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
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.

1700-1800

400-500

1400-1500

900-1000

1700-1800

400-500

1400-1500

900-1000

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Fuels and Combustion
Pick out the wrong statement.

None of these

Pulverised fuel can be completely burnt with less percentage of excess air compared to lump coal

Regulation of furnace temperature and atmosphere (oxidising or reducing) is easily possible with pulverised fuel firing

Low grade coal can be used, but generally high volatile matter coals are more suitable for making pulverised fuel

None of these

Pulverised fuel can be completely burnt with less percentage of excess air compared to lump coal

Regulation of furnace temperature and atmosphere (oxidising or reducing) is easily possible with pulverised fuel firing

Low grade coal can be used, but generally high volatile matter coals are more suitable for making pulverised fuel

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Fuels and Combustion
The average molecular weight of a flue gas having the composition by volume as CO₂ = 25%, O₂ = 25%, N₂ = 50% will be

23

27.6

42.9

47.3

23

27.6

42.9

47.3

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Fuels and Combustion
Shatter index of metallurgical coke on 2 inches and 0.5 inch screen should be respectively around __________ percent.

40 and 70

80 and 97

95 and 100

25 and 97

40 and 70

80 and 97

95 and 100

25 and 97

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Fuels and Combustion
Steam is intermittently admitted into the fuel bed during the production of producer gas to

Increase the gas production rate

Increase the combustion rate

Minimise the chances of clinker formation

Convert CO to CO₂

Increase the gas production rate

Increase the combustion rate

Minimise the chances of clinker formation

Convert CO to CO₂

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Fuels and Combustion
Mineral matter, 'M' and ash percentage 'A' in coal are roughly related as

M = 1.1 A

M = 0.5 A

M = A

M = 1.8 A

M = 1.1 A

M = 0.5 A

M = A

M = 1.8 A

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Fuels and Combustion

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 Pick out the wrong statement.

Fuels and Combustion The average molecular weight of a flue gas having the composition by volume as CO₂ = 25%, O₂ = 25%, N₂ = 50% will be

Fuels and Combustion Shatter index of metallurgical coke on 2 inches and 0.5 inch screen should be respectively around __________ percent.

Fuels and Combustion Steam is intermittently admitted into the fuel bed during the production of producer gas to

Fuels and Combustion Mineral matter, 'M' and ash percentage 'A' in coal are roughly related as

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
Pick out the wrong statement.

Fuels and Combustion
The average molecular weight of a flue gas having the composition by volume as CO₂ = 25%, O₂ = 25%, N₂ = 50% will be

Fuels and Combustion
Shatter index of metallurgical coke on 2 inches and 0.5 inch screen should be respectively around __________ percent.

Fuels and Combustion
Steam is intermittently admitted into the fuel bed during the production of producer gas to

Fuels and Combustion
Mineral matter, 'M' and ash percentage 'A' in coal are roughly related as