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NO920691L - Behandling av organiske svovelgasser, spesielt i kraftmasse systemer og prosesser - Google Patents

Behandling av organiske svovelgasser, spesielt i kraftmasse systemer og prosesser

Info

Publication number
NO920691L
NO920691L NO92920691A NO920691A NO920691L NO 920691 L NO920691 L NO 920691L NO 92920691 A NO92920691 A NO 92920691A NO 920691 A NO920691 A NO 920691A NO 920691 L NO920691 L NO 920691L
Authority
NO
Norway
Prior art keywords
pulp
sulphide
feed
cooking
content
Prior art date
Application number
NO92920691A
Other languages
English (en)
Other versions
NO920691D0 (no
Inventor
Jian E Jiang
Joe R Phillips
Brian F Greenwood
Robert Prough
Kaj Henricson
Bertil C Stroemberg
Original Assignee
Kamyr Inc
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 Inc filed Critical Kamyr Inc
Publication of NO920691D0 publication Critical patent/NO920691D0/no
Publication of NO920691L publication Critical patent/NO920691L/no

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
    • D21C3/22—Other features of pulping processes
    • D21C3/26—Multistage 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
    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
    • D21C3/022—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of S-containing compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Gas Separation By Absorption (AREA)
  • Paper (AREA)
  • Industrial Gases (AREA)
  • Treating Waste Gases (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

Papirmasse (for eksempel kraftmasse eller sulfitmasse) blir fremstilt ved hjelp av minst to forskjellige tilførsler (35, 41) av kokelut (for eksempel hvitlut), som har forskjellige konsentrasjoner av lignin reaksjon forbedrende eller karbohydrat degraderingssenkende kjemikalier (for eksempel en som har lavt sulfidinnhold og den andre høyt sulfidinnhold). Tilførselen med det høye sulfidinnholdet blir vanligvis brukt for å impregnere massen (i 37), mens den andre tilførselen blir brukt i andre koketrinn (for eksempel kokeren 12), enten medstrøms eller motstrøms. Minst 60$ av sulfidet i kokekjemikaliene kan være inneholdt i den første tilførselen (35). Noe av sulfidet i den første tilførselen blir helst tilført i form av polysulfid eller elementært svovel. Når det blir benyttet ca 2$ polysulfid basert på trevekt blir utbyttet klart øket. Bruk av tilførsler med forskjellig kjemikalie (for eksempel sulfid) innhold gir et optimalt viskositets/- kappa-forhold og/eller styrkeegenskaper for den fremstilte masse.
NO92920691A 1991-09-10 1992-02-21 Behandling av organiske svovelgasser, spesielt i kraftmasse systemer og prosesser NO920691L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US75684991A 1991-09-10 1991-09-10

Publications (2)

Publication Number Publication Date
NO920691D0 NO920691D0 (no) 1992-02-21
NO920691L true NO920691L (no) 1993-03-11

Family

ID=25045319

Family Applications (1)

Application Number Title Priority Date Filing Date
NO92920691A NO920691L (no) 1991-09-10 1992-02-21 Behandling av organiske svovelgasser, spesielt i kraftmasse systemer og prosesser

Country Status (8)

Country Link
EP (1) EP0532491A1 (no)
JP (1) JPH05237344A (no)
AU (2) AU643117B2 (no)
BR (1) BR9201216A (no)
CA (1) CA2060819A1 (no)
FI (1) FI921516A (no)
NO (1) NO920691L (no)
ZA (1) ZA921042B (no)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5234546A (en) * 1991-09-10 1993-08-10 Kamyr, Inc. Polysulfide production in white liquor
US8940129B2 (en) 2010-12-30 2015-01-27 Uop Llc Process for reducing one or more insoluble solids in a black liquor
CN103608109A (zh) * 2011-06-14 2014-02-26 国际壳牌研究有限公司 含水催化剂硫化方法
US10870810B2 (en) 2017-07-20 2020-12-22 Proteum Energy, Llc Method and system for converting associated gas

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4067767A (en) * 1972-10-05 1978-01-10 Texaco Inc. Liquid phase coking of spent kraft pulping liquors
US4254094A (en) * 1979-03-19 1981-03-03 Air Products And Chemicals, Inc. Process for producing hydrogen from synthesis gas containing COS
US4839326A (en) * 1985-04-22 1989-06-13 Exxon Research And Engineering Company Promoted molybdenum and tungsten sulfide catalysts, their preparation and use
GB8803767D0 (en) * 1988-02-18 1988-03-16 Ici Plc Desulphurisation
WO1992013994A1 (en) * 1991-02-06 1992-08-20 A. Ahlstrom Corporation A method of recovering energy and chemicals from black liquor

Also Published As

Publication number Publication date
EP0532491A1 (en) 1993-03-17
AU5310194A (en) 1994-03-03
AU1091192A (en) 1993-03-11
ZA921042B (en) 1992-12-30
JPH05237344A (ja) 1993-09-17
BR9201216A (pt) 1993-04-13
NO920691D0 (no) 1992-02-21
FI921516A0 (fi) 1992-04-07
CA2060819A1 (en) 1993-03-11
FI921516A (fi) 1993-03-11
AU643117B2 (en) 1993-11-04

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