SE7612248L - BOILING OF LIGNOCELLULOSE-MATERIALS - Google Patents

BOILING OF LIGNOCELLULOSE-MATERIALS

Info

Publication number
SE7612248L
SE7612248L SE7612248A SE7612248A SE7612248L SE 7612248 L SE7612248 L SE 7612248L SE 7612248 A SE7612248 A SE 7612248A SE 7612248 A SE7612248 A SE 7612248A SE 7612248 L SE7612248 L SE 7612248L
Authority
SE
Sweden
Prior art keywords
pulping
degree
lignocellulosic material
stage
defibration
Prior art date
Application number
SE7612248A
Other languages
Unknown language ( )
Swedish (sv)
Inventor
H O Samuelson
Original Assignee
Mo Och Domsjoe Ab
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
Application filed by Mo Och Domsjoe Ab filed Critical Mo Och Domsjoe Ab
Priority to SE7612248A priority Critical patent/SE7612248L/en
Priority to NZ185406A priority patent/NZ185406A/en
Priority to FI773115A priority patent/FI773115A/en
Priority to JP12665877A priority patent/JPS5358004A/en
Priority to BR7707297A priority patent/BR7707297A/en
Priority to CA289,976A priority patent/CA1096560A/en
Priority to NO773750A priority patent/NO773750L/en
Priority to FR7732940A priority patent/FR2370121A1/en
Publication of SE7612248L publication Critical patent/SE7612248L/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
    • D21C3/22—Other features of pulping processes
    • D21C3/26—Multistage processes
    • 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
    • D21C3/22—Other features of pulping processes
    • D21C3/222—Use of compounds accelerating the pulping processes

Landscapes

  • Paper (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

G16-214 PROCESS FOR THE PULPING OF LIGNOCELLULOSIC MATERIAL WITH ALKALI AND QUINONES OR HYDROQUINONES A process is provided for the alkaline pulping of lignocellulosic material with sodium hydroxide as the active alkali, which is capable of producing pulp in a yield and quality quite comparable with sulfate pulp. The process is a two stage process, without defibration between the two stages, and comprises subjecting lignocellulosic material such as wood to a first pulping stage at a temperature within the range from about 145.degree. to about 200.degree.C in a pulping liquor comprising sodium carbonate and/or sodium bicarbonate while removing carbon dioxide generated in the pulping stage, and then continuing the pulping without an intervening defibration at a temperature within the range from about 145.degree. to about 200.degree.C in a pulping liquor comprising sodium hydroxide and a quinone or hydroquinone compound.
SE7612248A 1976-11-03 1976-11-03 BOILING OF LIGNOCELLULOSE-MATERIALS SE7612248L (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
SE7612248A SE7612248L (en) 1976-11-03 1976-11-03 BOILING OF LIGNOCELLULOSE-MATERIALS
NZ185406A NZ185406A (en) 1976-11-03 1977-10-11 Two stage sulphur-free digestion of lignocellulose materials use of quinones or derivatives in second stage
FI773115A FI773115A (en) 1976-11-03 1977-10-20 KOKNING AV LIGNOCELLULOSAHALTIGA MATERIAL
JP12665877A JPS5358004A (en) 1976-11-03 1977-10-21 Process for digesting lignocellulose containing material
BR7707297A BR7707297A (en) 1976-11-03 1977-10-31 PROCESS FOR SULFUR-FREE DIGESTION OF LIGNOCELLULOSIC MATERIALS
CA289,976A CA1096560A (en) 1976-11-03 1977-11-01 Process for the pulping of lignocellulosic material with alkali and quinones or hydroquinones
NO773750A NO773750L (en) 1976-11-03 1977-11-02 PROCEDURE FOR COOKING LIGNOCELLULOSE-CONTAINING MATERIAL
FR7732940A FR2370121A1 (en) 1976-11-03 1977-11-02 LIGNOCELLULOSIC MATERIAL LESSIVING PROCESS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7612248A SE7612248L (en) 1976-11-03 1976-11-03 BOILING OF LIGNOCELLULOSE-MATERIALS

Publications (1)

Publication Number Publication Date
SE7612248L true SE7612248L (en) 1978-05-04

Family

ID=20329328

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7612248A SE7612248L (en) 1976-11-03 1976-11-03 BOILING OF LIGNOCELLULOSE-MATERIALS

Country Status (8)

Country Link
JP (1) JPS5358004A (en)
BR (1) BR7707297A (en)
CA (1) CA1096560A (en)
FI (1) FI773115A (en)
FR (1) FR2370121A1 (en)
NO (1) NO773750L (en)
NZ (1) NZ185406A (en)
SE (1) SE7612248L (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE413785B (en) * 1978-09-22 1980-06-23 Mo Och Domsjoe Ab PROCEDURE FOR CONTAINING LIGNOCELLULOSALLY MATERIALS BY ALKALK COOKING IN THE PRESENT OF AN ADDITIVE SUBSTANCE OF REDOX TYPE
DE3212767A1 (en) * 1982-04-06 1983-10-06 Nicolaus Md Verwaltungsges METHOD AND REACTOR FOR CONTINUOUSLY UNLOCKING PLANT FIBER MATERIAL
JPS6081400A (en) * 1983-10-11 1985-05-09 本州製紙株式会社 Packing material of metals
AU591509B2 (en) * 1985-08-05 1989-12-07 Interox Societe Anonyme Process for the delignification of cellulosic substances
BRPI0711473A2 (en) * 2006-05-19 2011-11-16 Univ New York State Res Found method of treating crushed cellulosic fibrous material, and pulp
US8303767B2 (en) 2008-03-18 2012-11-06 The Research Foundation Of State University Of New York Methods of pretreating comminuted cellulosic material with carbonate-containing solutions

Also Published As

Publication number Publication date
BR7707297A (en) 1978-08-08
FR2370121B1 (en) 1982-11-19
FR2370121A1 (en) 1978-06-02
JPS5358004A (en) 1978-05-25
NO773750L (en) 1978-05-05
CA1096560A (en) 1981-03-03
NZ185406A (en) 1980-10-08
FI773115A (en) 1978-05-04

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