Method and apparatus for exhaust gas stream scrubbing

Details Method and apparatus for exhaust gas stream scrubbing Method and apparatus for exhaust gas stream scrubbing

B - Operations, Transporting

01

D

23/347, 23/387

B01D 53/14 (2006.01) B01D 53/18 (2006.01) B01D 53/60 (2006.01) C04B 7/60 (2006.01)

Patent

CA 1240122

Abstract of the Disclosure Method and system for scrubbing exhaust gas stream from a wet process cement plant wherein a supply of alkaline water and a supply of compressed air are delivered to spray nozzles which are located within the existing exhaust stream ducting. The alkali water is sprayed as a finely divided mist into the duct where it rapidly reacts with the oxides of sulfur and nitrogen present in the exhaust gas. The water, being in the form of very small droplets, and having small volume and large surface area to water volume ratio, rapidly evaporates. The water, therefore, does not cause a problem of wetting and clogging of the ducting and the oxides of sulfur and nitrogen are converted to dry solid particu- lates which are removed by normal dust collection systems down- stream of the scrubber.

521819

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