Method for treating ammonia and urea condensates

Details Method for treating ammonia and urea condensates Method for treating ammonia and urea condensates

1992-01-16

1993-06-29

Langel, Wayne

Chemistry of inorganic compounds

Nitrogen or compound thereof

Ammonia or ammonium hydroxide

564 69, 564 73, C01C 104, C07C27300

Patent

active

052232387

ABSTRACT:
A method is described which enables ammonia plant process condensate contaminated with ammonia, carbon dioxide and methanol and urea plant condensate contaminated with urea, ammonia, carbon dioxide and other combined forms of ammonia and carbon dioxide to be simultaneously converted, in a single treatment vessel, substantially and continuously to a vaporous stream rich in ammonia, carbon dioxide and methanol and an liquid stream poor in ammonia, carbon dioxide, methanol and urea. The vaporous stream thus produced is recycled and employed as a feedstock in the reforming section in the ammonia plant.

REFERENCES:
patent: 3970739 (1976-07-01), Shiraishi et al.
patent: 4341640 (1982-07-01), Landis
patent: 4410503 (1983-10-01), Van Nassau et al.
patent: 4552979 (1985-11-01), Stokes

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