Hybrid phosphoric acid process

Details Hybrid phosphoric acid process Hybrid phosphoric acid process

1976-07-23

1977-10-11

Vertiz, O. R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

C01B 2516

Patent

active

040535630

ABSTRACT:
A wet phosphoric acid process involving operation of two streams, substantially equivalent, one producing phosphoric acid of a particular level of concentration, and gypsum as a by-product, and the other phosphoric acid of a different concentration, producing calcium sulfate hemihydrate as a by-product, with means for interconnecting and coordinately operating the processes so as to produce a single acid product stream of a higher concentration than the sum of the individual streams. The method consists of employing acid from one process as a wash in the second and balancing the flow streams to produce the combined product acid of enhanced final concentration and the plants involved in carrying into effect this method of operation.

REFERENCES:
patent: 3472619 (1969-10-01), Chelminski
A. V. Slack, Phosphoric Acid, 1968.

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