Low NOX cogeneration process

Details Low NOX cogeneration process Low NOX cogeneration process

1988-10-03

1990-06-26

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

60 3907, 60 3952, 60723, F02C 334

Patent

active

049360884

ABSTRACT:
A process for low NOX cogeneration to produce electricity and heat which involves combusting fuel to produce a gaseous stream of combustion products, passing the gaseous stream through a turbine to generate electricity, and to produce a gaseous exhaust stream, adding additional fuel to the exhaust stream, to provide a fuel-rich gas stream having fuel in excess of the oxygen in the combustible gas stream, treating the fuel-rich gas stream in a reducing atmosphere to produce a heated oxygen-depleted gaseous stream, converting at least a portion of the heat in the oxygen depleted stream into steam, adding air to the oxygen-depleted stream to produce a stoichiometric excess of oxygen in the resultant stream relative to fuel present in the resultant stream, passing the resultant stream over an oxidizing catalyst to produce an oxidized gaseous stream, removing heat from the oxidized stream, and venting the resultant cooled stream, the process further providing for cycling to the combusting step at least some of the oxidized gaseous stream. An apparatus system for carrying out this process is also provided.

REFERENCES:
patent: 4204401 (1980-05-01), Earnest
patent: 4257223 (1981-03-01), Enga
patent: 4375949 (1983-03-01), Salooja
patent: 4405587 (1983-09-01), McGill et al.
patent: 4459126 (1984-07-01), Krill et al.
patent: 4572110 (1986-02-01), Haeflich
patent: 4594850 (1986-06-01), Joy

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