Process for obtaining a desulfated phosphoric acid for use in fo

Details Process for obtaining a desulfated phosphoric acid for use in fo Process for obtaining a desulfated phosphoric acid for use in fo

1979-09-25

1981-04-21

Vertiz, O. R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423166, C01B 2516, C01F 100

Patent

active

042632650

ABSTRACT:
A continuous process for removing sulfate ions from a substantially water-insoluble organic phase containing phosphoric acid and sulfuric acid is described. The organic phase is treated countercurrently in a first zone with an aqueous solution originating in a third contact zone, the organic phase issuing from the first zone is treated in a second zone with an aqueous solution containing barium ions, then the resultant organic phase is treated in a third zone with water. The aqueous phase exiting from the second zone is separated from the BaSO.sub.4 precipitate, recharged with barium and recycled into the second contact zone. The phosphoric acid thus obtained is suitable for use in human foods and beverages.

REFERENCES:
patent: 3607029 (1971-09-01), Goret et al.
patent: 3784678 (1974-01-01), Beltz et al.
patent: 4041134 (1977-08-01), Kikuchi et al.
patent: 4070443 (1978-01-01), Kikuchi et al.
patent: 4118462 (1978-10-01), Desire et al.

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