Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the___________________?

Related Mcqs:

The average molecular weight of a flue gas having the composition by volume as CO2 = 25%, O2 = 25%, N2 = 50% will be___________________?

A. 27.6 B. 23 C. 47.3 D. 42.9...

Coals used for the generation of producer gas should have ____________________?

A. High caking index B. Low fusion point of ash C. High volatile matter content D. Very low ash content (8-10%)...

Natural draft created by the chimney depends upon _____________________?

A. Temperature of the flue gas B. Its height C. Both A. & B. D. Neither A. nor B....

Volatile matter content of metallurgical coke may be around ______________ percent?

A. 1-2 B. 10-15 C. 22-26 D. 30-33...

Coke compared to the coal from which it has been made, contains ____________________?

A. Less volatile matter B. More carbon C. Greater percentage of ash D. All A., B. and C....