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI782628A (fi) * | 1977-08-31 | 1979-03-01 | Laszlo Paszner | Organiska loesningsmedel utnyttjande delignifierings- och foersockringsfoerfarande foer lignocellulosahaltiga plantmaterial |
-
1979
- 1979-11-14 AT AT0726179A patent/AT372991B/de not_active IP Right Cessation
- 1979-11-19 NO NO793738A patent/NO154274C/no unknown
- 1979-11-19 YU YU2822/79A patent/YU41897B/xx unknown
- 1979-11-20 PT PT70475A patent/PT70475A/pt unknown
- 1979-11-21 AU AU53056/79A patent/AU528703B2/en not_active Ceased
- 1979-11-21 DD DD79217045A patent/DD147259A5/de not_active IP Right Cessation
- 1979-11-22 SE SE7909674A patent/SE436899B/sv not_active IP Right Cessation
- 1979-11-23 PL PL1979219837A patent/PL131834B1/pl unknown
- 1979-11-23 ES ES486267A patent/ES486267A1/es not_active Expired
- 1979-11-23 FI FI793678A patent/FI69129C/fi not_active IP Right Cessation
- 1979-11-24 RO RO7999349A patent/RO77556A/ro unknown
- 1979-11-26 PH PH23330A patent/PH16526A/en unknown
- 1979-11-26 FR FR7929082A patent/FR2442297A1/fr active Granted
- 1979-11-26 BR BR7907651A patent/BR7907651A/pt not_active IP Right Cessation
- 1979-11-27 GB GB7940923A patent/GB2040332B/en not_active Expired
- 1979-11-27 AR AR279044A patent/AR223198A1/es active
Also Published As
| Publication number | Publication date |
|---|---|
| FI69129B (fi) | 1985-08-30 |
| NO793738L (no) | 1980-05-28 |
| FR2442297B1 (es) | 1983-05-13 |
| PT70475A (en) | 1979-12-01 |
| NO154274C (no) | 1986-08-20 |
| DD147259A5 (de) | 1981-03-25 |
| RO77556A (ro) | 1982-07-06 |
| GB2040332A (en) | 1980-08-28 |
| ATA726179A (de) | 1983-04-15 |
| FR2442297A1 (fr) | 1980-06-20 |
| GB2040332B (en) | 1983-09-07 |
| SE7909674L (sv) | 1980-05-28 |
| YU41897B (en) | 1988-02-29 |
| FI793678A (fi) | 1980-05-28 |
| SE436899B (sv) | 1985-01-28 |
| PL219837A1 (es) | 1980-12-15 |
| AT372991B (de) | 1983-12-12 |
| BR7907651A (pt) | 1980-08-26 |
| PL131834B1 (en) | 1985-01-31 |
| AU528703B2 (en) | 1983-05-12 |
| AR223198A1 (es) | 1981-07-31 |
| FI69129C (fi) | 1985-12-10 |
| PH16526A (en) | 1983-11-10 |
| NO154274B (no) | 1986-05-12 |
| AU5305679A (en) | 1981-06-04 |
| YU282279A (en) | 1982-10-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 19990201 |