NO920691L - TREATMENT OF ORGANIC SULFUR GASES, SPECIFICALLY IN POWER SYSTEMS AND PROCESSES - Google Patents
TREATMENT OF ORGANIC SULFUR GASES, SPECIFICALLY IN POWER SYSTEMS AND PROCESSESInfo
- 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
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.
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)
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)
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 |
-
1992
- 1992-02-07 CA CA002060819A patent/CA2060819A1/en not_active Abandoned
- 1992-02-10 EP EP19920890034 patent/EP0532491A1/en not_active Withdrawn
- 1992-02-13 AU AU10911/92A patent/AU643117B2/en not_active Ceased
- 1992-02-13 ZA ZA921042A patent/ZA921042B/en unknown
- 1992-02-21 NO NO92920691A patent/NO920691L/en unknown
- 1992-04-06 BR BR929201216A patent/BR9201216A/en not_active Application Discontinuation
- 1992-04-07 FI FI921516A patent/FI921516A/en unknown
- 1992-07-14 JP JP4187061A patent/JPH05237344A/en not_active Withdrawn
-
1994
- 1994-01-11 AU AU53101/94A patent/AU5310194A/en not_active Abandoned
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 |
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