Wet flue gas desulfurization process and system

Details Wet flue gas desulfurization process and system Wet flue gas desulfurization process and system

1997-08-06

1999-05-11

Straub, Gary P.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

210151, 210188, 210402, 210526, 422273, 42324301, 42324308, B01D53/34

Patent

active

059025557

ABSTRACT:
A wet flue gas desulfurization process wherein sulfur dioxide present in flue gas is absorbed into a slurry containing a calcium compound, the slurry having sulfur dioxide absorbed therein is oxidized to form a gypsum slurry, and gypsum is separated and recovered from the gypsum slurry, which comprises the steps of dipping a part of a circulating filtering surface of a suction filter into the gypsum slurry so as to cause gypsum to adhere the filtering surface, carrying the gypsum-bearing filtering surface above the surface of the gypsum slurry, sucking out the liquid phase through the filtering surface to form a dehydrated gypsum layer thereon, and removing the gypsum layer from the filtering surface, as well as an apparatus for carrying out this process.

REFERENCES:
patent: 3985860 (1976-10-01), Mandelik et al.
patent: 5397549 (1995-03-01), Newman
patent: 5662794 (1997-09-01), Okazoe et al.

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