Combined catalytic baghouse and heat pipe air heater

Details Combined catalytic baghouse and heat pipe air heater Combined catalytic baghouse and heat pipe air heater

1989-03-10

1990-05-15

Kratz, Peter

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

422173, 422177, B01J 802

Patent

active

049256335

ABSTRACT:
An apparatus for controlling emissions of a coal fired boiler includes a hot catalytic baghouse for receiving flue gases along with injected ammonia and alkali. The alkali and ammonia react with SO.sub.x and NO.sub.x in the flue gas while particulates in the flue gas are trapped in the baghouse. The still hot but clean flue gases are supplied from the baghouse to a heat pipe air heater which also receives combustion air to be preheated before it is supplied to the boiler for combustion with coal to produce the flue gases.

REFERENCES:
patent: 4309386 (1982-01-01), Pirsh
patent: 4324570 (1982-04-01), Pforr et al.
patent: 4434147 (1984-04-01), Dimpfl et al.
patent: 4602673 (1986-07-01), Michelfelder et al.
patent: 4783325 (1988-11-01), Jones
patent: 4793981 (1988-12-01), Doyle et al.

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