Catalytic gas synthesis process

Details Catalytic gas synthesis process Catalytic gas synthesis process

1983-03-07

1985-05-21

Andrews, Melvyn J.

Chemistry of inorganic compounds

Nitrogen or compound thereof

Ammonia or ammonium hydroxide

423361, 122 7R, C01C 108

Patent

active

045185743

ABSTRACT:
The present invention is generally directed to an improved process and apparatus for the production of gaseous products such as ammonia by catalytic, exothermic gaseous reactions and is specifically directed to an improved process which utilizes a gas-phase catalytic reaction of nitrogen and hydrogen for the synthesis of ammonia. This improved process for the production of ammonia utilizes an ammonia converter apparatus designed to comprise at least two catalyst stages and a reheat exchanger so arranged as to provide indirect heat exchange of the gaseous effluent from the last reactor catalyst stage with the effluent from at least one other reactor catalyst stage having a higher temperature level in order to reheat the effluent from the last reactor catalyst stage prior to exiting the reactor vessel, thereby facilitating higher level heat recovery from the reactor effluent.

REFERENCES:
patent: 3403000 (1968-09-01), Hennel
patent: 3721532 (1973-03-01), Wright et al.
patent: 4101281 (1978-07-01), Pagani
patent: 4180543 (1979-12-01), Ward
patent: 4181701 (1980-01-01), Topsoe et al.
patent: 4224299 (1980-09-01), Barber et al.
G. P. Eschenbrenner and G. A. Wagner, "A New High Capacity Ammonia Converter", vol. 14, Ammonia Plant Safety, pp. 51-56, (Chem. Eng. Progr. Techn. Manual, AICHE, 1972).

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