Removal of sulphur and nitrogen oxides from flue gases

Details Removal of sulphur and nitrogen oxides from flue gases Removal of sulphur and nitrogen oxides from flue gases

1991-07-16

1993-03-30

Straub, Gary P.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

42324301, 42324305, 423512R, 423522, 423545, 165921, 55 73, C01B 2100, C01B 1700, C01B 1769

Patent

active

051982013

ABSTRACT:
A method and apparatus are disclosed for removing pollutants, especially oxides of sulphur and nitrogen, from boiler plant flue gases. A series of heat exchange steps cool the gas and condense acidic condensates. SO.sub.3 is removed by condensation, and SO.sub.2 is removed by either extraction or a combination of oxidation and condensation.

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