Furnace Technology
Which of the following is the most important deterrants to an extended use of pulverised coal in boiler firing?

Excessive fly ash discharge from the stack
Ash disposal problem
Higher power consumption in its transportation
Erosion of induced draft fan blades

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Furnace Technology
Recuperator is

A continuous waste heat recovery equipment
Not used for fuel gas preheating
Heavier than regenerator meant for the same duty
An intermittant waste heat recovery equipment

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