Patent ID: 8765066

Claim:
A device for processing cement kiln combustion exhaust gas comprising: a dust collector configured to collect dust in cement kiln combustion exhaust gas; a catalyst-poisoning-substance stripper configured to remove a catalyst-poisoning substance and mercury from the cement kiln combustion exhaust gas that passed said dust collector by adding sodium hypochlorite to said cement kiln combustion exhaust gas; a heater downstream of the catalyst-poisoning-substance stripper and configured to heat the cement kiln combustion exhaust gas that passed said catalyst poisoning substance stripper; a catalyst device configured to remove at least one member selected from the group consisting of a volatile organic compound, carbon monoxide, a persistent organic pollutant, hydrocarbon and an offensive odor substance in the cement kiln combustion exhaust gas heated by said heater; and a mercury adsorbing tower which adsorbs mercury in liquid exhausted from the catalyst-poisoning substance stripper, the mercury adsorbing tower producing wastewater, wherein a portion of the wastewater is used to generate sodium hypochlorite.