Ammonia synthesis

Details Ammonia synthesis Ammonia synthesis

1987-02-20

1988-10-25

Doll, John

Chemistry of inorganic compounds

Nitrogen or compound thereof

Ammonia or ammonium hydroxide

C01C 104

Patent

active

047802987

ABSTRACT:
An ammonia production process in which excess nitrogen and traces of carbon oxides are removed from raw ammonia synthesis gas firstly by application of partial condensation and secondly by application of washing action provided by carbon-oxides-free liquified gas, rich in nitrogen, which is derived from a cryogenic process used preferentially for separation of hydrogen from the ammonia synthesis loop purge gas as produced in processes which use excess of nitrogen above stoichiometric requirements in the circulating gas in the synthesis loop.

REFERENCES:
patent: 4058589 (1977-11-01), Haslam
patent: 4296085 (1981-10-01), Banquy
patent: 4409196 (1983-10-01), Skinner et al.
patent: 4524056 (1985-06-01), Banquy
patent: 4568530 (1986-02-01), Mandelik et al.
patent: 4572829 (1986-02-01), Fuderer
patent: 4613492 (1986-09-01), Winter

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