GB1407276A - Method for directly converting sodium carbonate into caustic soda and application of said method to pulp and paper industry - Google Patents

Method for directly converting sodium carbonate into caustic soda and application of said method to pulp and paper industry

Info

Publication number
GB1407276A
GB1407276A GB5212672A GB5212672A GB1407276A GB 1407276 A GB1407276 A GB 1407276A GB 5212672 A GB5212672 A GB 5212672A GB 5212672 A GB5212672 A GB 5212672A GB 1407276 A GB1407276 A GB 1407276A
Authority
GB
United Kingdom
Prior art keywords
titanium dioxide
smelt
caustic soda
sodium carbonate
mixture
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
GB5212672A
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.)
New Oji Paper Co Ltd
Original Assignee
Oji Paper Co 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 Oji Paper Co Ltd filed Critical Oji Paper Co Ltd
Priority to GB5212672A priority Critical patent/GB1407276A/en
Priority to DE19722257463 priority patent/DE2257463C3/en
Priority claimed from DE19722257463 external-priority patent/DE2257463C3/en
Priority to FR7244029A priority patent/FR2209718B1/fr
Publication of GB1407276A publication Critical patent/GB1407276A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
    • C01D1/04—Hydroxides
    • C01D1/20—Preparation by reacting oxides or hydroxides with alkali metal salts
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
    • C01D1/04—Hydroxides
    • C01D1/20—Preparation by reacting oxides or hydroxides with alkali metal salts
    • C01D1/22—Preparation by reacting oxides or hydroxides with alkali metal salts with carbonates or bicarbonates
    • 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
    • D21C11/0092—Substances modifying the evaporation, combustion, or thermal decomposition processes of black liquor

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

1407276 Caustic soda OJI PAPER CO Ltd 14 Nov 1972 52126/72 Heading C1A [Also in Division D2] A caustic soda solution is made by adding an ilmenite ore or a material containing a major proportion of titanium dioxide to sodium carbonate or sodium bicarbonate, heating the mixture to 900‹ to 1500‹ C., dissolving the product in water and separating the liquid from the sludge containing titanium dioxide. 20 to 40% by weight of titanium dioxide, based on the weight of sodium carbonate or bicarbonate, may be added and silica may be present with the titanium dioxide in a ratio of 1 : 1 to 1 : 2. The process may be used for the recovery of cooking chemicals from pulping waste liquor by adding titanium dioxide or ilmenite ore to a smelt from a recovery boiler in a chemical recovery process for soda pulping waste liquor, heating the mixture to 900‹ to 1500‹ C., dissolving the product in water to convert the sodium oxide component in the smelt into sodium hydroxide, and separating the mother liquor from the sludge containing titanium dioxide. Kraft pulping waste liquor may be so treated, the mixture of titanium dioxide and smelt, with the optional addition of silica, preferably being heated in a non-oxidizing atmosphere. The titanium dioxide separated and precipitated from the mother liquor may then be recycled to the step of adding to a smelt after the titanium dioxide is heated to a temperature of 300‹ C. in the atmosphere and completely oxidized.
GB5212672A 1972-11-10 1972-11-10 Method for directly converting sodium carbonate into caustic soda and application of said method to pulp and paper industry Expired GB1407276A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB5212672A GB1407276A (en) 1972-11-10 1972-11-10 Method for directly converting sodium carbonate into caustic soda and application of said method to pulp and paper industry
DE19722257463 DE2257463C3 (en) 1972-11-23 Process for the recovery of sodium hydroxide from the incineration of alkaline pulp waste liquors
FR7244029A FR2209718B1 (en) 1972-11-10 1972-12-11

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB5212672A GB1407276A (en) 1972-11-10 1972-11-10 Method for directly converting sodium carbonate into caustic soda and application of said method to pulp and paper industry
DE19722257463 DE2257463C3 (en) 1972-11-23 Process for the recovery of sodium hydroxide from the incineration of alkaline pulp waste liquors
FR7244029A FR2209718B1 (en) 1972-11-10 1972-12-11

Publications (1)

Publication Number Publication Date
GB1407276A true GB1407276A (en) 1975-09-24

Family

ID=27184863

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5212672A Expired GB1407276A (en) 1972-11-10 1972-11-10 Method for directly converting sodium carbonate into caustic soda and application of said method to pulp and paper industry

Country Status (2)

Country Link
FR (1) FR2209718B1 (en)
GB (1) GB1407276A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983003407A1 (en) * 1982-03-25 1983-10-13 Nguyen, Kien, Loi Alkali regeneration process
WO2020220117A1 (en) * 2019-04-29 2020-11-05 Fpinnovations Process to recover alkali from a metal oxide/hydroxide containing material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4224289A (en) * 1978-04-20 1980-09-23 Australian Paper Manufacturers Limited Alkali regeneration process

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2366177A (en) * 1941-11-15 1945-01-02 Thomas P Campbell Treatment of titaniferous ores
GB789104A (en) * 1955-12-07 1958-01-15 Blancs De Zinc De La Mediterra Improvements in or relating to the production of alkali metal titanates

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983003407A1 (en) * 1982-03-25 1983-10-13 Nguyen, Kien, Loi Alkali regeneration process
WO2020220117A1 (en) * 2019-04-29 2020-11-05 Fpinnovations Process to recover alkali from a metal oxide/hydroxide containing material

Also Published As

Publication number Publication date
DE2257463B2 (en) 1977-06-02
FR2209718B1 (en) 1976-01-30
FR2209718A1 (en) 1974-07-05
DE2257463A1 (en) 1975-06-19

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee