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Chemical Engineering :: Furnace Technology

  1. Which of the following variables affects the furnace capacity ?

  2. A.
    Temperature of flue gas.
    B.
    Thermal conductivity of stock.
    C.
    Thickness of heating stock.
    D.
    All (a), (b) and (c).

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  3. In a furnace, the heat taken by the charge/stock and the heat lost to the furnace structure & flue gases depends on the

  4. A.
    rate of firing and emissivity of flame.
    B.
    thermal conductivity of the charge & structural materials of furnace.
    C.
    nature of process ; whether batch, continuous or intermittant.
    D.
    all (a), (b) and (c)

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  5. In which of the following furnaces, the gases are sucked through the stock bed from below?

  6. A.
    Soaking pit
    B.
    Sintering machine
    C.
    Beehive oven
    D.
    None of these

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  7. Waste heat from the outgoing flue gases in a thermal power plant is recovered by a/an

  8. A.
    economiser
    B.
    steam superheater
    C.
    air preheater
    D.
    all (a), (b) and (c)

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  9. Recuperator is

  10. A.
    not used for fuel gas preheating.
    B.
    an intermittant waste heat recovery equipment.
    C.
    a continuous waste heat recovery equipment.
    D.
    heavier than regenerator meant for the same duty.

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  11. An improved and fuel efficient version of the pusher type reheating furnace is the __________ furnace.

  12. A.
    walking beam
    B.
    shaft
    C.
    tunnel
    D.
    rotary hearth

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