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

Related Mcqs:

An example of shaft furnace is the__________________?

A. L.D. converter B. Glass melting tank C. Blast furnace D. Soaking pit...

Hearth furnaces are not used for____________________?

A. Roasting B. Melting C. Reheating D. None of these...

The reason for excessive clinker formation in gas producers is the_____________________?

A. Use of coal/coke containing a high % of fines and ash B. Use of fuel having too low an ash fusion temperature C. Development of hot spots in the fuel bed and an abnormally high rate of gasification D. All A., B. and C....

Example of an indirectly heated furnace is__________________?

A. Hood annealing furnace B. Muffle furnace C. Both A. and B. D. Neither A. nor B....

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

A. Preheating of cold stock B. Preheating of combustion air C. Steam generation in waste heat boilers D. All A., B. and C....