FURNACE TECHNOLOGY QUIZ

If the flame is produced under the hearth and then sweeps up into the heating chamber, this is called a/an __________ furnace.

Sidefired

Recirculating

Covered

Underfired

TRUE ANSWER : ?
YOUR ANSWER : ?

Higher furnace temperature can not be achieved by use of a lean fuel gas in the furnace by

Oxygen enrichment of combustion air

Increasing the draft in the furnace

Preheating the fuel gas

Preheating the combustion air

TRUE ANSWER : ?
YOUR ANSWER : ?

Pulverised fuel fired furnaces employ __________ fuel firing.

Tangential

Horizontal

Vertical

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The rate of scaling of furnace stock depends upon the

Nature of atmosphere

All of these

Temperature

Time

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YOUR ANSWER : ?

Which of the following is not a continuous waste heat recovery equipment from the flue gases going out of furnace?

Regenerator

Economiser

Waste heat boiler

Ceramic recuperator

TRUE ANSWER : ?
YOUR ANSWER : ?

Which is not accomplished in an underfired furnace?

Reduction in the temperature of furnace gases

Portection of the periphery of the charge from excessive radiation

Increase in heating capacity/m² of floor space

Elimination of cold spot at the bottom of the charge

TRUE ANSWER : ?
YOUR ANSWER : ?

Blast furnace stoves are meant for heating

Air

None of these

Blast furnace gas

Steam

TRUE ANSWER : ?
YOUR ANSWER : ?

Rate of heat release in a furnace, which is the measure of heat intensity is defined as

Kcal/hr

Kcal/hr/m³ combustion space

Kcal/m³ combustion space

None of these

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YOUR ANSWER : ?

An example of indirectly heated furnace is the

None of these

Reheating furnace

Soaking pit

Muffle furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

Rotary kilns are used in the

Neither A nor B

Calcination of limestone & dolomite

Cement manufacture

Both A and B

TRUE ANSWER : ?
YOUR ANSWER : ?

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