Process for producing ammonium polyphosphate

Details Process for producing ammonium polyphosphate Process for producing ammonium polyphosphate

1985-04-19

1987-01-20

Heller, Gregory A.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423310, 423313, 423317, 423321R, 71 43, C01B 1516, C01B 2526, C01B 2516

Patent

active

046379215

ABSTRACT:
An improved process of concentrating wet process phosphoric acid by continuously contacting an acid feed containing at least about 56 weight percent of P.sub.2 O.sub.5 based on the total weight of the feed with heated gases consisting of air and gaseous fuel combustion products thereby forming a mixture of said gases containing entrained superphosphoric acid particles, continuously coalescing said mixture in a coalescence zone forming coalesced superphosphoric acid and continuously removing the coalesced superphosphoric acid from said coalescence zone.

REFERENCES:
patent: 3044855 (1962-07-01), Young
patent: 3317306 (1967-05-01), Getsinger et al.
patent: 3671202 (1972-06-01), Esterhoy et al.
patent: 3988140 (1976-10-01), Burns et al.
patent: 4364912 (1982-12-01), Hill

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