SE7909674L - SET TO CHEMICALLY TRANSFER LIGNOCELLULOSA TO SEPARATED FIBERS - Google Patents

SET TO CHEMICALLY TRANSFER LIGNOCELLULOSA TO SEPARATED FIBERS

Info

Publication number
SE7909674L
SE7909674L SE7909674A SE7909674A SE7909674L SE 7909674 L SE7909674 L SE 7909674L SE 7909674 A SE7909674 A SE 7909674A SE 7909674 A SE7909674 A SE 7909674A SE 7909674 L SE7909674 L SE 7909674L
Authority
SE
Sweden
Prior art keywords
catalyst
minutes
tappi
viscosity
lignocellulosa
Prior art date
Application number
SE7909674A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE436899B (en
Inventor
L Poszner
P-C Chang
Original Assignee
Thermoform Bau Forschung
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CA316,951A external-priority patent/CA1131415A/en
Application filed by Thermoform Bau Forschung filed Critical Thermoform Bau Forschung
Publication of SE7909674L publication Critical patent/SE7909674L/en
Publication of SE436899B publication Critical patent/SE436899B/en

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

Lignocellulosic plant materials are treated with a catalyst containing an aqueous lower alcohol solution and converted into fibre possessing superior pulp characteristics. The preferred organic solvent is methanol and the catalyst is supplied in the form of an aqueous alcohol-soluble metal salt, with or without a minor quantity of strong mineral acid in a pressure vessel at temperatures between 130 to 210 DEG C, preferably between 190 DEG C to 200 DEG C for durations from 15 minutes to over one hour. The catalyst salt is a chloride, sulphate, or nitrate of calcium, magnesium or barium, and is used in concentrations between 0.005 to 1.0 molar. A pulp yield of 54 to 56% is easily obtained for a softwood having a Kappa number 35 and a TAPPI (0.5g) viscosity of 20 cP within 45 minutes of cooking whereas aspen can be cooked to a pulp yield of 62% with TAPPI viscosity 22 cP at a Kappa number 25 in less than 30 min.
SE7909674A 1978-11-27 1979-11-22 SET UP TO ENCOURAGE LIGNOCELLULOSALLY VEGETABLE MATERIAL SE436899B (en)

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
SE7909674L true SE7909674L (en) 1980-05-28
SE436899B SE436899B (en) 1985-01-28

Family

ID=25668832

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7909674A SE436899B (en) 1978-11-27 1979-11-22 SET UP TO ENCOURAGE LIGNOCELLULOSALLY VEGETABLE MATERIAL

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)

* Cited by examiner, † Cited by third party
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
JP5563447B2 (en) * 2007-06-20 2014-07-30 ナーガルジュナ エナジー プライベート リミテッド A one-step process for separating biomass components
KR20170038830A (en) * 2014-07-10 2017-04-07 리프 사이언시스 피티와이 리미티드 Methods for treating lignocellulosic material
AU2015286230B2 (en) 2014-07-10 2018-11-08 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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
YU41117B (en) * 1977-08-31 1986-12-31 Paszner Laszlo Process for obtaining sugovar, lingnig and cellulose from lignocellulose

Also Published As

Publication number Publication date
FI793678A (en) 1980-05-28
RO77556A (en) 1982-07-06
FI69129C (en) 1985-12-10
PH16526A (en) 1983-11-10
AU528703B2 (en) 1983-05-12
GB2040332A (en) 1980-08-28
PL131834B1 (en) 1985-01-31
AT372991B (en) 1983-12-12
FR2442297B1 (en) 1983-05-13
AR223198A1 (en) 1981-07-31
NO154274C (en) 1986-08-20
SE436899B (en) 1985-01-28
GB2040332B (en) 1983-09-07
NO154274B (en) 1986-05-12
FR2442297A1 (en) 1980-06-20
YU282279A (en) 1982-10-31
ES486267A1 (en) 1980-05-16
FI69129B (en) 1985-08-30
ATA726179A (en) 1983-04-15
NO793738L (en) 1980-05-28
DD147259A5 (en) 1981-03-25
BR7907651A (en) 1980-08-26
YU41897B (en) 1988-02-29
AU5305679A (en) 1981-06-04
PT70475A (en) 1979-12-01
PL219837A1 (en) 1980-12-15

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