Chemistry of inorganic compounds – Nitrogen or compound thereof – Ammonia or ammonium hydroxide
Patent
1987-11-12
1989-09-19
Doll, John
Chemistry of inorganic compounds
Nitrogen or compound thereof
Ammonia or ammonium hydroxide
423361, C01C 104
Patent
active
048679593
ABSTRACT:
Means are disclosed for lowering the temperature of the gaseous effluent from the first catalyst bed in a continuous ammonia synthesis process in which a syngas mixture containing nitrogen and hydrogen is passed sequentially over two or more catalyst beds containing ammonia synthesis catalyst. This cooling, effected to promote the exothermic ammonia-forming reaction, is accomplished by subjecting the gaseous effluent from the first catalyst bed to heat exchange in a high temperature heat sink, preferably after having undergone heat exchange with the synthesis gas feed to the first catalyst bed, to control the temperature of the effluent entering the second catalyst bed to a desired level.
REFERENCES:
patent: 4510123 (1985-04-01), Grotz
patent: 4624842 (1986-11-01), Grotz
patent: 4744966 (1988-05-01), Grotz
Forster, "Improved Reactor Design for Ammonia Synthesis", Chemical Engineering, Sep. 8, 1980, pp. 62, 63.
Doll John
Langel Wayne A.
Santa Fe Braun Inc.
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