Catalytic sulfur trioxide flue gas conditioning
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United States of America Patent
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Jun 11, 1996
Grant Date -
N/A
app pub date -
Dec 5, 1994
filing date -
Dec 5, 1994
priority date (Note) -
Expired
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Abstract
A method and apparatus for the selective control of the sulfur trioxide concentration in flue gases, to enhance the ash removal efficiency of electrostatic precipitators, which includes supporting a catalyst in the path of the flue gas, catalytically converting a portion of the sulfur dioxide contained within such flue gas to sulfur trioxide, by passing at portion of such flue gases over a catalyst which is positioned within the path; selectively varying the amount of sulfur trioxide produced by the catalytically converting, by selectively changing the quantity of flue gas flowing through such catalyst; and simultaneously maintaining the ratio of the pressure loss coefficient of the flue gas flowing through the other portion of such duct, in the vicinity of such catalyst, within a predetermined range.
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