Foam prevention in sodium carbonate crystallization

Details Foam prevention in sodium carbonate crystallization Foam prevention in sodium carbonate crystallization

1976-05-20

1978-08-01

Emery, Stephen J.

Chemistry: physical processes

Physical processes

Crystallization

23302T, 423206T, 252321, B01d 902, C01d 724

Patent

active

041040333

ABSTRACT:
In crystallization of a carbonate of sodium from aqueous solutions, a water soluble homopolymer of oxyethylene or block copolymer of oxyethylene and oxypropylene is employed as a defoamer. The presence of the defoamer in the resulting sodium carbonate does not adversely interfere with carbon dioxide absorption in subsequent production of sodium bicarbonate.

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patent: 3084026 (1963-04-01), Frint et al.
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patent: 3796794 (1974-03-01), Ilardi
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patent: 3846329 (1974-11-01), Householder et al.
patent: 3890238 (1975-06-01), Boehmer
patent: 3962119 (1976-06-01), Cosentino et al.
Polyethers, Part I, Polyalkylene Oxides and Other Polyethers, Gaylord, N.G., ed., Interscience Publishers, N.Y. (1963), pp. 207-210, 233-237.
Organic Chemistry, Morrison & Boyd (1965) pp. 521-522.

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