Duane C. Neverman - La Habra CA
A process to remove SOX and NOX from combustion exhaust gases includes the steps:
(a) employing a coolant for cooling a stream of the exhaust gas to a temperature below the dew point, whereby contained moisture condenses, and SOX and NOX dissolve in the condensate to form acidic liquid in the cooled gaseous stream,
(b) scrubbing the stream of cooled gas and acidic liquid with an alkaline solution thereby to neutralize the acid in said stream and form salts dissolved in the said solution,
(c) and extracting energy from the coolant which is heated during said (a) step.