Fussain | EXAMIANS

Fuels and Combustion
Fussain

Is friable, charcoal like substance

All of these

Is non-coking, but when blended with highly coking coal, controls its swelling and produces high strength coke on carbonisation

Has highest fixed carbon and lowest volatile matter content of all the four banded components of coal

Is friable, charcoal like substance

All of these

Is non-coking, but when blended with highly coking coal, controls its swelling and produces high strength coke on carbonisation

Has highest fixed carbon and lowest volatile matter content of all the four banded components of coal

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Fuels and Combustion
Coke oven gas is stripped of its H₂S and mercaptans content by

Bubbling it through dilute sulphuric acid

Absorption in wash oil

Adsorption on silica gel

Adsorption on bog iron bed

Bubbling it through dilute sulphuric acid

Absorption in wash oil

Adsorption on silica gel

Adsorption on bog iron bed

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Fuels and Combustion
Low temperature oxidation of stored coal results in the

Decrease in its caking power & calorific value

Increase in its oxygen content

Decrease in its carbon & hydrogen content

All of these

Decrease in its caking power & calorific value

Increase in its oxygen content

Decrease in its carbon & hydrogen content

All of these

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Fuels and Combustion
A coal containing high amount of volatile matter will have

Very little ash content

High fusion point of its ash

Low ignition temperature

Low adiabatic flame temperature

Very little ash content

High fusion point of its ash

Low ignition temperature

Low adiabatic flame temperature

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Fuels and Combustion
Washing of coal decreases its

Both B and C

Ash content

Mineral matter content

Caking index

Both B and C

Ash content

Mineral matter content

Caking index

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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

Fuels and Combustion Fussain

Fuels and Combustion Coke oven gas is stripped of its H₂S and mercaptans content by

Fuels and Combustion Low temperature oxidation of stored coal results in the

Fuels and Combustion A coal containing high amount of volatile matter will have

Fuels and Combustion Washing of coal decreases its

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

Fuels and Combustion
Fussain

Fuels and Combustion
Coke oven gas is stripped of its H₂S and mercaptans content by

Fuels and Combustion
Low temperature oxidation of stored coal results in the

Fuels and Combustion
A coal containing high amount of volatile matter will have

Fuels and Combustion
Washing of coal decreases its

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