SE8405984L - PROCEDURE FOR SULFIT CELLULOSA PREPARATION - Google Patents

PROCEDURE FOR SULFIT CELLULOSA PREPARATION

Info

Publication number
SE8405984L
SE8405984L SE8405984A SE8405984A SE8405984L SE 8405984 L SE8405984 L SE 8405984L SE 8405984 A SE8405984 A SE 8405984A SE 8405984 A SE8405984 A SE 8405984A SE 8405984 L SE8405984 L SE 8405984L
Authority
SE
Sweden
Prior art keywords
solution
sulfit
cellulosa
procedure
preparation
Prior art date
Application number
SE8405984A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE8405984D0 (en
Inventor
P Molkentin-Matilainen
E Kaila
S Kuusela
S Hyverinen
E Sjostrom
Original Assignee
Serlachius Oy
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 Serlachius Oy filed Critical Serlachius Oy
Publication of SE8405984D0 publication Critical patent/SE8405984D0/en
Publication of SE8405984L publication Critical patent/SE8405984L/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
    • D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
    • D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites
    • 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

Landscapes

  • Paper (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Immobilizing And Processing Of Enzymes And Microorganisms (AREA)

Abstract

In a process for producing sulphite pulp, such a strong digesting solution is drawn into the chippings in the initial stage of digestion that more than 35% of the total quantity of liquid can be removed, but such a quantity of solution is left in the digester that the solution can circulate through a calorifier for indirectly raising the temperature of final digestion. Preferably, the digesting solution/wood weight ratio is reduced to a value of 2.4:1.
SE8405984A 1983-11-29 1984-11-27 PROCEDURE FOR SULFIT CELLULOSA PREPARATION SE8405984L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI834358A FI73012C (en) 1983-11-29 1983-11-29 Process for boiling sulfite cellulose.

Publications (2)

Publication Number Publication Date
SE8405984D0 SE8405984D0 (en) 1984-11-27
SE8405984L true SE8405984L (en) 1985-05-30

Family

ID=8518141

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8405984A SE8405984L (en) 1983-11-29 1984-11-27 PROCEDURE FOR SULFIT CELLULOSA PREPARATION

Country Status (8)

Country Link
JP (1) JPS60134088A (en)
DD (1) DD229446A5 (en)
DE (1) DE3440716A1 (en)
FI (1) FI73012C (en)
HU (1) HUT36873A (en)
NO (1) NO844740L (en)
PL (1) PL145660B1 (en)
SE (1) SE8405984L (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE62376C (en) * O. SCHMIDT in Berlin N., Weifsen-I burgerstr. 48 Process for the production of pulp
DE527950C (en) * 1928-12-30 1931-06-24 I G Farbenindustrie Akt Ges Process for the production of sulphite pulp

Also Published As

Publication number Publication date
FI834358A0 (en) 1983-11-29
FI834358A (en) 1985-05-30
SE8405984D0 (en) 1984-11-27
NO844740L (en) 1985-05-30
DD229446A5 (en) 1985-11-06
HUT36873A (en) 1985-10-28
FI73012C (en) 1987-08-10
DE3440716A1 (en) 1985-06-05
PL250632A1 (en) 1985-07-16
JPS60134088A (en) 1985-07-17
PL145660B1 (en) 1988-10-31
FI73012B (en) 1987-04-30

Similar Documents

Publication Publication Date Title
SE7902901L (en) OXYGEN LIGNIFIED BLOCK, CELLULOSIZED PULP WITH OZON
BR9007533A (en) PROCESS FOR THE MANUFACTURE OF TARGETED PULP AND TO DESIGNIFY AND TARGET A LIGNOSCELULOSIC MATERIAL
NO179918C (en) Process and apparatus for producing power mass
SE7608696L (en) WAY TO PRODUCE CELLULOSIS-CONTAINING MASSES IN HIGH YIELD AND AT LEGAL COST
SE8202665L (en) SET FOR PREPARATION OF SULPHATE Pulp
SE8304973L (en) PROCEDURE FOR THE PREPARATION OF COOKET LIQUID FOR POWER MASS COOKING
SE8406536D0 (en) PROCEDURE FOR PRODUCING CELLULOSA
GB283910A (en) Improved process for the extraction of cellulose or paper pulp from fibrous vegetable matter containing the same
ATE36565T1 (en) PEROXIDE BLEACHING PROCESS FOR CELLULOSIC MATERIAL.
ES345665A1 (en) Bleaching fluffed mechanical wood pulp with hydrogen peroxide
SE8405984L (en) PROCEDURE FOR SULFIT CELLULOSA PREPARATION
NO973596D0 (en) Method of making pulp
GB885605A (en) Improved method for the production of neutral sulfite pulp
FI882769A (en) STYRNING AV PEROXIDBLEKNING AV OLIKA TRAEMASSOR.
SE7510677L (en) PROCEDURE FOR THE PREPARATION OF CELLULOSA ACCORDING TO THE SULPHITE METHOD
CA2109513A1 (en) A method for the manufacture of chemithermomechanical pulp
SE8900260D0 (en) PROCEDURES FOR THE PREPARATION OF FLUFF Pulp
SE9203801D0 (en) MASS PREPARATION PROCEDURE WITH ALKALITE ADDITION FOR THICK MASS OXYGEN ELIGIBILITY
GB693490A (en) A method of producing porous fibre boards or plates
SE8106501L (en) PROCEDURE FOR THE PREPARATION OF CHEMICAL PAPER Pulp AND SALUNDA PREPARED Pulp
SE8702808L (en) PULSE COOKING WITH HIGH Yield
SE8800610D0 (en) PRODUCTION OF HIGH STRENGTH LINERBOARD WITH OXYGEN AND ALKALI
SE8306139D0 (en) PROCESS AND ALKALINE SULFITE-SULFIDE COOKING LIQUOR FOR THE PREPARATION OF PULP OUT OF LIGNIN-CONTAINING CELLULOSE RAW MATERIAL

Legal Events

Date Code Title Description
NAV Patent application has lapsed

Ref document number: 8405984-9

Effective date: 19881230