REDUCED MERCURY EMISSIONS AT CEMENT PLANTS

摘要

1. A method for reducing mercury emissions in a cement plant comprising at least a kiln, a particulate collection device, a heater and a mercury scrubber, wherein the heater is located in the production line to the kiln and the scrubber is located after the heater; and wherein the cement plant contains collected particulate matter and an exhaust gas stream; including passing collected solids through a heater to evaporate mercury from the collected solids; feeding collected particles from the heater further down the line to the kiln; and the supply of the received mercury vapor to the mercury scrubber, while the exhaust gas stream exits the particulate collection device and is not directed to the heater. 2. A method for reducing mercury emissions in a cement plant comprising at least a kiln and a particulate collection device; at the same time, the cement plant contains collected solid particles and an exhaust gas stream, including the placement of the heater in the production line to the furnace so that the collected solid particles pass through the heater and further along the production line to the kiln; placement of a mercury scrubber in the production line after the heater so that vapors of mercury vaporized from the collected solid particles can enter the scrubber from the heater; passing the collected solid particles through the evaporation heater mercury from the collected solid particles; feeding the collected particles from the heater further down the line to the kiln; the supply of the received mercury vapor to the mercury scrubber, while the exhaust gas stream exits the particulate collection device and does not direct