Flue gas desulfurization

Details Flue gas desulfurization Flue gas desulfurization

B - Operations, Transporting

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J

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B01J 12/02 (2006.01) B01D 53/10 (2006.01) B01D 53/50 (2006.01) C01D 5/02 (2006.01) F23J 7/00 (2006.01) F23J 15/02 (2006.01)

Patent

CA 1224015

ABSTRACT A process and apparatus for removing sulfur oxide from combustion gas to form Na2SO4 and for reducing the harmful effects of Na2SO4 on auxiliary heat exchangers in which a sodium compound is injected into the hot combustion gas forming liquid Na2SO4 in a gas-gas reaction and the resultant gas containing Na2SO4 is cooled to below about 1150°K to form particles of Na2SO4 prior to contact with at least one heat exchanger with the cooling being provided by the recycling of combustion gas from a cooled zone downstream from the introduction of the cooling gas.

479829

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