The cement industry faces unique environmental challenges for the clinker burning process. Cement kiln facility regulated emissions include potentially high inlet SO2,abrasive particulate and traces of metal. This creates a challenging application for wet gas scrubbers, which must take into consideration possible corrosion, erosion and plugging.
The major environmental problem to address is SO2 emissions control from the pre-heater exhaust or directly from the kiln. This results in the formation of SO2. The exhaust from the pre-heater contains this SO2 as well as abrasive dust (particulate) from the raw materials. If SO2 is released into the atmosphere, it will react with atmospheric water vapor to form H2SO4 and produce acid rain.