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.

70

145

85

105

70

145

85

105

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Fuels and Combustion
Size of blast furnace grade coke is __________ mm.

15-25

>100

25-80

0-15

15-25

>100

25-80

0-15

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Fuels and Combustion
About __________ Nm³ of air will be required for the complete combustion of 2Nm³ of CO.

5

1

2

3

5

1

2

3

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Fuels and Combustion
During combustion of a gaseous fuel, the presence of a non-luminous flame is an indication of the

Incomplete combustion

Complete combustion

High oxygen in flue gas

None of these

Incomplete combustion

Complete combustion

High oxygen in flue gas

None of these

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Fuels and Combustion
Critical Air Blast (CAB) value of coke is a direct measure of its

None of these

Strength

Hardness

Reactivity

None of these

Strength

Hardness

Reactivity

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Fuels and Combustion
A coal gasifier opearating at 20 atm. (e.g. Lugri gasifier) as compared to one operating at atmospheric pressure (e.g. Kopper-Totzek or Winkler gasifier) will produce a gas having

Lower carbon dioxide content

None of these

Higher methane content and thus higher calorific value

Higher carbon monoxide content

Lower carbon dioxide content

None of these

Higher methane content and thus higher calorific value

Higher carbon monoxide 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 Size of blast furnace grade coke is __________ mm.

Fuels and Combustion About __________ Nm³ of air will be required for the complete combustion of 2Nm³ of CO.

Fuels and Combustion During combustion of a gaseous fuel, the presence of a non-luminous flame is an indication of the

Fuels and Combustion Critical Air Blast (CAB) value of coke is a direct measure of its

Fuels and Combustion A coal gasifier opearating at 20 atm. (e.g. Lugri gasifier) as compared to one operating at atmospheric pressure (e.g. Kopper-Totzek or Winkler gasifier) will produce a gas having

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
Size of blast furnace grade coke is __________ mm.

Fuels and Combustion
About __________ Nm³ of air will be required for the complete combustion of 2Nm³ of CO.

Fuels and Combustion
During combustion of a gaseous fuel, the presence of a non-luminous flame is an indication of the

Fuels and Combustion
Critical Air Blast (CAB) value of coke is a direct measure of its

Fuels and Combustion
A coal gasifier opearating at 20 atm. (e.g. Lugri gasifier) as compared to one operating at atmospheric pressure (e.g. Kopper-Totzek or Winkler gasifier) will produce a gas having