FURNACE TECHNOLOGY QUIZ

The reason for excessive clinker formation in gas producers is the

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

Use of fuel having too low an ash fusion temperature

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

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Reducing atmosphere is maintained in a

Calcination kiln

L.D. converter

Soaking pit

Blast furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a directly fired furnace?

By-product coke oven

Open hearth furnace

Sintering furnace

Calcination kiln

TRUE ANSWER : ?
YOUR ANSWER : ?

Fuel economy in an industrial furnace operation can not be achieved by the use of

Recupterators

Stoichiometric combustion air

Combustion air not enriched with oxygen

Non-preheated combustion air

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following advantages is not associated with the use of preheated air for combustion of a fuel in the furnace?

Increase in flame temperature

Saving in fuel consumption

Increase in calorific value of the fuel

Reduction in scale losses

TRUE ANSWER : ?
YOUR ANSWER : ?

In reverberatory furnace, charge is heated mainly by

None of these

Radiation of heat from the roof of the combustion chamber

Natural convection

Conduction

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Kcal/hr/m³ combustion space

Kcal/m³ combustion space

Kcal/hr

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Very high pressure boilers are usually __________ boilers.

Fire tube

Waste heat

Natural circulation

Water tube

TRUE ANSWER : ?
YOUR ANSWER : ?

An example of shaft furnace is the

L.D. converter

Blast furnace

Soaking pit

Glass melting tank

TRUE ANSWER : ?
YOUR ANSWER : ?

The method of Lobo and Evans is concerned with the calculation of the

Heat transfer by forced convection in a reboiler

Heat absorption in radiant section of a furnace

Heat transfer in vacuum condensers

Mass transfer co-efficient

TRUE ANSWER : ?
YOUR ANSWER : ?

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