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
temperatures
quality
flow
Question 2
Question
The _____ fan provides the volume of combustion air to the boiler
Answer
induced draft
forced draft
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
Answer
fan
burner
windbox
ducts
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
wet, dry
large,small
adsorption, absorption
Question 10
Question
Solid pollutants are dust particles known as ash, consisting mainly of the ____ parts of the fuel