Furnaces – Process – Treating fuel constituent or combustion product
Patent
1999-07-30
2000-11-28
Wilson, Pamela
Furnaces
Process
Treating fuel constituent or combustion product
110190, 110233, F23N 502, F23R 700, F23J 1100
Patent
active
061520535
ABSTRACT:
A method and an assembly for efficiently converting waste water to a gaseous state in a fossil fuel-fired power generation system is provided. The method includes feeding the slurry to the spray dryer reactor, the slurry having a predetermined ratio of liquid to absorbent, and controlling the feed rate of the slurry into the spray dryer reactor as a function of the monitored sulfur oxide level such that the sulfur oxide level is maintained within an acceptable range. The method also includes supplying supplemental liquid in the form of waste water into the spray dryer reactor in a non-proportionate manner relative to the feed of absorbent into the spray dryer reactor such that the ratio of liquid to absorbent in the spray dryer reactor changes. Both the supply rate of supplemental liquid into the spray dryer reactor and the temperature of the flue gas entering the spray dryer reactor are controlled in dependence upon the temperature of the flue gas exiting the spray dryer reactor such that, in the event that the sensed temperature of the flue gas exiting the spray dryer reactor is below a minimum acceptable flue gas exit temperature, the supply rate of supplemental liquid is controlled according to a prescribed manner.
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Czarnecki Thomas S.
Friedrichs Gustave E.
Grabowski Douglas F.
Tanca Michael C.
ABB Alstom Power Inc.
Rinehart Ken B.
Warnock Russell W.
Wilson Pamela
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