Question 1
Question
In modern pulverized coal firing facilities, the high ____ between the coal and the combustion air stream causes most of the ash to be carried over with the stack effluents.
Answer
-
turbulence
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temperatures
-
quality
-
flow
Question 2
Question
The _____ fan provides the volume of combustion air to the boiler
Answer
-
induced draft
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forced draft
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cross draft
-
balanced draft
Question 3
Question
Dust laden flue gas from the boiler enters the ________ precipitator that contains a charging electrode. The dust particles receive a charge of electricity and become electrified.
Answer
-
electrostatic
-
electric
-
cyclone
-
mist
Question 4
Question
The ______ system involves the use of solids handling equipment, such as scraper conveyors, bucket elevators, and conveyor belts.
Answer
-
ash
-
mechanical
-
pneumatic
-
Hydro
Question 5
Question
The ______ fan is used to remove the hot flue gases from the boiler.
Answer
-
induced draft
-
forced draft
-
cross draft
-
balanced draft
Question 6
Question
In the ____ scrubbing process, the heat of the flue gas is used to dry finely atomized slurry of alkaline reactants.
Answer
-
dry
-
wet
-
liquid
-
absorption
Question 7
Question
Louvers are installed in the _____ to direct the air to the base of the flame
Question 8
Question
The theory of particle precipitation is based on the fact that, when a moving particle changes its _____, a force is generated as a consequence
Answer
-
direction
-
velocity
-
humitity
-
charge
Question 9
Question
Recovery systems for the removal of SO2 can be classified into the two major types
Answer
-
solid, liquid
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wet, dry
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large,small
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adsorption, absorption
Question 10
Question
Solid pollutants are dust particles known as ash, consisting mainly of the ____ parts of the fuel
Answer
-
combustible
-
solid
-
metal
-
non-combustible