Fuels and Combustion
High ash containing coke

Produces more slag when used in the blast furnace
None of these
Has poor strength and abrasion resistance
Is desirable in producer gas manufacture

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Fuels and Combustion
The main drawback of supplying more excess air in the combustion of fuel is the

Excessive power requirement of air blower
Enhanced sensible heat loss in the flue gas
Intermittant and uncontrolled combustion of the fuel
High exit flue gas temperature from the furnace

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Fuels and Combustion
Calorific value of

Light paraffinic fuel oils is equal to that of equivalent olefins
Light paraffinic fuel oils is lower than that of equivalent olefins
N-paraffin is lower than that of iso-paraffins of the same compounds
Light paraffinic fuel oils is higher than that of equivalent olefins

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