Wet process flue gas desulfurization apparatus

Details Wet process flue gas desulfurization apparatus Wet process flue gas desulfurization apparatus

1995-08-01

1997-04-15

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

422169, 422172, 422225, 422231, 422234, 4232421, 42324303, 423555, 55228, 210400, B01D 5000, C01B 1700, C01F 1146

Patent

active

056206674

ABSTRACT:
The invention discloses a wet process flue gas desulfurization apparatus and method for use with a tank oxidation system. The apparatus comprises: an absorption tower having a slurry containing a calcium compound which is supplied to the bottom tank, a circulation pump for feeding the slurry in the tank into a flue gas inlet in an upper part of the absorption tank to be in contact with flue gas, and air feed means for feeding air for oxidizing into the tank, thereby absorbing and oxidizing sulfur dioxide in the flue gas by the slurry to obtain gypsum as a byproduct, wherein a vacuum type belt filter is disposed along an outer surface of a side wall of the absorption tower, and part of the slurry that is discharged from the circulation pump is led into the belt filter to be dehydrated, thereby separating and recovering gypsum.

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patent: 4627970 (1986-12-01), Kr uger
patent: 4976936 (1990-12-01), Rathi et al.
patent: 5019258 (1991-05-01), Pierson
patent: 5266286 (1993-11-01), Ukawa et al.
patent: 5397549 (1995-03-01), Newman

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