Removal and recovery of sulfur dioxide from stack gases

Details Removal and recovery of sulfur dioxide from stack gases Removal and recovery of sulfur dioxide from stack gases

1977-11-28

1979-05-08

Yudkoff, Norman

Refrigeration

Processes

Circulating external gas

62 23, F25J 300

Patent

active

041534379

ABSTRACT:
An improved method and apparatus for the removal and recovery of sulfur dioxide and water vapor from gaseous effluent is disclosed. Sulfur dioxide and water vapor entrained in stack gases, emanated upon combustion of sulfur-bearing materials, are selectively liquefied under the combined influence of a reduction in temperature to about 1.degree. C. and an increase in pressure in the range of 2 inches of water gauge [WG] to about 100 psig of the gaseous effluent. System efficiency is enhanced through proper routing of effluent gases and condensate and the incorporation of a condensate spray curtain.

REFERENCES:
patent: 4078390 (1978-03-01), Duvall

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