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Which mechanism is used to supply coal in the single retort stoker?

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Which mechanism is used to supply coal in the single retort stoker?

(a) Hopper

(b) Chain bucket

(c) Screw conveyor

(d) Air blowers

This question was addressed to me in a job interview.

My question is based upon Type of Stokers in division Steam Power Plant of Energy Engineering

1 Answer

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Best answer
The correct choice is (c) Screw conveyor

To explain: The fuel is placed in the large hopper on the front of the furnace. Then it is further fed by reciprocating ram or screw conveyor into the bottom of the horizontal trough. The ash formed after burning of coal is collected at other end.

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