FI763697A - - Google Patents

Info

Publication number
FI763697A
FI763697A FI763697A FI763697A FI763697A FI 763697 A FI763697 A FI 763697A FI 763697 A FI763697 A FI 763697A FI 763697 A FI763697 A FI 763697A FI 763697 A FI763697 A FI 763697A
Authority
FI
Finland
Application number
FI763697A
Other languages
Finnish (fi)
Inventor
Hans Olof Samuelson
Original Assignee
Mo Och Domsjoe Ab
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 Mo Och Domsjoe Ab filed Critical Mo Och Domsjoe Ab
Publication of FI763697A publication Critical patent/FI763697A/fi

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
    • D21C3/266—Multistage processes the same pulping agent being used in all stages
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S423/00—Chemistry of inorganic compounds
    • Y10S423/03—Papermaking liquor
FI763697A 1976-02-05 1976-12-23 FI763697A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7601284A SE407244B (sv) 1976-02-05 1976-02-05 Forfarande for framstellning av cellulosamassa av lovved i tva steg

Publications (1)

Publication Number Publication Date
FI763697A true FI763697A (ja) 1977-08-06

Family

ID=20326918

Family Applications (1)

Application Number Title Priority Date Filing Date
FI763697A FI763697A (ja) 1976-02-05 1976-12-23

Country Status (5)

Country Link
US (1) US4113553A (ja)
JP (1) JPS5296201A (ja)
CA (1) CA1080914A (ja)
FI (1) FI763697A (ja)
SE (1) SE407244B (ja)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55103386A (en) * 1979-01-29 1980-08-07 Sanyo Kokusaku Pulp Co Two stage sulphate digesting method
DE3216161A1 (de) * 1982-04-30 1983-11-03 Linde Ag, 6200 Wiesbaden Verfahren zur entfernung von schwefelwasserstoff aus gasgemischen
US5326433A (en) * 1991-02-06 1994-07-05 Ahlstrom Recovery Inc. Multi-level sulfide content white liquor production and utilization in cellulose pulping
US5865898A (en) * 1992-08-06 1999-02-02 The Texas A&M University System Methods of biomass pretreatment
US5693296A (en) * 1992-08-06 1997-12-02 The Texas A&M University System Calcium hydroxide pretreatment of biomass
SE506702C2 (sv) * 1996-04-30 1998-02-02 Kvaerner Pulping Tech Förbehandling av fibermaterial med in situ bildad vätesulfid
US5911853A (en) * 1997-09-11 1999-06-15 International Paper Company Method for treating paper mill condensate to reduce the amount of sulfur compounds therein
US20070240837A1 (en) * 2006-04-13 2007-10-18 Andritz Inc. Hardwood alkaline pulping processes and systems
WO2012131665A1 (en) 2011-04-01 2012-10-04 University Of Limerick Lignocellulose processing

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2854334A (en) * 1954-11-08 1958-09-30 Hawaiian Dev Company Ltd Rapid kraft pulping process for bagasse and other fibrous, non-woody lignocellulosic plant materials
US3192102A (en) * 1962-08-15 1965-06-29 William J Nolan Pulping process
FI44743C (fi) * 1962-09-15 1971-12-10 Dominon Tar & Chemical Syklinen menetelmä selluloosan valmistamiseksi
US3331733A (en) * 1962-12-17 1967-07-18 Mo Och Domsjoe Ab Method of preparing polysulfide-containing cooking liquor
US3210235A (en) * 1963-04-08 1965-10-05 Scott Paper Co Pulping of cellulose materials in the presence of free sulfur in a kraft pulping system and cyclic liquor recovery therefor
US3874991A (en) * 1968-08-23 1975-04-01 Westvaco Corp Polysulfide impregnation of lignocellulosic materials in a continuous digester
US3560329A (en) * 1968-12-27 1971-02-02 Combustion Eng Process for low sulfide chemical recovery
US3841962A (en) * 1972-07-31 1974-10-15 Mac Millan Bloedel Ltd Hydrogen sulfide pretreatment of lignocellulosic materials in alkaline pulping processes
US3811995A (en) * 1972-09-05 1974-05-21 Westvaco Corp Method of high yield semichemical pulp production

Also Published As

Publication number Publication date
JPS5296201A (en) 1977-08-12
US4113553A (en) 1978-09-12
CA1080914A (en) 1980-07-08
SE7601284L (sv) 1977-08-06
SE407244B (sv) 1979-03-19

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