SE8703929L - PROCEDURE FOR DELIGNIFICATION AND WHEATING OF A LIGNOCELLULOSALLY MASS MATERIAL WITH ACID AND ALKALI - Google Patents

PROCEDURE FOR DELIGNIFICATION AND WHEATING OF A LIGNOCELLULOSALLY MASS MATERIAL WITH ACID AND ALKALI

Info

Publication number
SE8703929L
SE8703929L SE8703929A SE8703929A SE8703929L SE 8703929 L SE8703929 L SE 8703929L SE 8703929 A SE8703929 A SE 8703929A SE 8703929 A SE8703929 A SE 8703929A SE 8703929 L SE8703929 L SE 8703929L
Authority
SE
Sweden
Prior art keywords
wheating
lignocellulosally
delignification
alkali
procedure
Prior art date
Application number
SE8703929A
Other languages
Swedish (sv)
Other versions
SE8703929D0 (en
Inventor
E Saito
S Oka
O Matsumura
T Ueda
S Kondo
Original Assignee
Oji Paper Co
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 Oji Paper Co filed Critical Oji Paper Co
Publication of SE8703929D0 publication Critical patent/SE8703929D0/en
Publication of SE8703929L publication Critical patent/SE8703929L/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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
SE8703929A 1986-10-13 1987-10-12 PROCEDURE FOR DELIGNIFICATION AND WHEATING OF A LIGNOCELLULOSALLY MASS MATERIAL WITH ACID AND ALKALI SE8703929L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61241518A JPH0768675B2 (en) 1986-10-13 1986-10-13 Oxygen delignification and bleaching method for cellulose pulp

Publications (2)

Publication Number Publication Date
SE8703929D0 SE8703929D0 (en) 1987-10-12
SE8703929L true SE8703929L (en) 1988-04-14

Family

ID=17075535

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8703929A SE8703929L (en) 1986-10-13 1987-10-12 PROCEDURE FOR DELIGNIFICATION AND WHEATING OF A LIGNOCELLULOSALLY MASS MATERIAL WITH ACID AND ALKALI

Country Status (4)

Country Link
JP (1) JPH0768675B2 (en)
FI (1) FI874478A (en)
NO (1) NO874276L (en)
SE (1) SE8703929L (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5011572A (en) * 1989-05-19 1991-04-30 Fmc Corporation Two stage process for the oxygen delignification of lignocellulosic fibers with peroxide reinforcement in the first stage
AT404740B (en) 1989-10-30 1999-02-25 Chemiefaser Lenzing Ag Process for the chlorine-free bleaching of pulps
SE522593C2 (en) * 1999-07-06 2004-02-24 Kvaerner Pulping Tech Oxygen gas delignification system and method of pulp of lignocellulosic material
EP1813345A1 (en) * 2006-01-30 2007-08-01 Sulzer Pumpen Ag Method and apparatus for controlling the efficiency of mixing

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS539286A (en) * 1976-07-13 1978-01-27 Matsushita Electric Ind Co Ltd Production of catalyst body
US4363697A (en) * 1979-12-03 1982-12-14 The Black Clawson Company Method for medium consistency oxygen delignification of pulp

Also Published As

Publication number Publication date
NO874276D0 (en) 1987-10-13
SE8703929D0 (en) 1987-10-12
JPS6399389A (en) 1988-04-30
FI874478A (en) 1988-04-14
FI874478A0 (en) 1987-10-12
JPH0768675B2 (en) 1995-07-26
NO874276L (en) 1988-04-14

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