Patent ID: 8961654
Filing Date: 2015-02-24
Classification: B01D,C04B

Abstract:
1. A method for reducing emissions of mercury from a cement plant, the cement plant comprising at least a kiln, a particulate collection device, a heater, and a mercury scrubber, wherein the heater is upstream from the kiln and the mercury scrubber is downstream from the heater, the cement plant having therein collected particulates and an exhaust gas stream, which method comprises directing the collected particulates and the exhaust gas stream through the heater, to form volatilized mercury species in the exhaust gas stream from the collected particulates; directing the collected particulates from the heater downstream toward the kiln; directing the exhaust gas stream containing the volatilized mercury species to the mercury scrubber, directing the exhaust gas stream from the mercury scrubber to a particulate collection device, and directing the exhaust gas stream to exit the particulate collection device and not into the heater.