Question 1
Question
A simple combined cycle power generation system can consist of:
Answer
-
a single gas turbine generator
-
a HRSG (heat recovery steam generator)
-
A single steam turbine-generator
-
condenser
-
all of the above
Question 2
Question
One cause of corrosion in refuse-fired boilers is:
Answer
-
chlorides
-
fuels
-
high temperatures
-
sulphides
-
nitrous oxides
Question 3
Question
The primary function of a recovery boiler is to process ________
Question 4
Question
In a Steam Flooding Boiler, In order to keep the salts in the boiler water dissolved and to avoid deposits on the tubes, the steam produced contains _______moisture.
Question 5
Question
In Black Liquor combustion, the liquor droplets must be ____ enough to minimize entrainement in the combustion gases.
Answer
-
small
-
large
-
dispersed
-
fine
Question 6
Question
Vibrating grates serve to aid combustion by ____ out the bed of burning biomass
Answer
-
shaking
-
leveling
-
turning
-
moving
Question 7
Question
Basic refuse incinerators with waste heat recovery have evolved into ____ boilers with integral stokers
Answer
-
packaged
-
fire tubed
-
open harth
-
water-wall
-
black liquor
Question 8
Question
Which of the following are functions of the auxillary fuel burners in a Black Liquor Recovery Boiler:
1. Stabalize conditions during upsets in the black liquor feed
2. Produce extra steam
3. Burn out the char bed when shutting down.
4. Maintain furnace temperatures.
5. Sustain a stable ignition while establishing a char bed.
6. Raise steam during startup
Answer
-
1,2,3
-
1,2,3,5,6
-
4,5,6,
-
1,2,
-
3,5
Question 9
Question
In a fluidized bed boiler, combustion can take place at temperatures ranging from ____ deg C to ____deg C instead of normal combustion temperatures of 1600 Deg C for pulverized coal and oil firing.
Answer
-
300,500
-
200,400
-
800,900
-
600,700
Question 10
Question
In a Black Liquor Recovery Boiler, If water contacts molten smelt, a violent explosion will result, it is not a ____ reaction but a _____ reaction
Answer
-
chemical, physical
-
Physical, Chemical
-
Condensing, Evaporating
-
Acid-base, Endothermic