A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon

Fuels and Combustion
A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon

Is less liable to spontaneous combustion on storage

Is more difficult to ignite and produces a shorter flame

None of these

Requires smaller combustion space and less secondary air

Is less liable to spontaneous combustion on storage

Is more difficult to ignite and produces a shorter flame

None of these

Requires smaller combustion space and less secondary air

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Fuels and Combustion
Quantity of coke oven gas produced by high temperature carbonisation of one ton of dry coal may be around __________ Nm³.

300

30, 000

30

3000

300

30, 000

30

3000

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Fuels and Combustion
Combustion of pulverised fuel

In a metallurgical furnace does not contaminate the product in the furnace by ash from fuel

Requires larger combustion chamber than rich gaseous fuel

Suppresses the discharge of fine dust and grit into atmosphere

All of these

In a metallurgical furnace does not contaminate the product in the furnace by ash from fuel

Requires larger combustion chamber than rich gaseous fuel

Suppresses the discharge of fine dust and grit into atmosphere

All of these

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Fuels and Combustion
Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are normally carried out at about __________ °C.

900-1000

1700-1800

1400-1500

400-500

900-1000

1700-1800

1400-1500

400-500

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Fuels and Combustion
Percentage of hydrogen in coke oven gas may be around

60

45

10

25

60

45

10

25

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Fuels and Combustion
The gas which contributes maximum to the heating value of natural gas is

CH₄

CO

H₂

CO₂

CH₄

CO

H₂

CO₂

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Fuels and Combustion

Fuels and Combustion A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon

Fuels and Combustion Quantity of coke oven gas produced by high temperature carbonisation of one ton of dry coal may be around __________ Nm³.

Fuels and Combustion Combustion of pulverised fuel

Fuels and Combustion Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are normally carried out at about __________ °C.

Fuels and Combustion Percentage of hydrogen in coke oven gas may be around

Fuels and Combustion The gas which contributes maximum to the heating value of natural gas is

Fuels and Combustion
A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon

Fuels and Combustion
Quantity of coke oven gas produced by high temperature carbonisation of one ton of dry coal may be around __________ Nm³.

Fuels and Combustion
Combustion of pulverised fuel

Fuels and Combustion
Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are normally carried out at about __________ °C.

Fuels and Combustion
Percentage of hydrogen in coke oven gas may be around

Fuels and Combustion
The gas which contributes maximum to the heating value of natural gas is