CA947010A - Chlorination of alkali metal carbonates recovered from the production of pulp - Google Patents

Chlorination of alkali metal carbonates recovered from the production of pulp

Info

Publication number
CA947010A
CA947010A CA106,032A CA106032A CA947010A CA 947010 A CA947010 A CA 947010A CA 106032 A CA106032 A CA 106032A CA 947010 A CA947010 A CA 947010A
Authority
CA
Canada
Prior art keywords
chlorination
pulp
recovered
production
alkali metal
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
CA106,032A
Other versions
CA106032S (en
Inventor
William H. Rapson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Erco Envirotech Ltd
Original Assignee
Erco Envirotech Ltd
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 Erco Envirotech Ltd filed Critical Erco Envirotech Ltd
Priority to CA106,032A priority Critical patent/CA947010A/en
Priority to US00119294A priority patent/US3755068A/en
Priority to CA187,733A priority patent/CA955707A/en
Application granted granted Critical
Publication of CA947010A publication Critical patent/CA947010A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B11/00—Oxides or oxyacids of halogens; Salts thereof
    • C01B11/04—Hypochlorous acid
    • C01B11/06—Hypochlorites
    • C01B11/062—Hypochlorites of alkali metals
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B11/00—Oxides or oxyacids of halogens; Salts thereof
    • C01B11/02—Oxides of chlorine
    • C01B11/022—Chlorine dioxide (ClO2)
    • C01B11/023—Preparation from chlorites or chlorates
    • C01B11/025—Preparation from chlorites or chlorates from chlorates without any other reaction reducing agent than chloride ions
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D3/00—Halides of sodium, potassium or alkali metals in general
    • C01D3/04—Chlorides
    • 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
    • D21C3/18—Pulping cellulose-containing materials with halogens or halogen-generating compounds
    • 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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1026—Other features in bleaching processes
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
    • 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
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/08—Chlorine-containing liquid regeneration

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
CA106,032A 1971-02-23 1971-02-23 Chlorination of alkali metal carbonates recovered from the production of pulp Expired CA947010A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA106,032A CA947010A (en) 1971-02-23 1971-02-23 Chlorination of alkali metal carbonates recovered from the production of pulp
US00119294A US3755068A (en) 1971-02-23 1971-02-26 Regeneration of chlorine dioxide for pulp treatment
CA187,733A CA955707A (en) 1971-02-23 1973-12-10 Production of pulp

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA106,032A CA947010A (en) 1971-02-23 1971-02-23 Chlorination of alkali metal carbonates recovered from the production of pulp
US11929471A 1971-02-26 1971-02-26

Publications (1)

Publication Number Publication Date
CA947010A true CA947010A (en) 1974-05-14

Family

ID=25666732

Family Applications (1)

Application Number Title Priority Date Filing Date
CA106,032A Expired CA947010A (en) 1971-02-23 1971-02-23 Chlorination of alkali metal carbonates recovered from the production of pulp

Country Status (2)

Country Link
US (1) US3755068A (en)
CA (1) CA947010A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5356610A (en) * 1993-03-09 1994-10-18 Eka Nobel Ab Method for removing impurities from an alkali metal chlorate process

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4943481B1 (en) * 1971-06-14 1974-11-21
US4118271A (en) * 1972-03-25 1978-10-03 Jujo Paper Co., Ltd. Method for the preparation of a pulp
US3909344A (en) * 1973-12-03 1975-09-30 Erco Envirotech Ltd Removal of sodium chloride from pulp mill operations
US3920801A (en) * 1974-04-05 1975-11-18 Hooker Chemicals Plastics Corp Method of producing chlorine dioxide from hydrogen chloride
US3954552A (en) * 1974-08-05 1976-05-04 Erco Envirotech Ltd. Removal of sodium chloride from pulp mill systems
US3945880A (en) * 1974-08-05 1976-03-23 Erco Envirotech Ltd. Sodium chloride removal in pulp mill systems
AU657842B2 (en) * 1992-03-13 1995-03-23 Eka Chemicals Oy Method for producing alkaline metal hydroxide
US6319358B1 (en) 1998-05-29 2001-11-20 Institue Of Paper Science And Technology Inc. Electrolytic causticizing of smelt from a kraft recovery furnace
US6322768B1 (en) 1998-09-29 2001-11-27 International Paper Company Recovery of chlorine dioxide from gas streams
FI123086B (en) * 2011-02-28 2012-10-31 Aalto Korkeakoulusaeaetioe A method for recovering chemicals
JP6599068B1 (en) * 2017-12-20 2019-10-30 ユニ・チャーム株式会社 Method for producing recycled pulp fiber

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3386915A (en) * 1964-03-18 1968-06-04 Solvay Process for the manufacturing of chlorine dioxide in solution and the use of the solution thus obtained
US3366534A (en) * 1964-08-14 1968-01-30 Hooker Chemical Corp Complete chemical system for a kraft mill
US3547810A (en) * 1968-05-22 1970-12-15 Hal B H Cooper Treatment of water
US3666619A (en) * 1969-04-08 1972-05-30 Calcasieu Paper Co Inc Kraft pulp and paper recovery process
US3619350A (en) * 1969-07-11 1971-11-09 Richard Marchfelder Chlorine dioxide pulp bleaching system
US3585147A (en) * 1969-10-01 1971-06-15 Int Dioxcide Inc Stabilized chlorine dioxide solutions containing a chloride and processes of making and using same
US3652407A (en) * 1969-10-28 1972-03-28 Rohm & Haas Decolorization of kraft wood pulp bleach effluents

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5356610A (en) * 1993-03-09 1994-10-18 Eka Nobel Ab Method for removing impurities from an alkali metal chlorate process

Also Published As

Publication number Publication date
US3755068A (en) 1973-08-28

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