FUELS AND COMBUSTION QUIZ

Dilute potassium carbonate

Alkaline pyragllol solution

Cuporus chloride

Potassium hydroxide

Blast furnace gas

Natural gas

Sewage gas

Coke oven gas

Swelling number increases

Calorific value increases

Swelling number decreases

Bulk density decreases

Require less time of carbonisation

Produce smaller coke

Produce stronger coke

All of these

47.3

27.6

42.9

23

Caking index

Ignition temperature

Ash fusion temperature

Calorific value

No change in the c.v. of coke oven gas

Increase in its throughput

Decrease in the c.v. of coke oven gas

Increase in the c.v. of coke oven gas

More or less ; (depends on the state of fuel.)

Equal

More

Less

Hardness & strength

Bulk density

Reactivity

Porosity

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

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

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