Process for separating acid gases and ammonia from dilute aqueou

Details Process for separating acid gases and ammonia from dilute aqueou Process for separating acid gases and ammonia from dilute aqueou

1978-05-26

1981-04-07

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

And recovering heat by indirect heat exchange

Utilizing recovered heat for heating feed

203 11, 203 25, 203 26, 203 36, 203 37, 203 79, 203 80, 203 92, 423357, C02F 104, B01D 338

Patent

active

042604621

ABSTRACT:
A process is described for the removal of acid gases and ammonia from dilute aqueous solutions. This is achieved by two separate and successive distillations. In the first distillation, substantially all of the acid gases and free ammonia are removed. In the second distillation, substantially all of the fixed ammonia is removed. Exemplary aqueous solutions are waste waters from coke oven and coal conversion plants.

REFERENCES:
patent: 1744261 (1930-01-01), Cooke
patent: 2276089 (1942-03-01), Ragatz
patent: 2785114 (1957-03-01), Schmalenbach
patent: 3278423 (1966-10-01), Millar
patent: 3324010 (1967-06-01), Bauer et al.
patent: 3399120 (1968-08-01), Lovett
patent: 3445345 (1969-05-01), Katzen et al.
patent: 3639497 (1972-02-01), Martel et al.

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