Which of the following is not a continuous waste heat recovery equipment from the flue gases going out of furnace ?

Related Mcqs:

1. Design of waste heat boiler for recovery of waste heat from furnace gases depends upon the_________________?

   A. Quantity & temperature of waste gas B. Dust concentration & nature of dust in waste gas C. Corrosive nature of the waste gas D. All A., B. and C....

2. In a furnace, the heat taken by the charge/stock and the heat lost to the furnace structure & flue gases depends on the__________________?

   A. Rate of firing and emissivity of flame B. Thermal conductivity of the charge & structural materials of furnace C. Nature of process; whether batch, continuous or intermittent D. All A., B. and C....

3. Metallic recuperators are not used for waste heat recovery, if the hot flue gas temperature is above _____________ °C, because corrosion prevails at higher temperatures?

   A. 350 B. 750 C. 1050 D. 1250...

4. Waste heat from the outgoing flue gases in a thermal power plant is recovered by a/an_________________?

   A. Economiser B. Steam superheater C. Air preheater D. All A., B. and C....

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

   A. Coke oven B. Blast furnace stoves C. Beehive coke oven D. High pressure boiler...

6. Combustion of furnace oil in a furnace (soaking pit) with preheated combustion air at 400°C results in saving of about __________ percent furnace oil as compared to its combustion with atmospheric air, if the flue gas outlet temperature from the soaking pit is 1200°C ?

   A. 5 B. 60 C. 20 D. 40...

7. Which of the following is not an additive for flue gases from furnace to reduce its dewpoint ?

   A. Ammonia B. Fine dolomite C. Alkaline powders D. None of these...

8. 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....

9. Regenerators are used for waste heat recovery in____________________?

   A. By-product coke ovens B. Beehive coke oven C. Blast furnace stoves D. Soaking pits...

10. An electric furnace producing heat by means of an electric arc struck between each of three electrodes and the charge is called ____________ furnace?

    A. Resistance B. Arc C. Low frequency induction D. None of these...