NO920691L - TREATMENT OF ORGANIC SULFUR GASES, SPECIFICALLY IN POWER SYSTEMS AND PROCESSES - Google Patents

TREATMENT OF ORGANIC SULFUR GASES, SPECIFICALLY IN POWER SYSTEMS AND PROCESSES

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
Norwegian (no)
Other versions
NO920691D0 (en
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/en
Publication of NO920691L publication Critical patent/NO920691L/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
    • D21C3/22—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)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Industrial Gases (AREA)
  • Treating Waste Gases (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.Pulp (for example kraft pulp or sulphite pulp) is produced by using at least two different feeds (35, 41) of cooking liquor (for example white liquor), which have different concentrations of lignin reaction enhancer or carbohydrate degrading chemicals (for example one that has a low sulphide content and the other high sulfide content). The high sulphide feed is usually used to impregnate the pulp (in 37), while the other feed is used in second cooking stages (e.g. boiler 12), either downstream or countercurrent. At least $ 60 of the sulfide in the cooking chemicals may be contained in the initial feed (35). Some of the sulphide in the first feed is preferably fed in the form of polysulphide or elemental sulfur. When about $ 2 polysulfide based on wood weight is used, the yield is clearly increased. The use of feeds with different chemical (eg sulphide) content provides an optimal viscosity / kappa ratio and / or strength properties for the pulp produced.

NO92920691A 1991-09-10 1992-02-21 TREATMENT OF ORGANIC SULFUR GASES, SPECIFICALLY IN POWER SYSTEMS AND PROCESSES NO920691L (en)

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 (en) 1992-02-21
NO920691L true NO920691L (en) 1993-03-11

Family

ID=25045319

Family Applications (1)

Application Number Title Priority Date Filing Date
NO92920691A NO920691L (en) 1991-09-10 1992-02-21 TREATMENT OF ORGANIC SULFUR GASES, SPECIFICALLY IN POWER SYSTEMS AND PROCESSES

Country Status (8)

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

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
EP2720792A1 (en) * 2011-06-14 2014-04-23 Shell Internationale Research Maatschappij B.V. Aqueous catalyst sulfiding process
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
EP0738343B1 (en) * 1991-02-06 1999-09-29 Ahlstrom Machinery Oy A method of recovering energy and chemicals from black liquor

Also Published As

Publication number Publication date
FI921516A (en) 1993-03-11
AU643117B2 (en) 1993-11-04
EP0532491A1 (en) 1993-03-17
CA2060819A1 (en) 1993-03-11
JPH05237344A (en) 1993-09-17
NO920691D0 (en) 1992-02-21
AU1091192A (en) 1993-03-11
AU5310194A (en) 1994-03-03
BR9201216A (en) 1993-04-13
FI921516A0 (en) 1992-04-07
ZA921042B (en) 1992-12-30

Similar Documents

Publication Publication Date Title
FI87373B (en) Bleaching method and mixture
NO920692L (en) TREATMENT OF ORGANIC SULFUR GASES, SPECIFICALLY IN POWER SYSTEMS AND PROCESSES
DE69818961T2 (en) Process for the preparation of ammonium thiosulfate
NO920691L (en) TREATMENT OF ORGANIC SULFUR GASES, SPECIFICALLY IN POWER SYSTEMS AND PROCESSES
DE69013159T2 (en) METHOD FOR PRODUCING DIGESTIVE SOLUTIONS WITH HIGH SULFIDITY FOR COOKING SULFATE PULP.
US5534115A (en) Process for preserving the mechanical strength properties of chemical paper pulps
EP0617747B2 (en) A method of preparing digesting liquor
SE461991B (en) SET TO DELIGNIFY CHEMICAL MASS BY OXYGEN ALKALI TREATMENT
US4208245A (en) Pyrolysis of spent pulping liquors
US4002526A (en) Oxygen-alkali delignification of low consistency wood pulp
FI912806A0 (en) LIGNINPREPARAT OCH FOERFARANDE FOER DESS FRAMSTAELLNING.
US3723242A (en) Oxidation of sulfide pulping liquor to form polysulfide liquor in situ
US5328563A (en) Method of treating material containing sodium sulphate and/or sodium carbonate in a pulp mill
US2772240A (en) Method of treating residual liquors obtained in the manufacture of pulp by the sulphate cellulose process
Gullichsen Process internal measures to reduce pulp mill pollution load
US3720577A (en) Chlorine dioxide-peracetic acid-chlorine dioxide pulp bleaching sequence
US2938826A (en) Bleaching of cellulosic pulp
CA1174012A (en) Process for recovery of sulfur dioxide liberated in the chemical pulping of lignocellulosic material
US8152956B2 (en) Use of chemical pulp mill steam stripper off gases condensate as reducing agent in chlorine dioxide production
US5911853A (en) Method for treating paper mill condensate to reduce the amount of sulfur compounds therein
DE69837755T2 (en) Chemical process for wood delignification using ammonium magnesium bisulfite as active reagent
FI56713C (en) FOER FARING FLEAR SHEET AV LIGNIN AND CHEMICAL MASS OCH FLEER BLEKNING AV DENNA
NO130020B (en)
DE60314712T2 (en) Method for reducing NOX emissions in a chemical pulp mill
CA2069281A1 (en) Multi-level sulfide content pulping