Wet flue gas desulfurization apparatus

Details Wet flue gas desulfurization apparatus Wet flue gas desulfurization apparatus

1996-06-19

1998-06-09

Tran, Hien

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

422169, 422170, 422171, 422172, 422224, 422225, 422234, 55228, 55229, 55247, B01D 5334

Patent

active

057628831

ABSTRACT:
This invention relates to a wet flue gas desulfurization apparatus including: an absorption tower having defined in the lower part thereof a tank for holding a calcium compound-containing slurry fed thereto; a circulating pump for delivering the slurry within the tank to the upper part of the absorption tower in order to bring it into contact with flue gas; air supply member for supplying air to the tank for purposes of oxidation; a withdrawal pump for withdrawing the slurry within the tank in order to recover gypsum formed as a by-product or discharge waste water; falling slurry withdrawal member for withdrawing part of the slurry delivered to the upper part of the absorption tower by the circulating pump and falling through the absorption tower at a position above the liquid surface of the tank; and mixing member for the slurry withdrawn by the falling slurry withdrawal member with the slurry withdrawn from the tank by the withdrawal pump, whereby oxidizing substances produced in the tank of the absorption tower can be decreased by reduction.

REFERENCES:
patent: 4696804 (1987-09-01), Shinoda et al.
Patent Abstracts of Japan, vol. 016, No. 234 (C-0945)--JP 04 048916.

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