Compute the effective stack height of a coal burning power plant with physical stack height of 200 m and stack diameter of 0.8 m, stack gas exit velocity of 18.3 m/sec, temperature of gas 140°C, when the ambient air temperature is 8°C, atmospheric pressure is 1000 millibars and average wind speed is 4.5 m/sec. Also compute the emission rate of sulphur dioxide of the plant assuming burning of 24,000 tonnes of coal per day with a sulphur content of 4.2%.

Compute the effective stack height of a coal burning power plant with physical stack height of 200 m and stack diameter of 0.8 m, stack gas exit velocity of 18.3 m/sec, temperature of gas 140°C, when the ambient air temperature is 8°C, atmospheric pressure is 1000 millibars and average wind speed is 4.5 m/sec. Also compute the emission rate of sulphur dioxide of the plant assuming burning of 24,000 tonnes of coal per day with a sulphur content of 4.2%.

Solid Waste Engineering

3rd Edition

ISBN:9781305635203

Author:Worrell, William A.

Publisher:Worrell, William A.

Chapter7: Thermal Processes

Section: Chapter Questions

Problem 7.1P

See similar textbooks

Similar questions

As a plant maintenance engineer, you are required to purchase a 3,000 L tank of liquid butane to heat a maintenance building during the winter. You are concerned about the tank rupture and the possibility of a vapour cloud explosion of all the butane. How far (in metres) must the tank be from the maintenance building to ensure that it will receive only partial demolition in the event of an explosion? The specific gravity of liquid butane is 0.6, and the energy of explosion for butane is 510 kcal/gm-mol. Assume the explosion efficiency is 10 % in this case.
A steel pipe is having an ID of 13.25" is to be designed to carry 48,000 bbl of oil per day from a midcontinent field refinery 580 miles from the source. The difference in elevation on the two ends of the line is negligible. AT an average temperature involved, the oil has an absolute viscosity of 50 cP and a specific gravity of 0.87. Determine the actual power requirement (in hp) if the efficiency is 65%.
A thermoelectric project has the following characteristics: :- outflow of gases 15 m3/s- gas exit velocity of 5.5 m/s- gas outlet temperature 170oC.What is the geometric height of the chimney that must be built in order to have an effective plume height of approximately 157 m?Environmental data:Average temperatures = 30oCatmospheric pressure = 0.91atm (1 atm = 1013.25mbar), average prevailing wind speeds = 2.5m/s (measured at 10m).
A smokestack emits pollutant Z into the air on a sunny day. The effective stack height is 270 m. The wind speed is 4 m/s, due east. Your house is located 4.0 km due east of the smokestack. The ground level concentration of pollutant A is 2.0 mg/m3at your house. Your friend lives 4.0 km east and 1.5 km south of the smokestack. a. What is the emission rate of the pollutant in kg/s? b. For the emission rate determined in part a, you now want to know the concentration of pollutant Z at ground level at your friend’s house. i. What parameters change in the dispersion modeling equation? For each parameter, include the parameter symbol, a definition of the parameter, and its new quantitative value and required units.ii. Is the concentration at your friend’s house lower, the same or higher than the concentration at your house and why? (you do not need to calculate the concentration) show all work
problem 5.3 Consider a steam power plant that operates on the ideal reheat Rankine cycle. The plant maintains the boiler at 5000 kPa, the reheat section at 1200 kPa, and the condenser at 20 kPa. The mixture quality at the exit of both turbines is 96 percent. Determine the temperature at the inlet of each turbine and the cycle's thermal efficiency. Answers: 327°C, 481°C, 35.0 percent High-P turbine Low-P turbine Reheater Boiler Condenser 2 Pump
7. Determine the 1 km downwind ground level concentration of PM [ug/m³] from an urban power plant which burns 3 ton/hr of bituminous coal containing 5.5% ash, and having 99% PM removal. The source emits from a stack with effective height 100 m. The wind at the stack height is 6 m/s and the atmospheric stability is class C.
If the actual draft required for a furnace is 6.239 cm of water and thefrictional losses in the stack are 15% of the theoretical draft, calculate therequired stack height in meters. Assume that the flue gas have an averagetemperature of 149 deg C and molecular weight of 30. Assume airtemperature of 21 deg C.
Problem-9, Civil (Environmental Engg.) An electrostatic precipitator (ESP) with 5600 m2 of collector plate area is 96 percent efficient in treating 185 m3/s of flue gas from a 200 MW thermal power plant. It was found that in order to achieve 97 percent efficiency, the collector plate area should be 6100 m2. In order to increase the efficiency to 99 percent, find the ESP collector plate area (expressed in m²).
PROBLEM 6 Sketch the EGL and HGL for the system shown below and label with the energy heads. Include the minor losses. Conditions: (a) da de (b) Nozzle is discharging to atmosphere (c) Include minor loss (fitting) nozzle fitting Pipe c Pipe A Pipe B Pump Datum
A new municipal waste combustor burns 300 tons/day of waste and produces 100 dscf of emissions per lb of waste burned. The plant just meets the NSPS emission standards and has an effective stack height of 100 m and is located in a rural area. Under C stability and a windspeed of 4 m/s measured at 10 m, determine Cmax and xmax for (a) PM, (b) Pb in micrograms per cubic meter, and m, respectively
Consider a 98% efficient ESP which removes, fly ash from combustion gases flowing at 100 m3/sec. The resistivity of the ash is 1.0 (10)10 ohm-cm. Calculate the total collection area required.
An ideal gas is compressed isothermally from 20 L to 10 L. During this process, 5 J of work is done to compress the gas. What is the change of thermal energy for this gas? A-5J - 10J ©5J D 0J