DESIGN OF LCU FOR REVERSE AIR BAG HOUSE IN CEMENT INDUSTRY

Abstract

The term LCU refers to the Local Control Unit. Cement industry may contribute significantly to the air pollution level in the vicinity of the industry. Large quantities of pulverized material are handled and the main air pollution is emission of dust. Dust is generated at all stages in cement manufacturing process from quarrying through crushing, homogenizing, burning, handling and storing to the final distribution. Reverse Air Bag House (RABH) is used to control industrial particulate pollutants. The term bag house refers to a filtration technology that uses cloth or synthetic filters for the dust collection. It consists of several bags inside it above the hopper. Dust particles from the raw mill, pre-heater are fed to this reverse air bag house section. The bag filter filters the dust outside of the bag. On cleaning the fine dust particles, it falls into the hopper and stores on the silo. Hence 99% of the fresh air is exhausted outside. The proposed system will automate the Reverse Air Bag House unit separately using PLC and SCADA.