chemical-engineering-furnace-technology Related Question Answers
26. Which of the following is a natural draft furnace ?
27. To reduce the stack loss, heat recovery from flue gas can be done by
28. Large tonnage of refractory bricks are dried in a
29. Pulverised fuel fired furnaces employ __________ fuel firing.
30. Which of the following is not a directly fired furnace ?
31. The reason for excessive clinker formation in gas producers is the
32. Which of the following is not an additive for flue gases from furnace to reduce its dew-point?
33. Acid dew point temperature (ADT) of a flue gas produced by the combustion of a fuel containing 1% sulphur may be about __________ °C.
34. Low stack loss indicates the
35. Thermal efficiency of blast furnace stoves used for heating blast (air) may be about __________ percent.
36. Heat transfer rate to the stock/charge in the furnace does not depend upon the
37. Power required in case of forced draught as compared to induced draught (for the same draught produced) is
38. Means for giving direction to the circulation of gases in furnaces are
39. The amount of combustible escaping uncon-sumed from the furnace, depends upon the
40. __________ is an indirectly heated furnace.
41. The thermal efficiency of an air/fuel gas preheating recuperator may be as high as __________ percent.
42. In a muffle furnace, the muffle
43. Which is not a hearth furnace ?
44. An example of shaft furnace is the
45. Which is a regenerative furnace ?
46. Which of the following accentuates clinker-ing troubles on furnace grate burning coal?
47. The electric furnace in which heat is produced by a combination of induced current and skin effect is called __________ furnace.
48. Ingress of cold air in the furnaces through cracks, charging doors, openings etc.
49. Use of pulverised coal in boilers provides
50. In which of the waste heat recovery equipment, the flow of flue gas and air is alternately reversed after a fixed interval of time ?
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