Reference no: EM13694
The SO2 concentration in a stack is 400 ppm, the stack diameter is 10 ft, and the stack gas velocity is 50 ft/sec. The gas temperature and pressure are 350 F and 1 atm.
Calculate the approximate SO2 mass emission in lb/day.
A cyclone is designed with an inlet width (W) of 12.0 cm and has four effective turns. The inlet gas velocity is 15.0 m/s and the particle density is 1.70 g/cm3.
(a) Estimate the particle size that will be collected with 50 % efficiency.
Assume the carrier gas is air at T= 77 ?C and P = 1 atm. (b) Looking at the graph of collection efficiency vs. particle size ratio, estimate what size particle would be removed at 90% efficiency in this cyclone.
3)A 600 MW coal-fired power plant has an overall thermal efficiency of 38%. It is burning coal that has a heating value of 12,000 Btu/lb, an ash content of 5 %, a sulfur content of 3.0 %, and a CO2 emission factor of 220 lb/million Btu. Calculate the heat emitted to the environment (Btu/sec), the coal feed rate (tons/day), the degree (%) of sulfur dioxide control needed to meet current SO2 emission standards, and the CO2 emission rate (metric tons/day).
4) Assume that the NO2 concentration in a house with a gas stove is 150 ?g/m3. What is the equivalent concentration in ppm at STP