Method for the denitration of exhaust gas

Details Method for the denitration of exhaust gas Method for the denitration of exhaust gas

1994-07-29

1996-04-09

Lewis, Michael

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Mixture is exhaust from internal-combustion engine

4232137, 4232391, 423405, B01J 802

Patent

active

055059198

ABSTRACT:
A method for the denitration of exhaust gas from a gas turbine or an internal combustion engine which comprises (a) reducing a part of the NO.sub.2 constituting NO.sub.x contained in the exhaust gas to NO by means of a reduction catalyst bed for reducing NO.sub.2 to NO, the reduction catalyst bed being installed in flow communication with the exhaust gas outlet of the gas turbine or internal combustion engine, and (b) injecting NH.sub.3 into the exhaust gas within an exhaust heat recovery unit and then decomposing and removing NO.sub.x contained in the exhaust gas and now composed chiefly of NO, by means a denitration catalyst bed installed within the exhaust heat recovery unit to effect the catalytic reduction of NO.sub.x with NH.sub.3.

REFERENCES:
patent: 3919397 (1975-11-01), Gould
Unit Processes and Principiles of Chemical Engineering, Olsen, Jul. 5, 1932 pp. 1-3.

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