Heat exchange – Regenerator – Checker brick structure
Patent
1989-11-08
1991-08-06
Flanigan, Allen J.
Heat exchange
Regenerator
Checker brick structure
165111, 165133, 165905, 165921, F28F 1902
Patent
active
050369032
ABSTRACT:
The present invention is directed to a method for recovering heat from a gas stream contaminated with water vapor and an acid-forming moiety, said gas having an acid dew point ranging from about 200.degree. F. to 300.degree. F. and a water dew point ranging from about 90.20 F. to 150.degree. F. The inventive method comprises passing the gas stream through a heat exchange fitted with a plurality of generally-parallel tubes through which flow heat exchanging fluid counter-current to the flow of said gas stream in said heat exchanger. The heat exchanging fluid is at a temperature such that the exterior tube temperature is at or below both said dew points, or the temperature of the contaminated gas stream exiting the heat exchanger is at or below both said dew points. The tubes are formed from acid-resistant, resin-impregnated graphite and exhibit a smooth, washable exterior surface. The heat exchanger further is fitted with a pair of side apertured tube sheets through which said tubes penetrate. The ends of the tubes penetrating through the tube sheets are interconnected with non-graphite connectors for establishing a flow path of heat exchange fluid therethrough. The tube sheets house an interior heat-exchange chamber therebetween through which said contaminated gas stream flows.
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patent: 4488342 (1984-12-01), Daugiorda
patent: 4669530 (1987-06-01), Warner
Flanigan Allen J.
United McGill Corporation
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