Apparatus and method for photocatalytic conditioning of flue gas

Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Solid component

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4232421, 423532, 95 57, 96 16, 2041573, 20415749, B01J 800, B01J 1912

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059355387

ABSTRACT:
A process is provided for conditioning fly-ash present in flue gas which also contains sulfur dioxide and steam by subjecting the fly-ash containing flue gas to ultraviolet radiation so as to convert steam present in the flue gas into hydroxyl radicals which oxidizes about 5 to 10 percent of the sulfur dioxide in the flue gas into sulfur trioxide. This photo-produced sulfur trioxide conditions the fly-ash and renders it more easily separated in the electrostatic precipitator.

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