GB1260921A - De-encrusting process - Google Patents

De-encrusting process

Info

Publication number
GB1260921A
GB1260921A GB1385969A GB1385969A GB1260921A GB 1260921 A GB1260921 A GB 1260921A GB 1385969 A GB1385969 A GB 1385969A GB 1385969 A GB1385969 A GB 1385969A GB 1260921 A GB1260921 A GB 1260921A
Authority
GB
United Kingdom
Prior art keywords
ammonia
liquor
nacl
naoh
precarbonated
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
GB1385969A
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.)
Solvay SA
Original Assignee
Solvay SA
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 Solvay SA filed Critical Solvay SA
Publication of GB1260921A publication Critical patent/GB1260921A/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
    • C01D7/00—Carbonates of sodium, potassium or alkali metals in general
    • C01D7/18—Preparation by the ammonia-soda process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/02—Making microcapsules or microballoons
    • B01J13/025—Applications of microcapsules not provided for in other subclasses

Abstract

1,260,921. De-encrusting ammonia-soda towers. SOLVAY ET CIE S.A. 17 March, 1969 [12 April, 1968], No. 13859/69. Heading C1A. A tower, used for precipitating, by means of carbon dioxide, NaHCO 3 from a precarbonated ammoniated NaCl/NaOH liquor according to the ammonia-soda process is de-encrusted by treating with an. ammonia-free NaCl/NaOH which may or may not be precarbonated, and passing the liquor from the tower to an optional pre-carbonating stage and then to an ammonia absorbing stage, the liquor so obtained being suitable for the precipitation of further NaHCO 3 . The precarbonation may be brought about by means of waste gases containing CO 2 . The NaCl/NaOH liquor may derive from a diaphragm cell and may be mixed with purified NaCl solution.
GB1385969A 1968-04-12 1969-03-17 De-encrusting process Expired GB1260921A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE713611 1968-04-12

Publications (1)

Publication Number Publication Date
GB1260921A true GB1260921A (en) 1972-01-19

Family

ID=3852740

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1385969A Expired GB1260921A (en) 1968-04-12 1969-03-17 De-encrusting process

Country Status (3)

Country Link
BE (1) BE713611A (en)
FR (1) FR2006126A1 (en)
GB (1) GB1260921A (en)

Also Published As

Publication number Publication date
BE713611A (en) 1968-10-14
FR2006126A1 (en) 1969-12-19

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