Method of producing nitric acid and refrigeration

Details Method of producing nitric acid and refrigeration Method of producing nitric acid and refrigeration

1989-04-14

1990-09-25

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

62 40, F25J 102

Patent

active

049590880

ABSTRACT:
A method of and an apparatus for producing an air-ammonia mixture for use in production of nitric acid and for producing refrigeration wherein liquid ammonia is evaporated in a heat exchanger to obtain ammonia vapor and accompanying refrigeration, the ammonia vapor is absorbed by a lean ammonia solution to obtain a rich ammonia solution, ammonia from the rich ammonia solution is stripped with air whereby an air-ammonia mixture, a lean ammonia solution, and additional refrigeration is obtained, and the lean ammonia solution obtained as a result of stripping ammonia from the rich ammonia solution with air is used for absorbing further ammonia vapor for producing a further rich ammonia solution.

REFERENCES:
patent: 3101262 (1963-08-01), Rottmayr
patent: 3257812 (1966-06-01), Shaievitz
patent: 3312075 (1967-04-01), Becker
patent: 3327487 (1967-06-01), Karwat
patent: 3349569 (1967-10-01), Nebgen
patent: 3543529 (1970-12-01), Knapp et al.
patent: 3553972 (1971-01-01), Markbreiter et al.
patent: 3620031 (1972-11-01), Tennyson
patent: 3872025 (1975-03-01), Singleton
patent: 3985529 (1976-10-01), Petersson
patent: 4380461 (1983-04-01), Haslam et al.

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