FURNACE TECHNOLOGY QUIZ

Which furnace employs an I.D. fan for the removal of flue gases from the furnace?

Beehive coke oven

High pressure boiler

Coke oven

Blast furnace stoves

TRUE ANSWER : ?
YOUR ANSWER : ?

Use of pulverised coal in boilers provides

Better combustion

Higher calorific value

Less erosion on furnace wall

Smokeless burning

TRUE ANSWER : ?
YOUR ANSWER : ?

Main gas valve in a gaseous fuel burner is a __________ valve.

Butterfly

Gate

Globe

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Oxygen enrichment of combustion air does not result in increase of the

Oxygen in the flue gas

Stack loss

Heat transfer rate in the furnace

Flame temperature

TRUE ANSWER : ?
YOUR ANSWER : ?

Recuperator is

Not used for fuel gas preheating

Heavier than regenerator meant for the same duty

An intermittant waste heat recovery equipment

A continuous waste heat recovery equipment

TRUE ANSWER : ?
YOUR ANSWER : ?

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

High excess air

No O₂ in flue gas

CO in flue gas

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

In which of the following furnaces, the gases are sucked through the stock bed from below?

None of these

Soaking pit

Beehive oven

Sintering machine

TRUE ANSWER : ?
YOUR ANSWER : ?

Protective gas used in the annealing furnace for steel coil comprises of

5% H₂ + 9% N₂

100 %H₂

100% CO

95% N₂ + 5% H₂

TRUE ANSWER : ?
YOUR ANSWER : ?

Blast furnace stoves are meant for heating

Air

None of these

Blast furnace gas

Steam

TRUE ANSWER : ?
YOUR ANSWER : ?

Very high pressure boilers are usually __________ boilers.

Fire tube

Waste heat

Natural circulation

Water tube

TRUE ANSWER : ?
YOUR ANSWER : ?

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