FURNACE TECHNOLOGY QUIZ

Pulverised fuel fired furnaces employ __________ fuel firing.

Horizontal

Vertical

All of these

Tangential

TRUE ANSWER : ?
YOUR ANSWER : ?

Combustion of fuel in a furnace with oxygen enriched air results in higher

Fuel consumption

Flame temperature

Flue gas volume

Stack loss

TRUE ANSWER : ?
YOUR ANSWER : ?

In a furnace employing forced draught as compared to induced draught,

The fan operates hot and hence blades are liable to corrosion and erosion

Air is sucked in, so air leaks are more and hence the furnace efficiency is reduced

Positive pressure exists in the furnace

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

In order to maintain a reducing atmosphere in a furnace, it should have

None of these

High excess air

CO in flue gas

No O₂ in flue gas

TRUE ANSWER : ?
YOUR ANSWER : ?

Pot furnace which is either regenerative or recupterative, is used in the manufacture of

Glass

Potteries

Stainless steel

Refractory bricks

TRUE ANSWER : ?
YOUR ANSWER : ?

Reverberatory furnace is used for

Steel melting

Roasting/reduction of ores

Heating air

Annealing steel coil

TRUE ANSWER : ?
YOUR ANSWER : ?

Rotary kilns are used in the

Neither A nor B

Both A and B

Calcination of limestone & dolomite

Cement manufacture

TRUE ANSWER : ?
YOUR ANSWER : ?

Which is not accomplished in an underfired furnace?

Reduction in the temperature of furnace gases

Elimination of cold spot at the bottom of the charge

Portection of the periphery of the charge from excessive radiation

Increase in heating capacity/m² of floor space

TRUE ANSWER : ?
YOUR ANSWER : ?

Which is not a hearth furnace?

Cupola

Glass tank furnace

Reheating furnace

Open hearth furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

Overfire burning in a furnace is a phenomenon characterised by

Burning carbon monoxide and other incombustible in upper zone of furnace by supplying more air

Supply of excess air

None of these

Supply of excess fuel

TRUE ANSWER : ?
YOUR ANSWER : ?