Defoamer and processing aid for wet process phosphoric acid

Details Defoamer and processing aid for wet process phosphoric acid Defoamer and processing aid for wet process phosphoric acid

1984-02-15

1985-09-10

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

252358, 423320, B01D 1904

Patent

active

045405115

ABSTRACT:
A defoamer composition comprising a mixture of defoaming effective amounts of monocarboxylic acid having from 12 to 26 carbon atoms, a monoalkanolamide, and an alcohol selected from the group consisting of primary linear aliphatic alcohols ranging from C.sub.4 to C.sub.20, primary branch aliphatic alcohols ranging from C.sub.4 to C.sub.20, and secondary alcohols ranging from C.sub.6 to C.sub.12 ; and a method of inhibiting foaming in a phosphate rock and sulfuric acid medium employed in the synthesis of phosphoric acid by the "wet process" manufacture of phosphoric acid which comprises adding to the reaction medium an effective amount of the above described defoamer composition.

REFERENCES:
patent: 2085709 (1937-06-01), Steibelt
patent: 3653827 (1972-04-01), Hey et al.
patent: 3671235 (1972-06-01), Yamaguchi et al.
patent: 3761423 (1973-09-01), Hey et al.
patent: 4065402 (1977-12-01), Satterwhite et al.
patent: 4065404 (1977-12-01), Satterwhite et al.
patent: 4145310 (1979-03-01), Satterwhite et al.

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