During combustion of coal on grate, clinker formation is increased by the

Fuels and Combustion
During combustion of coal on grate, clinker formation is increased by the

Use of thick fire bed

All of these

Low fusion point of ash (< 1100° C)

Use of preheated primary air

Use of thick fire bed

All of these

Low fusion point of ash (< 1100° C)

Use of preheated primary air

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

All of these

Controlling the dust nuisance while charging the coal

Prevention of clinker formation in the oven

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)

All of these

Controlling the dust nuisance while charging the coal

Prevention of clinker formation in the oven

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)

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Fuels and Combustion
Bomb calorimeter can be used to determine the __________ of the coal.

Both A & B

Neither A nor B

Sulphur content

Calorific value

Both A & B

Neither A nor B

Sulphur content

Calorific value

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Fuels and Combustion
Presence of free moisture in coal is most disadvantageous during

Combustion of fire slacks on the grates

Handling (e.g. when emptying wagons)

None of these

Its pulverisation (as it requires more power)

Combustion of fire slacks on the grates

Handling (e.g. when emptying wagons)

None of these

Its pulverisation (as it requires more power)

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Fuels and Combustion
Producer gas comprises mainly of

CO & N₂

CO₂ & N₂

CO & H₂

CO₂ & H₂

CO & N₂

CO₂ & N₂

CO & H₂

CO₂ & H₂

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Fuels and Combustion
Dry air requirement for burning 1 Nm³ of CO to CO₂ may be around __________ Nm³.

2.4

0.87

11.4

1.75

2.4

0.87

11.4

1.75

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Fuels and Combustion

Fuels and Combustion During combustion of coal on grate, clinker formation is increased by the

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

Fuels and Combustion Bomb calorimeter can be used to determine the __________ of the coal.

Fuels and Combustion Presence of free moisture in coal is most disadvantageous during

Fuels and Combustion Producer gas comprises mainly of

Fuels and Combustion Dry air requirement for burning 1 Nm³ of CO to CO₂ may be around __________ Nm³.

Fuels and Combustion
During combustion of coal on grate, clinker formation is increased by the

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

Fuels and Combustion
Bomb calorimeter can be used to determine the __________ of the coal.

Fuels and Combustion
Presence of free moisture in coal is most disadvantageous during

Fuels and Combustion
Producer gas comprises mainly of

Fuels and Combustion
Dry air requirement for burning 1 Nm³ of CO to CO₂ may be around __________ Nm³.