Method for removing impurities accumulated in a scrubbing fluid

Details Method for removing impurities accumulated in a scrubbing fluid Method for removing impurities accumulated in a scrubbing fluid

2008-04-01

2008-04-01

Vanoy, Timothy C. (Department: 1793)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

C423S243080, C423S243090, C423S243100, C423S555000, C210S198100, C210S600000, C210S767000

Reexamination Certificate

active

10570321

ABSTRACT:
A method for removing impurities accumulated in a scrubbing fluid in a flue gas scrubber and effluents from the scrubber. The flue gases are scrubbed with a scrubbing fluid that includes a calcium-containing absorbent. The scrubbing fluid containing gypsum and other impurities and produced in the scrubber is discharged from the scrubber. The gypsum is separated from the scrubbing fluid. To the scrubbing fluid is added an auxiliary agent, by the effect of which the impurities accumulated in the scrubbing fluid are removed with the gypsum and the moisture content of the gypsum to be separated from the scrubbing fluid is increased.

REFERENCES:
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patent: 4869885 (1989-09-01), Lin et al.
patent: 4891195 (1990-01-01), Lin
patent: 7037434 (2006-05-01), Myers et al.
patent: 6-256015 (1994-09-01), None
patent: WO 8705530 (1987-09-01), None
Roger Grant et al. (editors) “Grant and Hackh's Chemical Dictionary” 5th Ed., (1987) McGraw-Hill Book Co. USA, ISBN 0-07-024067-1, p. 178.

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