Process for ammoniating phosphoric acid

Details Process for ammoniating phosphoric acid Process for ammoniating phosphoric acid

1979-10-04

1981-08-18

Thomas, Earl C.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423313, C01B 2528

Patent

active

042846137

ABSTRACT:
A process which comprises reacting ammonia with phosphoric acid in a reaction vessel to form a reaction mixture comprising ammonium phosphate characterized in that the reaction mixture is allowed to foam whereby there is formed a foaming reaction mixture comprising steam and ammonium phosphate; and in that steam and ammonium phosphate are discharged from the reaction vessel through a common outlet. Preferably the ammoniation is carried out under pressure and the foam reaction mixture is discharged via a spray nozzle into a zone of lower pressure where water is evolved spontaneously, e.g. by flash evaporation as the product is sprayed, to give a solid particulate product.

REFERENCES:
patent: 3419378 (1968-12-01), Kearns
patent: 3974263 (1976-08-01), Crerar et al.
patent: 4009245 (1977-02-01), Hudson et al.

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