Clear liquor scrubbing of sulfur dioxide with forced oxidation i

Details Clear liquor scrubbing of sulfur dioxide with forced oxidation i Clear liquor scrubbing of sulfur dioxide with forced oxidation i

1994-06-13

1996-01-23

Lander, Ferris

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

42324305, 42324308, 42324312, B01D 5350

Patent

active

054863422

ABSTRACT:
A flue gas desulfurization process and system employing a clear scrubbing liquor and an organic acid buffer conducted under forced oxidation conditions to produce a usable gypsum by-product without scrubber scaling and abrasion is provided. Calcium ion concentration and chloride concentration are suppressed to improve limestone utilization, reduce the consumption of organic acids and improve crystal growth. The FGD system includes a limestone reactor for precipitating gypsum separate from the scrubber system which allows the recovery of pure carbon dioxide and a clarifier/softener tank which allows the production of gypsum-free clear scrubbing liquor and a drier gypsum filter cake.

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patent: 5260045 (1993-11-01), Moser et al.

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