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