Chemical Engineering :: Fuels and Combustion
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Pick out the correct statement.
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Which of the following is a single stage, fixed bed high pressure coal gasification process ?
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Kopper-Totzek coal gasifier (installed in a coal based nitrogeneous fertiliser plant) employs a/an __________ bed gasifier.
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In flue gas analysis by Orsat's apparatus, carbon monoxide is absorbed by
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Gas yield in the Kopper-Totzek coal gasifier is about __________ Nm3/ton coal (ash = 35%).
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Which of the following is a primary fuel ?
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Combustion of pulverised coal compared to the lumpy coal
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The ratio of % total carbon obtained in the ultimate analysis of coke and % fixed carbon obtained in the proximate analysis is always
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A coal with high __________ content, would ignite most easily.
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A.
Oxygen content decreases from lignite to bituminous coal as the coalification increases.
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B.
The less the oxygen content, better is the coal, as it reduces the calorific value.
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C.
With increase in oxygen content, moisture holding capacity of coal increases and the caking power decreases.
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D.
all (a), (b) and (c)
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