Cement Energy Environment

59 A typical model for reduction in CO 2 can be understood by following case Plant Particulars for Pyrorotor Realized Figures Thermal Substitution Alternative Fuel at Calciner > 85% Mass Flow Of Alternative Fuel ~ 20 t/h Physical Properties Of Alternative Fuel 3D Material @ 300mm Clinker Production ~ 6700 tpd Temperature At Pyrorotor Inlet 850°C - 950°C Temperature At Pyrorotor Outlet ~ 1100°C Fuel Split at Kiln & PC 38:62 % Fuel CV & Fixed carbon of main fuel (Coal) 5500 Kcal/Kg, C-67% Saving in CO 2 Emission Considering 85% replacement of calciner fuel with materials like Municipal/ Plastics/Biomass (Considering nil CO 2 contribution for recyclable/waste material used as AFR due to fossil fuel replacement) 0.158 mt CO 2 /mt cl ~ 349338 t/annum CO 2 At present average TSR in Indian cement industry is about 4% which is targeted to be about 25% by year 2025. World average TSR is 19% and Indian Cement Industry needs to take rapid steps in this area. Industry can used about 7-8 million tons of plastic waste and about 30 million tons of municipal waste. Some plants has started using municipal waste, like ACC-Wadi, UTCL (Vikram Cement) etc. Plastic waste utilization is expected to gain momentum with industry commitment to government for resolving the problem of dispersing off all inert plastic by 2023. Every 1% TSR equal to 2-3 kg reduction of CO 2 , therefore increasing TSR substitution from 4% to 25% in coming 5 years can reduce carbon footprint by 1.6 MTPA in Indian cement industry as a whole. Table 4 below gives a glimpse of the future potential of different types of alternate fuels. S. No Waste Streams % Share on AF % Share on Thermal Energy 1 RDF & Plastic Waste 57.07 14.27 2 Spent Pot Lining 0.81 0.20 3 Biomass 33.97 8.49 4 Hazardous waste 3.46 0.87 5 Tyre Waste 7.33 1.83 Total _ _ 25.66