Question

A coal-fired power plant (PP) has a rated power of 1000 MWe. It works at 100% capacity (base-loaded) at a thermal efficiency of 35%. It burns coal having a heating value of 30 MJ/kg and a sulfur content of 2% by weight, a nitrogen content of 1% by weight, and a mineral (ash) content of 10% by weight. b) How much coal does the PP consume per year (ton/yr) ? 3*106 tons/yr c) How much SO2 does the PP emit per year (ton/yr)? 120 000 tons/yr d) How much NO2 does the PP emit per year (ton /yr), assuming “thermal” NO2 formation doubles the rate of “fuel” NO2 emissions? (Note that NO2 has 3.28 times the molecular weight of N). 196 800 tons/year Total NO2 emission= Thermal NO2 emission+ Fuel NO2 emission = 2*Fuel NO2 emission e) How much fly ash does the PP emit per year (ton/yr)? Assume all mineral content is emitted as fly ash. 300 000 tons /yr

Answer 1