NO924903L - PROCEDURES FOR MASS ALCOHOL ADDITION FOR HIGH CONSISTENCY OXYGEN ELIGIBILITY - Google Patents

PROCEDURES FOR MASS ALCOHOL ADDITION FOR HIGH CONSISTENCY OXYGEN ELIGIBILITY

Info

Publication number
NO924903L
NO924903L NO92924903A NO924903A NO924903L NO 924903 L NO924903 L NO 924903L NO 92924903 A NO92924903 A NO 92924903A NO 924903 A NO924903 A NO 924903A NO 924903 L NO924903 L NO 924903L
Authority
NO
Norway
Prior art keywords
pulp
eligibility
procedures
high consistency
alcohol addition
Prior art date
Application number
NO92924903A
Other languages
Norwegian (no)
Other versions
NO924903D0 (en
Inventor
Bruce F Griggs
Original Assignee
Union Camp Patent Holding
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 PCT/US1991/002673 external-priority patent/WO1992018689A1/en
Application filed by Union Camp Patent Holding filed Critical Union Camp Patent Holding
Publication of NO924903D0 publication Critical patent/NO924903D0/en
Publication of NO924903L publication Critical patent/NO924903L/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
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes

Abstract

Ubleket masse (8) blandes med en vanndlg alkalisk løsning (10, 14A) mens den har lav konsistens for å fordele en første mengde av alkalisk materiale, hovedsaklig jevnt i massen. Konsistensen til massen blir deretter økt til mer enn ca. 18% (12) og den høykonsistente alkaliholdige massen blir deretter behandlet med oksygen (21) for å frembringe delignlfi- i sering (20). Den totale mengden av alkalisk materiale i som tilsettes massen er mellom 0.8 og 7 masse-56 av den i ovnstørkede massen. Det dannes deretter massen med høy styrke og lavt llgnininnhold som ytterligere kan blekes til høy lyshet med reduserte mengder kjemikalier.Unbleached pulp (8) is mixed with an aqueous alkaline solution (10, 14A) while having a low consistency to disperse an initial amount of alkaline material, substantially uniformly in the pulp. The consistency of the pulp is then increased to more than approx. 18% (12) and the highly consistent alkali-containing mass are then treated with oxygen (21) to produce delignification (20). The total amount of alkaline material in which the pulp is added is between 0.8 and 7 pulp-56 of the pulp-dried pulp. The pulp is then formed with high strength and low coating content which can be further bleached to high brightness with reduced amounts of chemicals.

NO92924903A 1991-04-18 1992-12-17 PROCEDURES FOR MASS ALCOHOL ADDITION FOR HIGH CONSISTENCY OXYGEN ELIGIBILITY NO924903L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1991/002673 WO1992018689A1 (en) 1991-04-18 1991-04-18 Pulp alkali addition process for high consistency oxygen delignification

Publications (2)

Publication Number Publication Date
NO924903D0 NO924903D0 (en) 1992-12-17
NO924903L true NO924903L (en) 1992-12-17

Family

ID=22225462

Family Applications (1)

Application Number Title Priority Date Filing Date
NO92924903A NO924903L (en) 1991-04-18 1992-12-17 PROCEDURES FOR MASS ALCOHOL ADDITION FOR HIGH CONSISTENCY OXYGEN ELIGIBILITY

Country Status (5)

Country Link
KR (1) KR930701654A (en)
BR (1) BR9106680A (en)
FI (1) FI922323A (en)
NO (1) NO924903L (en)
RU (1) RU2071518C1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
UA117357C2 (en) 2012-11-09 2018-07-25 Дсм Айпі Асетс Б.В. Process for enzymatic hydrolysis of lignocellulosic material and fermentation of sugars
MX366745B (en) 2012-11-09 2019-07-23 Dsm Ip Assets Bv Process for enzymatic hydrolysis of lignocellulosic material and fermentation of sugars.
AU2015254649B2 (en) 2014-04-30 2018-11-01 Versalis S.P.A. Process for enzymatic hydrolysis of lignocellulosic material and fermentation of sugars

Also Published As

Publication number Publication date
FI922323A (en) 1992-10-19
NO924903D0 (en) 1992-12-17
BR9106680A (en) 1993-06-22
RU2071518C1 (en) 1997-01-10
FI922323A0 (en) 1992-05-21
KR930701654A (en) 1993-06-12

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