FI940826A - Process for continuous boiling of cellulose fiber material - Google Patents

Process for continuous boiling of cellulose fiber material Download PDF

Info

Publication number
FI940826A
FI940826A FI940826A FI940826A FI940826A FI 940826 A FI940826 A FI 940826A FI 940826 A FI940826 A FI 940826A FI 940826 A FI940826 A FI 940826A FI 940826 A FI940826 A FI 940826A
Authority
FI
Finland
Prior art keywords
liquid
impregnating
fibre material
withdrawn
fiber material
Prior art date
Application number
FI940826A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI940826A0 (en
Inventor
Aoke Backlund
Original Assignee
Kamyr 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 Kamyr Ab filed Critical Kamyr Ab
Publication of FI940826A publication Critical patent/FI940826A/en
Publication of FI940826A0 publication Critical patent/FI940826A0/en

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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
    • D21C3/24—Continuous 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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting

Landscapes

  • Paper (AREA)
  • Artificial Filaments (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

A process for the continuous digestion of cellulosic fiber material, comprising impregnation with impregnating liquid consisting of at least one fresh digesting liquor, in a closed impregnating system and subsequent digestion with digesting liquid in a closed digester system, said impregnating liquid being supplied through a supply system, together with steamed fibre material, to an inlet end of the impregnating system, liquid being withdrawn from the impregnating system at a point (46) located at a predetermined distance from said inlet end. According to the invention such a first quantity of liquid (F) is withdrawn at said withdrawal point (46) and recirculated directly to the supply system that a predetermined minimum ratio between liquid and fibre material is continuously maintained in the impregnating system prior to said withdrawal point (46), the liquid in said liquid to fibre material ratio being derived from original moisture (A) in the fibre material, condensates (B, C) from an initial steaming of the fibre material, and added fresh digesting liquor(s) (D and/or E) besides said withdrawn and recirculated quantity of liquid (F).
FI940826A 1991-08-23 1994-02-22 Process for continuous boiling of cellulose fiber material FI940826A0 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9102427A SE469078B (en) 1991-08-23 1991-08-23 SET FOR CONTINUOUS COOKING OF CELLULOSIC FIBER MATERIAL
PCT/SE1992/000546 WO1993004232A1 (en) 1991-08-23 1992-08-11 A process for the continuous digestion of cellulosic fiber material

Publications (2)

Publication Number Publication Date
FI940826A true FI940826A (en) 1994-02-22
FI940826A0 FI940826A0 (en) 1994-02-22

Family

ID=20383529

Family Applications (1)

Application Number Title Priority Date Filing Date
FI940826A FI940826A0 (en) 1991-08-23 1994-02-22 Process for continuous boiling of cellulose fiber material

Country Status (11)

Country Link
EP (1) EP0662169B1 (en)
JP (1) JPH06510091A (en)
AT (1) ATE145025T1 (en)
AU (1) AU2490392A (en)
CA (1) CA2115578A1 (en)
DE (1) DE69215110T2 (en)
FI (1) FI940826A0 (en)
ID (1) ID848B (en)
PT (1) PT100799A (en)
SE (1) SE469078B (en)
WO (1) WO1993004232A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5413677A (en) * 1993-04-05 1995-05-09 Kamyr, Inc. Method for producing chemical pulp from hardwood chips
SE506703C2 (en) 1995-07-12 1998-02-02 Kvaerner Pulping Tech Impregnation of fiber material in co-current during continuous boiling
US7297236B1 (en) 2001-06-30 2007-11-20 Icm, Inc. Ethanol distillation process
SE527058C2 (en) * 2004-02-09 2005-12-13 Kvaerner Pulping Tech Continuous cooking process with improved heat economy
SE0602675L (en) * 2006-12-13 2007-09-18 Metso Fiber Karlstad Ab Method for energy efficient production of cellulose pulp in a continuous cookery
US9644317B2 (en) 2014-11-26 2017-05-09 International Paper Company Continuous digester and feeding system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE359331B (en) * 1970-03-17 1973-08-27 Kamyr Ab
SE468053B (en) * 1988-12-20 1992-10-26 Kamyr Ab SET ON CONTINUOUS DISSOLUTION COOKING OF CELLULOSIC FIBER MATERIAL

Also Published As

Publication number Publication date
SE9102427D0 (en) 1991-08-23
FI940826A0 (en) 1994-02-22
PT100799A (en) 1994-05-31
DE69215110T2 (en) 1997-04-03
SE9102427L (en) 1993-02-24
ATE145025T1 (en) 1996-11-15
SE469078B (en) 1993-05-10
CA2115578A1 (en) 1993-03-04
EP0662169B1 (en) 1996-11-06
JPH06510091A (en) 1994-11-10
AU2490392A (en) 1993-03-16
WO1993004232A1 (en) 1993-03-04
EP0662169A1 (en) 1995-07-12
ID848B (en) 1996-08-01
DE69215110D1 (en) 1996-12-12

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Legal Events

Date Code Title Description
HC Name/ company changed in application

Owner name: KVAERNER PULPING TECHNOLOGIES AKTIEBOLAG

FD Application lapsed