Cement, Energy and Environment

13 Feeding / Dosing Methods: • Pre-processing and Size Reduction: Some AFRs, especially municipal waste (RDF) must undergo size reduction or shredding before being fed into the kiln system. The define size aremaintain for ensuring proper burning inside kiln system ( Pre-Calciner inlet ) • Mechanical Conveying: After size reduction, all that product materials store in storage and then from there all material conveying through long conveyer belt to feeding point • Feeding Control: All feed materials coming from weigh feeder to feeding / dosing point through belt conveyor system. These feeding materials are controlled through double pneumatic gate through flap valve in specific time interval. • Safety Interlocking : 1. Auto MV Water Spray System for Belt Conveyor & Cable cellar Fig:1 Separation of stone & iron Fig:2 Shredding machine 2. Auto Water Curtain System 3. Auto Sprinkler System • Apart from this process safety PID interlocking also provided as follows, 1. AFR Feeding trip if PC Coal firing , PH fan trip 2. If PC CO reach 2500 PPM then AFR dosing reduced to 5 TPH Benefits of Using AFRs in Cement Kilns: • Simultaneous energy recovery and safe disposal of municipal solid waste, hazardous and non-hazardous solid waste, bio mass and agricultural waste, expired FMCG products and ETP & sewage sludge. • Replacing the fossil fuel energy with energy from the waste streams. • Reduction of GHG emissions of cement manufacturing and waste disposal. • Avoidance of environment, health and safety hazards due to landfills • EPR Compliance • GHG Emissions intensity reduction to comply with BEE CO2 intensity reduction targets and aligning with the net zero ambition. AFR Laboratory As of now no special lab available for solid AFR system, however we are testing the Solid AFR in our existing Liquid AFR lab. The following parameters are tested in AFR Laboratory • Moisture • Chloride • Ash • NCV Operational problems faced during enhancing TSR and overcoming the problems • More dosing’s solid AFR leads to high CO formation (Higher dosing quantity of AFR yet not experienced due to low kiln run day) • handling high moisture variation in solid AFR is the most challenging and difficult to control the operation