FUELS AND COMBUSTION QUIZ

Any of the above

Amount of heat liberated

Flue gas temperature

Flame temperature

Coke oven gas

Blast furnace gas

Natural gas

Water gas

500

50

10

0.5

Caking and swelling properties

Abradability

Weathering properties

Grindability

M40 > 4% and M10 < 80%

M40 > 98% and M10 < 2%

M40 > 10% and M10 < 78%

M40 > 78% and M10 < 10%

Can't be known without calculating it

Is always positive

Is equal to the heat of formation

Is always negative

Fine sizes without the presence of any lump

Large heaps with small surface to volume ratio

Shallow and small piles

Closed space without any ventilation facility

Rich gas (e.g., coke oven gas)

Both B and C

Both steam and electrical power

Lean gas (e.g., B.F. gas)

Adiabatic flame temperature

All of these

Calorific value, cleanliness and relatively low distribution cost (due to its low specific gravity)

Heat release rate (thus requiring smaller combustion chamber)

None of these

Carbonisation

Gasification

Hydrogenation