Discussion
Home ‣ Chemical Engineering ‣ Furnace Technology Comments
- Question
__________ atmosphere is maintained inside an iron blast furnace.
Options- A. Oxidising
- B. Reducing
- C. Inert
- D. Decarburising
- Correct Answer
- Reducing
- 1. In a muffle furnace, the muffle
Options- A. retards the heat transfer.
- B. assists in temperature equalisation in the charge.
- C. permits the use of controlled atmosphere for the protection of stock.
- D. all (a), (b) and (c). Discuss
- 2. An example of shaft furnace is the
Options- A. L.D. converter
- B. glass melting tank
- C. blast furnace
- D. soaking pit Discuss
- 3. In reverberatory furnace, charge is heated mainly by
Options- A. conduction.
- B. natural convection.
- C. radiation of heat from the roof of the combustion chamber.
- D. none of these. Discuss
- 4. Fuel used in B.F. stove is
Options- A. pulverised coal
- B. furnace oil
- C. blast furnace gas/mixed gas
- D. coke oven gas Discuss
- 5. In order to maintain a reducing atmosphere in a furnace, it should have
Options- A. no O2 in flue gas
- B. CO in flue gas
- C. high excess air
- D. none of these Discuss
- 6. Tunnel kilns are usually used for
Options- A. roasting of pyrites.
- B. drying/tempering of refractories.
- C. reheating of slabs.
- D. melting of glass. Discuss
- 7. Ceramic recuperators (made of SiC) is economical, only when used for preheating combustion air above __________ °C.
Options- A. 250
- B. 650
- C. 850
- D. 1000 Discuss
- 8. In a furnace employing forced draught as compared to induced draught,
Options- A. air is sucked in, so air leaks are more and hence the furnace efficiency is reduced.
- B. the fan operates hot and hence blades are liable to corrosion and erosion.
- C. positive pressure exists in the furnace.
- D. none of these Discuss
- 9. In producer gas making furnace, steam is added along with air to mainly control the
Options- A. fusion of coal ash & clinker formation.
- B. C. V. of producer gas.
- C. temperature of producer gas.
- D. tar content in producer gas. Discuss
- 10. Which of the following is not an additive for flue gases from furnace to reduce its dew-point?
Options- A. Ammonia
- B. Fine dolomite
- C. Alkaline powders
- D. None of these Discuss
Furnace Technology problems
Search Results
Correct Answer: all (a), (b) and (c).
Correct Answer: blast furnace
Correct Answer: radiation of heat from the roof of the combustion chamber.
Correct Answer: blast furnace gas/mixed gas
Correct Answer: CO in flue gas
Correct Answer: drying/tempering of refractories.
Correct Answer: 650
Correct Answer: positive pressure exists in the furnace.
Correct Answer: fusion of coal ash & clinker formation.
Correct Answer: None of these
Comments
There are no comments.More in Chemical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.