Correct viscosity of furnace oil at the burner tip for proper atomisation is about 25 centistokes. To reduce the viscosity of high viscosity furnace oil (250 centistokes) to the correct atomisation viscosity (i.e. 25 cst), it should be preheated to about____°C.

Fuels and Combustion
Correct viscosity of furnace oil at the burner tip for proper atomisation is about 25 centistokes. To reduce the viscosity of high viscosity furnace oil (250 centistokes) to the correct atomisation viscosity (i.e. 25 cst), it should be preheated to about____°C.

145

70

105

85

145

70

105

85

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Fuels and Combustion
Flue gas from the heating chamber of byproduct coke ovens is removed by

Natural draft

Steam ejector

Induced draft fan

Forced draft fan

Natural draft

Steam ejector

Induced draft fan

Forced draft fan

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Fuels and Combustion
Anthracite can be used for

Making carbon electrodes

Blending with highly coking coal to check its swelling which helps in saving coke even walls from damage and to produce high strength coke

All of these

Recarbonising steel

Making carbon electrodes

Blending with highly coking coal to check its swelling which helps in saving coke even walls from damage and to produce high strength coke

All of these

Recarbonising steel

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Fuels and Combustion
Calorific value of coal middling generated in coal washeries during washing of coal may be around __________ Kcal/kg.

4000

6000

8000

1000

4000

6000

8000

1000

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Fuels and Combustion
When steam is passed over coal resulting in the endothermic reaction represent by, C + H₂O = CO + H₂, it is called the __________ of coal.

Gasification

Oxidation

Carbonisation

Coalification

Gasification

Oxidation

Carbonisation

Coalification

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

Decrease in its caking power & calorific value

Decrease in its carbon & hydrogen content

All of these

Increase in its oxygen content

Decrease in its caking power & calorific value

Decrease in its carbon & hydrogen content

All of these

Increase in its oxygen content

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Fuels and Combustion

Fuels and Combustion Correct viscosity of furnace oil at the burner tip for proper atomisation is about 25 centistokes. To reduce the viscosity of high viscosity furnace oil (250 centistokes) to the correct atomisation viscosity (i.e. 25 cst), it should be preheated to about____°C.

Fuels and Combustion Flue gas from the heating chamber of byproduct coke ovens is removed by

Fuels and Combustion Anthracite can be used for

Fuels and Combustion Calorific value of coal middling generated in coal washeries during washing of coal may be around __________ Kcal/kg.

Fuels and Combustion When steam is passed over coal resulting in the endothermic reaction represent by, C + H₂O = CO + H₂, it is called the __________ of coal.

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

Fuels and Combustion
Correct viscosity of furnace oil at the burner tip for proper atomisation is about 25 centistokes. To reduce the viscosity of high viscosity furnace oil (250 centistokes) to the correct atomisation viscosity (i.e. 25 cst), it should be preheated to about____°C.

Fuels and Combustion
Flue gas from the heating chamber of byproduct coke ovens is removed by

Fuels and Combustion
Anthracite can be used for

Fuels and Combustion
Calorific value of coal middling generated in coal washeries during washing of coal may be around __________ Kcal/kg.

Fuels and Combustion
When steam is passed over coal resulting in the endothermic reaction represent by, C + H₂O = CO + H₂, it is called the __________ of coal.

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