Process for separating a phosphoric acid-solvent solution

Details Process for separating a phosphoric acid-solvent solution Process for separating a phosphoric acid-solvent solution

1977-12-27

1978-09-26

Vertiz, O. R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423313, C01B 2516

Patent

active

041170920

ABSTRACT:
There is disclosed a countercurrent multi-stage process for separating an organic solvent from a phosphoric acid solvent solution by the addition of an alkali material such that the ratio of Na.sub.2 O to P.sub.2 O.sub.5 in the water phase in each stage is from 0.45:1 to 0.90:1 whereby substantially all the organic solvent is recovered from the starting solution in the final stage of the extractor.

REFERENCES:
patent: 1981145 (1934-11-01), Keller
patent: 3367738 (1968-02-01), Schallert et al.
patent: 3764657 (1973-10-01), Frankenfeld et al.
patent: 3894143 (1975-07-01), Semel et al.
J. Agr. Food Chem., Purification of WPA by Solvent Extraction, vol. 22, No. 6, 1974, pp. 1099-1106.

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