Ammonia synthesis

Details Ammonia synthesis Ammonia synthesis

1989-02-16

1990-03-20

Doll, John

Chemistry of inorganic compounds

Nitrogen or compound thereof

Ammonia or ammonium hydroxide

C01C 104

Patent

active

049100076

ABSTRACT:
Ammonia synthesis gas is made from a raw gas comprising hydrogen, carbon dioxide and medium boiling point gases including nitrogen in excess of the proportion required an ammonia synthesis gas, by a pressure swing adsorption process characterized by feeding to the absorbent a raw gas in which hydrogen and total medium boiling point gases are present in a volume ratio in the range 1.25 to 2.5, and the medium boiling point gases comprise nitrogen to the extent of at least 90% v/v on the total of such gases. Preferred ways of making the raw gas, of ensuring purity of the product gas and of recovering useful heat are described.

REFERENCES:
patent: 4592860 (1986-06-01), Fuderer
patent: 4624841 (1986-11-01), Hidaki

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