NO924903L - Fremgangsmaate ved massealkalitilsetning for hoeykonsistensoksygendelignifisering - Google Patents

Fremgangsmaate ved massealkalitilsetning for hoeykonsistensoksygendelignifisering

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
English (en)
Other versions
NO924903D0 (no
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 NO924903L publication Critical patent/NO924903L/no
Publication of NO924903D0 publication Critical patent/NO924903D0/no

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)

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.
NO1992924903A 1991-04-18 1992-12-17 Fremgangsmaate ved massealkalitilsetning for hoeykonsistensoksygendelignifisering NO924903D0 (no)

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
NO924903L true NO924903L (no) 1992-12-17
NO924903D0 NO924903D0 (no) 1992-12-17

Family

ID=22225462

Family Applications (1)

Application Number Title Priority Date Filing Date
NO1992924903A NO924903D0 (no) 1991-04-18 1992-12-17 Fremgangsmaate ved massealkalitilsetning for hoeykonsistensoksygendelignifisering

Country Status (5)

Country Link
KR (1) KR930701654A (no)
BR (1) BR9106680A (no)
FI (1) FI922323A (no)
NO (1) NO924903D0 (no)
RU (1) RU2071518C1 (no)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3569712A1 (en) 2012-11-09 2019-11-20 DSM IP Assets B.V. Process for enzymatic hydrolysis of lignocellulosic material and fermentation of sugars
DK2917355T3 (da) 2012-11-09 2020-01-20 Dsm Ip Assets Bv Fremgangsmåde til enzymatisk hydrolyse af lignocellulosemateriale ved tilsætning af oxygen
KR20160145817A (ko) 2014-04-30 2016-12-20 디에스엠 아이피 어셋츠 비.브이. 리그노셀룰로스 물질을 효소적으로 가수분해하고 당을 발효시키는 방법
FI129846B (en) 2019-02-01 2022-09-30 Andritz Oy Method for producing oxidized lignin in kraft pulp mills

Also Published As

Publication number Publication date
FI922323A0 (fi) 1992-05-21
KR930701654A (ko) 1993-06-12
RU2071518C1 (ru) 1997-01-10
BR9106680A (pt) 1993-06-22
FI922323A (fi) 1992-10-19
NO924903D0 (no) 1992-12-17

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