Treatment of contaminated phosphoric acid to recover usable acid

Details Treatment of contaminated phosphoric acid to recover usable acid Treatment of contaminated phosphoric acid to recover usable acid

1983-09-21

1984-11-20

Hewer, Gregory A.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423316, 423317, C01B 2516

Patent

active

044838387

ABSTRACT:
Phosphoric acid containing organic contaminants, such as phosphoric acid recovered from a thiophenol process, is treated to recover usable acid by conducting a hot separation of the contaminated acid into acidic and organic phases, removing the organic phase, preheating the acidic phase, stripping the latter with steam and removing any remaining organic contaminants from the stripped acid.

REFERENCES:
patent: 2345506 (1944-03-01), Slotterbeck
patent: 2947788 (1960-08-01), Pitt
patent: 3734699 (1973-05-01), Pitt
patent: 4256721 (1981-03-01), Blakey et al.
patent: 4415506 (1983-11-01), Carron, et al.

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