PROCESS EQUIPMENT AND PLANT DESIGN QUIZ

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

Sintering machine

Soaking pit

None of these

Beehive oven

TRUE ANSWER : ?
YOUR ANSWER : ?

The reason for excessive clinker formation in gas producers is the

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

Use of fuel having too low an ash fusion temperature

All of these

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

TRUE ANSWER : ?
YOUR ANSWER : ?

Combustion of fuel in a furnace with oxygen enriched air results in higher

Flue gas volume

Stack loss

Fuel consumption

Flame temperature

TRUE ANSWER : ?
YOUR ANSWER : ?

__________ furnace is not an electric furnace.

Pot

Resistance

Arc

Induction

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following variables does not affect the furnace capacity?

None of these

Ratio of wall surface to surface of stock

Gas velocity in furnace

Size of the furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

Ceramic coating material for furnace refractory, which increases its emissivity and thus the radiation heat transfer rate in the furnace, comprises of

Thoria

Zircon powder

Graphite powder

Beryllium

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Non-preheated combustion air

Recupterators

Stoichiometric combustion air

Combustion air not enriched with oxygen

TRUE ANSWER : ?
YOUR ANSWER : ?

Air filtration in a furnace

Increases the flue gas temperature

Reduces its thermal efficiency

Is indicated by flame sting out

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Turn down ratio of a burner

Should be 1:1 for a batch type furnace.

Is the ratio of maximum to minimum permissible heat input rates

Should be as low as possible i.e., 1 : 2

Is normally much more for a continuous furnace as compared to a batch furnace

TRUE ANSWER : ?
YOUR ANSWER : ?

An improved and fuel efficient version of the pusher type reheating furnace is the __________ furnace.

Tunnel

Shaft

Walking beam

Rotary hearth

TRUE ANSWER : ?
YOUR ANSWER : ?