Dust content in raw blast furnace gas is about __________ gm/Nm³ , hence it is cleaned to the dust level of about < 10 mg /Nm³ before use.

Fuels and Combustion
Dust content in raw blast furnace gas is about __________ gm/Nm³ , hence it is cleaned to the dust level of about < 10 mg /Nm³ before use.

15-30

150-200

70-100

43832

15-30

150-200

70-100

43832

ANSWER DOWNLOAD EXAMIANS APP

Fuels and Combustion
If the specific heat of gaseous products of combustion of a fuel is high, the abiabatic flame temperature will be

Low

High

None of these

Very high, if the fuel is of low calorific value

Low

High

None of these

Very high, if the fuel is of low calorific value

ANSWER DOWNLOAD EXAMIANS APP

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

Prevention of clinker formation in the oven

All of these

Controlling the dust nuisance while charging the coal

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)

Prevention of clinker formation in the oven

All of these

Controlling the dust nuisance while charging the coal

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)

ANSWER DOWNLOAD EXAMIANS APP

Fuels and Combustion
High rate of heating of coke ovens

May damage its walls due to abrupt excessive swelling of coal

Produces larger size coke

None of these

Increases the time of carbonisation

May damage its walls due to abrupt excessive swelling of coal

Produces larger size coke

None of these

Increases the time of carbonisation

ANSWER DOWNLOAD EXAMIANS APP

Fuels and Combustion
Abrasion index of blast furnace coke should be around __________ percent.

55

20

80

35

55

20

80

35

ANSWER DOWNLOAD EXAMIANS APP

Fuels and Combustion
Which of the following coke has the least percentage of ash?

Metallurgical coke

Beehive coke

Petroleum coke

Foundary coke

Metallurgical coke

Beehive coke

Petroleum coke

Foundary coke

ANSWER DOWNLOAD EXAMIANS APP

Fuels and Combustion

Fuels and Combustion Dust content in raw blast furnace gas is about __________ gm/Nm³ , hence it is cleaned to the dust level of about < 10 mg /Nm³ before use.

Fuels and Combustion If the specific heat of gaseous products of combustion of a fuel is high, the abiabatic flame temperature will be

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

Fuels and Combustion High rate of heating of coke ovens

Fuels and Combustion Abrasion index of blast furnace coke should be around __________ percent.

Fuels and Combustion Which of the following coke has the least percentage of ash?

Fuels and Combustion
Dust content in raw blast furnace gas is about __________ gm/Nm³ , hence it is cleaned to the dust level of about < 10 mg /Nm³ before use.

Fuels and Combustion
If the specific heat of gaseous products of combustion of a fuel is high, the abiabatic flame temperature will be

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

Fuels and Combustion
High rate of heating of coke ovens

Fuels and Combustion
Abrasion index of blast furnace coke should be around __________ percent.

Fuels and Combustion
Which of the following coke has the least percentage of ash?