AU6233398A - Method and device for the continuous cooking of chemical pulp - Google Patents

Method and device for the continuous cooking of chemical pulp

Info

Publication number
AU6233398A
AU6233398A AU62333/98A AU6233398A AU6233398A AU 6233398 A AU6233398 A AU 6233398A AU 62333/98 A AU62333/98 A AU 62333/98A AU 6233398 A AU6233398 A AU 6233398A AU 6233398 A AU6233398 A AU 6233398A
Authority
AU
Australia
Prior art keywords
chips
liquid
digester
impregnation
cooking
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
AU62333/98A
Inventor
Vidar Snekkenes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metso Fiber Karlstad AB
Original Assignee
Kvaerner Pulping AB
Kvaerner Pulping Technologies 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
Priority claimed from SE9700435A external-priority patent/SE511850C2/en
Priority claimed from US08/908,285 external-priority patent/US6123807A/en
Priority claimed from US08/960,012 external-priority patent/US6159336A/en
Application filed by Kvaerner Pulping AB, Kvaerner Pulping Technologies AB filed Critical Kvaerner Pulping AB
Publication of AU6233398A publication Critical patent/AU6233398A/en
Abandoned legal-status Critical Current

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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • 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
    • D21C7/00—Digesters
    • D21C7/06—Feeding devices
    • 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
    • D21C7/00—Digesters
    • D21C7/14—Means for circulating the lye

Abstract

A method in connection with continuous cooking of chips, comprising impregnation of the chips with impregnation liquid in an impregnation vessel (3) and cooking of the impregnated chips in a digester (4), the impregnation vessel and the digester being connected to each other by means of a transfer circulation, which partly, via a feed line (25), feeds the chips from an outlet end (27) of the impregnation vessel to the top of the digester for separation of free liquid in a separator (28), and partly, via a return line (26), feeds separated liquid from the top of the digester to the outlet end of the impregnation vessel for use as transfer liquid for the impregnated chips, besides which cooking liquid is added to the chips in the top of the digester. According to the invention, as a first part, less than 100 %, preferably less than 95 % and more preferred less than 90 % of the liquid which is separated from the chips in the transfer circulation, is recirculated to be used as transfer liquid.
AU62333/98A 1997-02-10 1998-02-09 Method and device for the continuous cooking of chemical pulp Abandoned AU6233398A (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
SE9700435 1997-02-10
SE9700435A SE511850C2 (en) 1997-02-10 1997-02-10 Methods and plant for continuous cooking of fiber material
US08908285 1997-08-07
US08/908,285 US6123807A (en) 1997-02-18 1997-08-07 Method for the continuous cooking of pulp
US08/960,012 US6159336A (en) 1997-08-07 1997-10-29 Method and device for the continuous cooking of pulp
US08960012 1997-10-29
PCT/SE1998/000224 WO1998035092A1 (en) 1997-02-10 1998-02-09 Method and device for the continuous cooking of chemical pulp

Publications (1)

Publication Number Publication Date
AU6233398A true AU6233398A (en) 1998-08-26

Family

ID=27355857

Family Applications (1)

Application Number Title Priority Date Filing Date
AU62333/98A Abandoned AU6233398A (en) 1997-02-10 1998-02-09 Method and device for the continuous cooking of chemical pulp

Country Status (6)

Country Link
EP (1) EP0963480B1 (en)
AT (1) ATE333532T1 (en)
AU (1) AU6233398A (en)
CA (1) CA2277931C (en)
DE (1) DE69835277D1 (en)
WO (1) WO1998035092A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0602675L (en) * 2006-12-13 2007-09-18 Metso Fiber Karlstad Ab Method for energy efficient production of cellulose pulp in a continuous cookery
WO2012060749A1 (en) * 2010-11-03 2012-05-10 Metso Paper Sweden Ab Top separator for steam/liquid digester
CA2877500A1 (en) * 2012-06-28 2014-01-03 Shell Internationale Research Maatschappij B.V. Digestion units configured for high yield biomass processing

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE330819B (en) * 1966-09-12 1970-11-30 Kamyr Ab
FI82079C (en) * 1989-04-27 1993-05-11 Poeyry Jaakko & Co Oy Foerfarande och anordning Foer kontinuerlig kokning av Cellulosa
US5401361A (en) * 1992-08-19 1995-03-28 Kamyr, Inc. Completely coutercurrent cook continuous digester
US5413677A (en) * 1993-04-05 1995-05-09 Kamyr, Inc. Method for producing chemical pulp from hardwood chips
SE502134C2 (en) * 1994-02-10 1995-08-28 Kvaerner Pulping Tech Optimization of liquid / wood ratio in pre-impregnation vessels and continuous boiler in preparation of chemical pulp

Also Published As

Publication number Publication date
CA2277931C (en) 2006-11-07
WO1998035092A1 (en) 1998-08-13
ATE333532T1 (en) 2006-08-15
DE69835277D1 (en) 2006-08-31
CA2277931A1 (en) 1998-08-13
EP0963480A1 (en) 1999-12-15
EP0963480B1 (en) 2006-07-19

Similar Documents

Publication Publication Date Title
SE9700435D0 (en) Method of cooking fiber material
CA2321863A1 (en) Method and apparatus for feeding a chemical into a liquid flow
BR9607998A (en) Distribution of ac and rf signals for leads
GB2189413B (en) Separation of components of a fluid mixture
EP0343393A3 (en) Multiscreen pressure diffuser
MY113228A (en) Isolation of (meth) acrylic acid from a mixture containing (meth) acrylic acid as the main component and lower aldehydes as secondary components by rectification in a reftification column consisting of a stripping section and a rectification section
GB9902220D0 (en) Fluid processing
MD1858B2 (en) Membrane module for the membrane separators, utilization field and process for manufacture thereof
AU6233398A (en) Method and device for the continuous cooking of chemical pulp
CA2218670A1 (en) Method and apparatus for feeding multiple digesters
WO2003002246A1 (en) Device and method for optimising the circulation of a suspension in a plant comprising a three-phase reactor
AR017850A1 (en) DEVICE FOR THE REALIZATION OF HOMOGENE MIXTURES
PH31483A (en) Method and apparatus for pulping cellulosic material using a vessel with an impregnation zone and anattrition zone.
CA2248728A1 (en) Process for continuously guiding liquids when digesting pulp in a digester
AU2570397A (en) Method and apparatus for filling a pulp tower
AU2443700A (en) Method and apparatus for treating pulp
CA2205043A1 (en) Cellulose extraction process
CA2285714A1 (en) Continuous digester with inverted top separator
ES2003282A6 (en) Method for washing of alcaline pulp
CA2204054A1 (en) Froth separation apparatus
AU7826494A (en) Method and apparatus for dewatering of a fibre suspension
AU3943195A (en) Black liquor impregnation in single-vessel hydraulic digester
JPS6427112A (en) Low permittivity oil immersed insulating press board
ES2074023A1 (en) Oilseed meals enriched with sugars and protected from rumen attack, process for the preparation thereof, and applications.
EP1310296A3 (en) Parallel semicontinuous or continuous reactors with a feed pressurization station