# A heater burns normal butane ( -C H ) using 40.0 percent excess air. Combustion is complete. The flue gas leaves the stack at a pressure of 100 kPa and

A heater burns normal butane ( -C H ) using 40.0 percent excess air. Combustion is complete. The flue gas leaves the stack at a pressure of 100 kPa and a temperature of 260 C. a) Calculate the complete flue gas analysis. b) is the volume of the flue gas in cubic meter per kg mol of -butane? An incinerator produces a dry exit gas of the following Orsat composition measured at 60 F and 30 inches of Hg absolute: 4.0% CO , 26.0% CO, 2.0% CH , 16.0%H and 52.0% N . A dry natural gas of the following (Orsat) composition: 80.5% CH , 17.8% C H , and 1.7%N is used at the rate of 1200ft /min at 60 F and 30 inches of Hg absolute to burn the incineration off gas with air. The final products of combustion analyze on a dry basis: 12.2% CO , 0.7% CO, 2.4% O , and 84.7%N . Calculate (a) the rate of flow in ft /min of the incinerator exit gas at 60 F and 30 inches of Hg absolute on a dry basis, and (b) the rate of air flow in ft /min, dry, at 80 F and 29.6 inches of Hg absolute. Compute the mass of wet air required (theoretically) to burn 1 lb. of coal having the following composition: Carbon = 66.10% Hydrogen = 6.03% Oxygen = 11.91% Nitrogen = 1.04% Sulfur = 2.40% Ash = 12.52% would be the analysis of the dry flue gases produced? If 20% excess air were supplied for combustion of this coal, and the coal was burned at a rate of 3 tons/hr., compute the required capacity of the fan (actual ft ) to supply the combustion air. Assume the air to be at a pressure of 14.7 psi and temperature of 86 F. Assume that the air at 86 F contains 0.013lb of moisture per lb of dry air.

## Leave a Reply

Want to join the discussion?Feel free to contribute!