Method for simultaneously concentrating and purifying phosphoric

Details Method for simultaneously concentrating and purifying phosphoric Method for simultaneously concentrating and purifying phosphoric

1976-02-09

1978-04-25

Nozick, Bernard

Gas separation

Means within gas stream for conducting concentrate to collector

55 53, 55 71, 159 4A, 159DIG19, B01D 1900

Patent

active

040860698

ABSTRACT:
The invention has as its object a method for simultaneously concentrating and purifying phosphoric acid. It consists in bringing into contact, in a tower, the acid to be concentrated and purified divided into fine droplets with a current of hot gases and in collecting, at the bottom of the tower, the concentrated and purified acid. Previously, the acid has been mixed, with water and with a fraction of the said concentrated and purified acid. The invention is implemented for the producing of phosphoric acid having a very low fluorine content, suitable for being used for the synthesis of phosphate foodstuffs.

REFERENCES:
patent: 3276510 (1966-10-01), Austin et al.
patent: 3397123 (1968-08-01), Cull
patent: 3544269 (1970-12-01), Rushton
patent: 3718729 (1973-02-01), Amin et al.
patent: 3764658 (1973-10-01), Darwin et al.

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