FUELS AND COMBUSTION QUIZ

Hydrogen content of coke oven gas increases due to cracking of hydrocarbons

Methane content in the coke oven gas decreases and carbon monoxide content increases

All of these

Calorific value of the coke oven gas decreases due to cracking of hydrocarbons which is not compensated by increase in CO & H? content

2.4

1.75

11.4

0.87

H₂ content in the coke oven gas is more

Calorific value of the coke oven gas is lower

Yield of ammonia is less

Aromatic content of tar is low

Decreases the dew point

Increases the dew point

Reduces the combustion efficiency by limiting the permissible temperature reduction

Both B & C

500

750

950

1100

Electricity

Both B & C

Coke oven gas

Mixed gas

Low fusion point of ash (< 1100° C)

All of these

Use of preheated primary air

Use of thick fire bed

Oil gas

Pitch creosote mixture

Wood

Briquettes

Calorific value increases sometimes

Clinkering tendency during combustion increases

None of these

Bulk density always decreases

Foundary

None of these

Domestic

Blastfurnace