FUELS AND COMBUSTION QUIZ

Autocatalytic

Endothermic

Exothermic

Catalytic

Caking tendency

Size stability

Coking tendency

Clinkering tendency

Controlling the excess air

Oxygen enrichment of combustion air

Maintaining proper draft in the furnace

Using low c.v. fuels

Pulverised coal in boilers

Less air for combustion

Correct amount of air for combustion

Too much air for combustion

95 and 100

25 and 97

80 and 97

40 and 70

Fixed carbon and a heating value of 132 BTU/1b

Ash and a heating value of 13, 200 BTU/1b

None of these

Fixed carbon and having a heat value of 13, 200 BTU/1b

Increase in its throughput

Increase in the c.v. of coke oven gas

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

Decrease in the c.v. of coke oven gas

Decreases the dew point

Both B & C

Reduces the combustion efficiency by limiting the permissible temperature reduction

Increases the dew point

Structural strength of silica bricks

Problem of uniform heating along its height

Problem in door cleaning

Buckling of ram of pusher car at the time of coke pushing

Silica gel

Basalt

Bog iron (i.e., moist ferric hydroxide)

Diatomaceous earth