Process for the generation of mechanical energy in the ammonia o

Details Process for the generation of mechanical energy in the ammonia o Process for the generation of mechanical energy in the ammonia o

1990-01-31

1990-09-18

Stoll, Richard L.

Chemistry of inorganic compounds

Nitrogen or compound thereof

Oxygen containing

423393, 423403, C01B 2126, C01B 2140

Patent

active

049577204

ABSTRACT:
A process for the generation of mechanical energy in the ammonia oxidation step of process for the production of nitric acid is disclosed, whereby the utilization of process heat is improved, particularly the exploitation of heat contained in NO.sub.x gases and including process heat recovered at low temperature. The process involves evaporating and superheating liquid ammonia upstream of the oxidation step, at a pressure which is a multiple of the pressure required for the combustion, using the process heat of the NO.sub.x gases formed during the the combustion and then expanding the superheated ammonia in a turbine, thus generating mechanical energy.

REFERENCES:
patent: 1954317 (1934-04-01), Hobler
patent: 2031215 (1936-02-01), Hobler
patent: 3441380 (1969-04-01), Morrow
patent: 3450498 (1969-06-01), Sales

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