FURNACE TECHNOLOGY QUIZ

Shaft furnaces are used for

All of these

Smelting

Calcining

Roasting

TRUE ANSWER : ?
YOUR ANSWER : ?

Ceramic recuperators (made of SiC) is economical, only when used for preheating combustion air above __________ °C.

250

650

850

1000

TRUE ANSWER : ?
YOUR ANSWER : ?

Regenerators are used for waste heat recovery in

By-product coke ovens

Beehive coke oven

Blast furnace stoves

Soaking pits

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Size of the furance

Emissivity of the refactory walls

Thickness of the stock

Use of waste heat recovery equipments

TRUE ANSWER : ?
YOUR ANSWER : ?

Scaling of furnace stock is reduced by __________ in flue gas.

H₂

High CO/CO₂

CO

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one is not an induced draught furnace?

None of these

Sintering furnace

Blast furnace stove

High pressure boiler

TRUE ANSWER : ?
YOUR ANSWER : ?

The advantages of firing pulverised coal in the furnace lies in the fact that, it

Permits the use of high ash content coal

Permits the use of low fusion point ash coal

All of these

Accelerates the burning rate and economises on fuel consumption

TRUE ANSWER : ?
YOUR ANSWER : ?

In producer gas making furnace, steam is added along with air to mainly control the

V. of producer gas

Temperature of producer gas

Fusion of coal ash & clinker formation

Tar content in producer gas

TRUE ANSWER : ?
YOUR ANSWER : ?

Recuperator is

An intermittant waste heat recovery equipment

Not used for fuel gas preheating

A continuous waste heat recovery equipment

Heavier than regenerator meant for the same duty

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is the most suitable for preheating combustion air above 650°C ?

None of these

Ceramic recuperator

Regenerator

Metallic recuperator

TRUE ANSWER : ?
YOUR ANSWER : ?

↑