Method for pre-heating combustion air and for catalytically redu

Details Method for pre-heating combustion air and for catalytically redu Method for pre-heating combustion air and for catalytically redu

1986-10-16

1988-07-12

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423235, 423244, B01J 800, C01B 2100

Patent

active

047568917

ABSTRACT:
An apparatus and a method of pre-heating combustion air and catalytically reducing noxious substances in flue gas employing a two-part heat-exchanger which is traversed from top to bottom by a plurality of catalytically active separately movable heat-storage elements are described. The combustion gas is heated in a first portion of the heat-exchanger by heat transferred from the heat-storage elements and the noxious gases are catalytically reduced in a second portion of the heat-exchanger downstream from the first portion in the path of the elements in the presence of ammonia and catalytically active heat-storage elements. The catalyst-coated heat-storage elements can be removed from circulation and replaced by unspent or regenerated elements when the residual content of noxious substances in the flue gas remains elevated.

REFERENCES:
patent: 4602673 (1986-07-01), Michelfelder et al.

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