EXAMIANS
Pure carbon is completely burnt in oxygen. The flue gas analysis is 70%CO₂, 20%CO and 10%O₂. The percent excess oxygen used is
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Spontaneous combustion of coal on storage results due to
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During combustion of coal on grate, clinker formation is increased by the
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Use of pulverised coal in boiler furnace provides
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Which of the following petrological constitutes is responsible for bright and lustrous black band of bituminous coal?
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Coke oven gas constitutes mainly of
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Coal is pulverised before burning in large capacity boiler furnaces mainly to
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The calorific value of natural gas is about __________ kcal/Nm³.
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Of the total tar present in raw coke oven gas, the tar recovered in primary cooler is about __________ percent.
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Ash content in the middling coal (a byproduct of coal washeries) in India ranges between __________ percent.
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