SE9502419L - Framställning av polysulfid genom oxidation av sulfidanrikad grönlut - Google Patents

Framställning av polysulfid genom oxidation av sulfidanrikad grönlut

Info

Publication number
SE9502419L
SE9502419L SE9502419A SE9502419A SE9502419L SE 9502419 L SE9502419 L SE 9502419L SE 9502419 A SE9502419 A SE 9502419A SE 9502419 A SE9502419 A SE 9502419A SE 9502419 L SE9502419 L SE 9502419L
Authority
SE
Sweden
Prior art keywords
polysulfide
sulfide
oxidation
preparation
green liquor
Prior art date
Application number
SE9502419A
Other languages
English (en)
Swedish (sv)
Other versions
SE507033C2 (sv
SE9502419D0 (sv
Inventor
Martin Wimby
Olle Wennberg
Original Assignee
Kvaerner Pulping Tech
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 Kvaerner Pulping Tech filed Critical Kvaerner Pulping Tech
Priority to SE9502419A priority Critical patent/SE507033C2/sv
Publication of SE9502419D0 publication Critical patent/SE9502419D0/xx
Priority to PCT/SE1996/000832 priority patent/WO1997002383A1/en
Priority to CA002230572A priority patent/CA2230572A1/en
Publication of SE9502419L publication Critical patent/SE9502419L/
Priority to US09/010,504 priority patent/US5993601A/en
Publication of SE507033C2 publication Critical patent/SE507033C2/sv

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
    • D21C11/0064—Aspects concerning the production and the treatment of green and white liquors, e.g. causticizing green liquor
    • 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
    • D21C11/0057—Oxidation of liquors, e.g. in order to reduce the losses of sulfur compounds, followed by evaporation or combustion if the liquor in question is a black liquor
    • 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
    • D21C11/0085—Introduction of auxiliary substances into the regenerating system in order to improve the performance of certain steps of the latter, the presence of these substances being confined to the regeneration cycle

Landscapes

  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
SE9502419A 1995-07-04 1995-07-04 Framställning av polysulfid genom oxidation av sulfid i grönlut SE507033C2 (sv)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE9502419A SE507033C2 (sv) 1995-07-04 1995-07-04 Framställning av polysulfid genom oxidation av sulfid i grönlut
PCT/SE1996/000832 WO1997002383A1 (en) 1995-07-04 1996-06-24 Process for producing polysulphide by means of oxidizing sulphide in spent liquors from kraft cellulose cooking
CA002230572A CA2230572A1 (en) 1995-07-04 1996-06-24 Process for producing polysulphide by means of oxidizing sulphide in spent liquors from kraft cellulose cooking
US09/010,504 US5993601A (en) 1995-07-04 1998-01-21 Process for producing polysulphide by means of oxidizing sulphide in spent liquors from kraft cellulose cooking

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9502419A SE507033C2 (sv) 1995-07-04 1995-07-04 Framställning av polysulfid genom oxidation av sulfid i grönlut

Publications (3)

Publication Number Publication Date
SE9502419D0 SE9502419D0 (sv) 1995-07-04
SE9502419L true SE9502419L (sv) 1997-01-05
SE507033C2 SE507033C2 (sv) 1998-03-16

Family

ID=20398841

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9502419A SE507033C2 (sv) 1995-07-04 1995-07-04 Framställning av polysulfid genom oxidation av sulfid i grönlut

Country Status (4)

Country Link
US (1) US5993601A ( )
CA (1) CA2230572A1 ( )
SE (1) SE507033C2 ( )
WO (1) WO1997002383A1 ( )

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2592186A1 (en) * 2011-11-08 2013-05-15 Södra Cell AB Kraft pulping process
FI128221B (fi) 2015-04-27 2019-12-31 Metsae Fibre Oy Menetelmä polysulfidilipeän valmistamiseen käytetyn katalyytin regeneroimiseksi

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1112081A1 (ru) * 1983-05-30 1984-09-07 Всесоюзное Ордена Трудового Красного Знамени Научно-Производственное Объединение Целлюлозно-Бумажной Промышленности Способ приготовлени щелочного варочного раствора дл изготовлени полисульфидной целлюлозы
US5082526A (en) * 1989-01-23 1992-01-21 Pulp And Paper Research Institute Of Canada Process of producing kraft pulping liquor by the oxidation of white liquor in the presence of lime mud
SE500748C2 (sv) * 1992-10-12 1994-08-22 Bertil Pettersson Förfarande vid kemikalieåtervinning i en sulfatmassafabrik för framställning av dels en vitlut med hög sulfiditet och dels en sulfidfattig vitlut
FI98538C (fi) * 1993-10-20 1997-07-10 Enso Gutzeit Oy Menetelmä natriumhydroksidin valmistamiseksi valkolipeästä

Also Published As

Publication number Publication date
WO1997002383A1 (en) 1997-01-23
SE507033C2 (sv) 1998-03-16
SE9502419D0 (sv) 1995-07-04
US5993601A (en) 1999-11-30
CA2230572A1 (en) 1997-01-23

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Legal Events

Date Code Title Description
CANC Patent cancelled, revoked after opposition
NUG Patent has lapsed