US 2016/0016113 A1

Reducing hydrochloric acid in cement kilns

(22) 30.09.2015

(43) 21.01.2016

(57) The description relates to reducing hydrochloric acid in cement kilns. In one aspect, an aqueous copper-based chlo­ride remediator is introduced into contact with combustion gases from a cement kiln. Injection is made into a defined introduction zone under conditions effective for HCl emis­sions control wherein the temperature is within the range of from 300° F. to 800° F., preferably from 550° F. to 750° F. The resulting d gases are discharged from the defined zone fol­lowing sufficient reaction time to reduce the HCl concentra­tion in the gases.

(71) Fuel Tech, Inc., Warrenville, IL (US)

(73) Fuel Tech, Inc., Warrenville, IL (US)

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