BE517582A - - Google Patents

Info

Publication number
BE517582A
BE517582A BE517582DA BE517582A BE 517582 A BE517582 A BE 517582A BE 517582D A BE517582D A BE 517582DA BE 517582 A BE517582 A BE 517582A
Authority
BE
Belgium
Application number
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.)
Publication of BE517582A publication Critical patent/BE517582A/xx

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
    • D21C11/0085—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
    • 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
    • Y10S210/00—Liquid purification or separation
    • Y10S210/928—Paper mill waste, e.g. white water, black liquor treated
    • 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
BE517582D 1952-02-21 BE517582A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US272719A US2750290A (en) 1952-02-21 1952-02-21 Recovery of cooking liquor from spent semi-chemical pulping liquors

Publications (1)

Publication Number Publication Date
BE517582A true BE517582A (zh)

Family

ID=23040975

Family Applications (1)

Application Number Title Priority Date Filing Date
BE517582D BE517582A (zh) 1952-02-21

Country Status (5)

Country Link
US (1) US2750290A (zh)
BE (1) BE517582A (zh)
DE (1) DE1003031B (zh)
GB (1) GB742598A (zh)
NL (1) NL96180C (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2802791A (en) * 1953-09-28 1957-08-13 Paper Chemistry Inst Treatment of spent sulfite liquor
US3298781A (en) * 1962-02-09 1967-01-17 Mitsubishi Shipbuilding & Eng Production of sulfites from red mud
US3873415A (en) * 1973-05-03 1975-03-25 Spring Chemicals Ltd Process for reducing the amount of calcium contained in sodium-base waste sulfite liquor by the use of a sodium and/or an ammonium compound and additional calcium
US3962080A (en) * 1973-10-31 1976-06-08 Industrial Resources, Inc. Sodium sulfur oxides wastes disposal process

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2598311A (en) * 1952-05-27 Manufacture of vanillin
NL36519C (zh) * 1926-04-21 1900-01-01
FR642270A (fr) * 1927-01-21 1928-08-25 Barbou Et Cie Soc Procédé pour la récupération, par voie chimique, des éléments actifs des lessives résiduaires après cuisson des matières cellulosiques
US1815328A (en) * 1927-11-23 1931-07-21 Brown Co Process of recovering and utilizing the valuable compounds in spent cooking liquors
US1983789A (en) * 1928-01-23 1934-12-11 Bradley Mckeefe Corp Production of pulp and treatment of residual liquors, etc.
US2029616A (en) * 1931-01-16 1936-02-04 Patentaktiebolaget Grondal Ram Process for preparing alkali sulphite or alkali bisulphite solutions from waste liquors obtained in the digestion of cellulose with alkali sulphur compounds
US2010077A (en) * 1932-04-29 1935-08-06 Patentaktiebolaget Grondal Ram Production of solutions of alkali metal salts of sulphurous acid
US2354553A (en) * 1940-01-10 1944-07-25 Daniel L Sherk Method of recovering constituents of waste sulphite liquor
US2470764A (en) * 1943-09-23 1949-05-24 Dunbar Thomas Leonidas Method of treating waste sulfite liquor
US2516827A (en) * 1945-07-09 1950-07-25 Ontario Paper Co Ltd Method of producing vanillin
US2482594A (en) * 1946-04-01 1949-09-20 Paper Chemistry Inst Method of preparing phenolic materials from lignin
US2528350A (en) * 1947-06-05 1950-10-31 Hardwood By Products Inc Two-step digestion of hardwoods
FI27541A (fi) * 1948-06-16 1955-03-10 Aschaffenburger Zellstoffwerke Förfaringssätt för framställning av vanillin och vanillinderivat
US2692291A (en) * 1950-06-06 1954-10-19 Monsanto Chemicals Manufacture of vanillin from lignin

Also Published As

Publication number Publication date
GB742598A (en) 1955-12-30
US2750290A (en) 1956-06-12
DE1003031B (de) 1957-02-21
NL96180C (zh)

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