Reducing hydrochloric acid in cement kilns
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United States of America Patent
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Aug 1, 2017
Grant Date -
Jan 21, 2016
app pub date -
Sep 30, 2015
filing date -
Apr 1, 2013
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Abstract
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 gases are discharged from the defined zone following sufficient reaction time to reduce the HCl concentration in the gases.
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