Power Engineering 4th Ch59 Fluidized Bed Combustion || 100% no
Error.
1. Reducing furnace bed temperatures by use of AFBC units reduces as well:
a. Production of hot flue gases
b. Efficiency of operations
c. Production of NOx's
d. The turbulence of the furnace interior
e. The steam generating capacity. correct answers c
2. For effective removal of fine dust most of the power plants in the world use:
a. Cyclone separators and filter beds
b. Oil wetted fiberglass
c. Cyclone separators
d. Dust collectors
e. Electrostatic precipitators and fabric filters. correct answers e
3. AFBC units permit the reduction of furnace temperatures from:
a. 1600 to 850°C
b. 1800 to 650°C
c. 1700 to 750°C
d. 1550 to 900°C
e. 1350 to 500°C. correct answers a
4. A design disadvantage of a PFBC furnace is:
a. Erosion and/or corrosion/fouling of turbine blades may occur
b. A wide range of fuels cannot be used
c. A great deal of maintenance is required
, d. Fuel preparation is very complex
e. The boiler is too compact for ease of cleaning. correct answers a
5. What percentage of capital cost outlay could the cost of tail gas cleaning equipment increase to
according to a 1986 study?
a. 20%
b. 47%
c. 55%
d. 75%
e. 83%. correct answers b
6. What percentage of SOx reduction that can be gained by adding an excess amount of
limestone to the bed of an AFBC unit?
a. 40 - 50%
b. 50 - 60%
c. 70 - 80%
d. 80 - 90%
e. 90 - 95%. correct answers d
7. About the only thing that limits the type of fuel burned in a FBC is:
a. How well the material has been mixed prior to burning
b. The heating value of the material being burned
c. The amount of slag the fuel will produce
d. The size of the plant using the fuel
e. The size of the burners. correct answers b
8. PFBC stands for:
a. Provincial/Federal boiler calculations
Error.
1. Reducing furnace bed temperatures by use of AFBC units reduces as well:
a. Production of hot flue gases
b. Efficiency of operations
c. Production of NOx's
d. The turbulence of the furnace interior
e. The steam generating capacity. correct answers c
2. For effective removal of fine dust most of the power plants in the world use:
a. Cyclone separators and filter beds
b. Oil wetted fiberglass
c. Cyclone separators
d. Dust collectors
e. Electrostatic precipitators and fabric filters. correct answers e
3. AFBC units permit the reduction of furnace temperatures from:
a. 1600 to 850°C
b. 1800 to 650°C
c. 1700 to 750°C
d. 1550 to 900°C
e. 1350 to 500°C. correct answers a
4. A design disadvantage of a PFBC furnace is:
a. Erosion and/or corrosion/fouling of turbine blades may occur
b. A wide range of fuels cannot be used
c. A great deal of maintenance is required
, d. Fuel preparation is very complex
e. The boiler is too compact for ease of cleaning. correct answers a
5. What percentage of capital cost outlay could the cost of tail gas cleaning equipment increase to
according to a 1986 study?
a. 20%
b. 47%
c. 55%
d. 75%
e. 83%. correct answers b
6. What percentage of SOx reduction that can be gained by adding an excess amount of
limestone to the bed of an AFBC unit?
a. 40 - 50%
b. 50 - 60%
c. 70 - 80%
d. 80 - 90%
e. 90 - 95%. correct answers d
7. About the only thing that limits the type of fuel burned in a FBC is:
a. How well the material has been mixed prior to burning
b. The heating value of the material being burned
c. The amount of slag the fuel will produce
d. The size of the plant using the fuel
e. The size of the burners. correct answers b
8. PFBC stands for:
a. Provincial/Federal boiler calculations
