FURNACE TECHNOLOGY QUIZ

Size of the combustion chamber of a furnace depends upon the

Heat release rate of the fuel

All of these

Preheat temperature of fuel & air

Method of mixing the fuel & air

TRUE ANSWER : ?
YOUR ANSWER : ?

Operation of blast furnace stove is based on the principles of a __________ furnace.

Neither A nor B

Recuperative

Both A and B

Regenerative

TRUE ANSWER : ?
YOUR ANSWER : ?

Heat transfer rate to the charge/stock in a furnace does not depend upon the

Initial temperature of the charged stock

Flue gas temperature

Type of fuels viz solid, liquid or gaseous

Emissivity of refractory walls

TRUE ANSWER : ?
YOUR ANSWER : ?

The reason for excessive clinker formation in gas producers is the

All of these

Use of coal/coke containing a high % of fines and ash

Use of fuel having too low an ash fusion temperature

Development of hot spots in the fuel bed and an abnormally high rate of gasification

TRUE ANSWER : ?
YOUR ANSWER : ?

__________ atmosphere is maintained inside an iron blast furnace.

Reducing

Inert

Oxidising

Decarburising

TRUE ANSWER : ?
YOUR ANSWER : ?

An electric furnace producing heat by means of an electric arc struck between each of three electrodes and the charge is called __________ furnace.

Arc

Resistance

Low frequency induction

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Cement Kiln is a

Natural draft furnace

Tunnel Kiln

Rotary Kiln

Batch furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

Temperature of a furnace fired with low calorific value fuel gas (i.e. lean gas) can be increased by

All of these

Preheating the fuel gas

Preheating the combustion air

Oxygen enrichment of combustion air

TRUE ANSWER : ?
YOUR ANSWER : ?

The purpose of controlling the furnace atmosphere is to prevent surface attack by

Sulphur penetration

Decarburising

Oxidation/scaling

Either of the above

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To reduce the stack loss, heat recovery from flue gas can be done by

All of these

Preheating of cold stock

Steam generation in waste heat boilers

Preheating of combustion air

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YOUR ANSWER : ?