Method and apparatus for using froth preventives

Details Method and apparatus for using froth preventives Method and apparatus for using froth preventives

1975-08-14

1977-02-22

Schafer, Richard E.

Compositions

Preservative agents

Anti-corrosion

252361, 55178, B01D 1904

Patent

active

040091180

ABSTRACT:
A method for breaking or extinguishing foam on a body of foam-forming liquid, requiring only a fraction of the amount of foam breaker used in conventional procedures, comprises initially adding a small amount of a catalyst-like foam preventive agent to extinguish the foam, then recycling the resulting foam preventive-containing liquid to contact fresh foamed liquid. Recycling continues until the foam preventive, due to dilution, becomes substantially ineffective, whereupon defoamed liquid, containing diluted preventive, is withdrawn from the system, a fresh amount of foam preventive is introduced, and the cyclic procedure repeated. Apparatus for performing the process is also disclosed.

REFERENCES:
patent: 1603507 (1928-10-01), Beveridge
patent: 2184195 (1939-12-01), Naucier
patent: 2800459 (1957-07-01), Dijksman et al.
patent: 3224964 (1965-12-01), Derenk et al.
patent: 3679600 (1972-07-01), Hahm

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