Width of the coke oven towards coke side is slightly more than that on pusher side to

Fuels and Combustion
Width of the coke oven towards coke side is slightly more than that on pusher side to

None of these

Facilitate easy discharging of coke as it swells during carbonisation

Facilitate uniform heating of the oven

Increase the output of the coke

None of these

Facilitate easy discharging of coke as it swells during carbonisation

Facilitate uniform heating of the oven

Increase the output of the coke

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Fuels and Combustion
With increase in the time of carbonisation at a particular temperature (say 1000°C), the __________ percentage in coke oven gas increases.

Hydrogen

Methane

All of these

Unsaturated hydrocarbons

Hydrogen

Methane

All of these

Unsaturated hydrocarbons

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Fuels and Combustion
Fusion point of coal ash generally varies from 1000 to 1700° C. Ash having fusion point less than __________ °C is liable to form clinker.

1350

1100

1400

1250

1350

1100

1400

1250

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Fuels and Combustion
Low temperature oxidation of coal is accelerated by the

All of these

Storage in large heaps

Storage in compressed piles

Absence of porous or friable particles

All of these

Storage in large heaps

Storage in compressed piles

Absence of porous or friable particles

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Fuels and Combustion
Sometimes water is sprayed during coal charging in the coke oven, which helps in

Reducing the cracking of hydrocarbons in the gas and increasing the percentage of CO & H₂ in the gas (due to the endothermic reaction represented by C + H₂O = CO + H₂)

Prevention of clinker formation in the oven

Controlling the dust nuisance while charging the coal

All of these

Reducing the cracking of hydrocarbons in the gas and increasing the percentage of CO & H₂ in the gas (due to the endothermic reaction represented by C + H₂O = CO + H₂)

Prevention of clinker formation in the oven

Controlling the dust nuisance while charging the coal

All of these

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Fuels and Combustion
When the coal is heated in absence of air, it is called its

Deoxidation

Coalification

Gasification

Carbonisation

Deoxidation

Coalification

Gasification

Carbonisation

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Fuels and Combustion

Fuels and Combustion Width of the coke oven towards coke side is slightly more than that on pusher side to

Fuels and Combustion With increase in the time of carbonisation at a particular temperature (say 1000°C), the __________ percentage in coke oven gas increases.

Fuels and Combustion Fusion point of coal ash generally varies from 1000 to 1700° C. Ash having fusion point less than __________ °C is liable to form clinker.

Fuels and Combustion Low temperature oxidation of coal is accelerated by the

Fuels and Combustion Sometimes water is sprayed during coal charging in the coke oven, which helps in

Fuels and Combustion When the coal is heated in absence of air, it is called its

Fuels and Combustion
Width of the coke oven towards coke side is slightly more than that on pusher side to

Fuels and Combustion
With increase in the time of carbonisation at a particular temperature (say 1000°C), the __________ percentage in coke oven gas increases.

Fuels and Combustion
Fusion point of coal ash generally varies from 1000 to 1700° C. Ash having fusion point less than __________ °C is liable to form clinker.

Fuels and Combustion
Low temperature oxidation of coal is accelerated by the

Fuels and Combustion
Sometimes water is sprayed during coal charging in the coke oven, which helps in

Fuels and Combustion
When the coal is heated in absence of air, it is called its