The limestone scrubber operates with an efficiency of 90

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Reference no: EM13640949

A 1000 MW coal fired power plant operates with an annual plant capacity factor equal to 75%. The plant burns coal which has a heating value of 12,000 Btu/lbm. The average ash content is 8% by mass, and the average sulfur content of 2% by mass. The overall heat rate of the plant is 9000 Btu/kWh. The limestone scrubber operates with an efficiency of 90%, and the ESP operates with an efficiency of 95%. (a.) estimate the quantity of coal burned in one year, in short tons ( 1 ton = 2000 lbm). (b.) taking the answer from part (a.) as 2.0 x 106 ton, estimate the amount of dry waste product formed in the FGD system and in the ESP. Assume that the overall reaction is CaCO3 + SO2 + 2H2O => CaSO3 . 2H2O + CO2. and that the dry waste product from the scrubber is 70% CaSO3 . 2H2O and 30% CaCO3, by mass. (MCa = 40, Ms = 32). Assume that 10% of the ash falls to the bottom of the furnace, and the remainder is carried via the gas stream to the ESP.

Reference no: EM13640949

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