SE8201369L - PROCEDURE FOR THE PREPARATION OF DISSOLVING MASS AND / OR PAPER MASS OF LIGNOCELLULOSAMATER EQUIPMENT FOR THE PERFORMANCE OF THIS PROCEDURE - Google Patents

PROCEDURE FOR THE PREPARATION OF DISSOLVING MASS AND / OR PAPER MASS OF LIGNOCELLULOSAMATER EQUIPMENT FOR THE PERFORMANCE OF THIS PROCEDURE

Info

Publication number
SE8201369L
SE8201369L SE8201369A SE8201369A SE8201369L SE 8201369 L SE8201369 L SE 8201369L SE 8201369 A SE8201369 A SE 8201369A SE 8201369 A SE8201369 A SE 8201369A SE 8201369 L SE8201369 L SE 8201369L
Authority
SE
Sweden
Prior art keywords
procedure
mass
lignocellulosamater
preparation
performance
Prior art date
Application number
SE8201369A
Other languages
Unknown language ( )
Swedish (sv)
Inventor
H Karwat
N Meindl
K Schwarzl
J Schmidt
Original Assignee
Linde Ag
Steyrermuehl Papier
Voest Alpine Ag
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 Linde Ag, Steyrermuehl Papier, Voest Alpine Ag filed Critical Linde Ag
Publication of SE8201369L publication Critical patent/SE8201369L/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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/12—Combustion of pulp liquors
    • D21C11/14—Wet combustion ; Treatment of pulp liquors without previous evaporation, by oxidation of the liquors remaining at least partially in the liquid phase, e.g. by application or pressure
    • 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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/04—Regeneration of pulp liquors or effluent waste waters of alkali lye
    • 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
    • D21C3/26—Multistage processes
    • D21C3/263—Multistage processes at least one stage being in presence of oxygen
    • 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

In a process for producing dissolving and/or papermaking pulp from lignocellulose material, the lignocellulose material is digested in at least two stages with an alkali-containing solution and an oxygen-containing gas. The digestion waste liquor is then further processed. To be able to save oxygen, more than 30% by weight of the lignocellulose material, based on its dry weight, is made to dissolve in the first stage. It is only in the second digestion stage that an oxygen-containing gas is added to the digestion solution.
SE8201369A 1981-03-10 1982-03-05 PROCEDURE FOR THE PREPARATION OF DISSOLVING MASS AND / OR PAPER MASS OF LIGNOCELLULOSAMATER EQUIPMENT FOR THE PERFORMANCE OF THIS PROCEDURE SE8201369L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813109098 DE3109098A1 (en) 1981-03-10 1981-03-10 Process for producing dissolving and/or papermaking pulp

Publications (1)

Publication Number Publication Date
SE8201369L true SE8201369L (en) 1982-09-11

Family

ID=6126827

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8201369A SE8201369L (en) 1981-03-10 1982-03-05 PROCEDURE FOR THE PREPARATION OF DISSOLVING MASS AND / OR PAPER MASS OF LIGNOCELLULOSAMATER EQUIPMENT FOR THE PERFORMANCE OF THIS PROCEDURE

Country Status (5)

Country Link
AT (1) AT375105B (en)
DE (1) DE3109098A1 (en)
FI (1) FI820610L (en)
FR (1) FR2501741A1 (en)
SE (1) SE8201369L (en)

Also Published As

Publication number Publication date
FR2501741B3 (en) 1984-02-03
ATA143081A (en) 1983-11-15
DE3109098A1 (en) 1982-12-30
FR2501741A1 (en) 1982-09-17
FI820610L (en) 1982-09-11
AT375105B (en) 1984-07-10

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