Discussion
Home ‣ Chemical Engineering ‣ Furnace Technology Comments
- Question
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.
Options- A. 5
- B. 60
- C. 20
- D. 40
- Correct Answer
- 20
- 1. If fuel and air are mixed ahead of the burner, it is called a/an __________ burner.
Options- A. premix
- B. outside mixing type
- C. rotary
- D. diffusion Discuss
- 2. The heating capacity of continuous reheating furnace depends upon the
Options- A. hearth area and furnace temperature.
- B. emissivity of the stock.
- C. ratio of wall surface to stock surface.
- D. all (a), (b) and (c). Discuss
- 3. Decarburisation of steel
Options- A. is the removal of carbon from iron carbide (Fe3C).
- B. affects its crystalline structure.
- C. is favoured by CO2.
- D. all (a), (b) and (c). Discuss
- 4. Reheating furnace (pusher type) is used for heating
Options- A. ingots
- B. slabs
- C. steel coils
- D. steel sheets Discuss
- 5. In salt bath furnace, heat is transferred to the charge mainly by
Options- A. conduction
- B. convection
- C. radiation
- D. none of these Discuss
- 6. The resistance furnace produces heat by the
Options- A. electric arc struck between electrodes and the charge.
- B. flow of current through a heating element.
- C. combination of induced current and skin effect.
- D. none of these Discuss
- 7. If the flame is produced under the hearth and then sweeps up into the heating chamber, this is called a/an __________ furnace.
Options- A. sidefired
- B. underfired
- C. covered
- D. recirculating Discuss
- 8. Operation of blast furnace stove is based on the principles of a __________ furnace.
Options- A. regenerative
- B. recuperative
- C. both (a) and (b)
- D. neither (a) nor (b). Discuss
- 9. A refractory wall separating the stock and the source of heat is provided in a
Options- A. updraft kiln
- B. muffle furnace
- C. continuous furnace
- D. none of these Discuss
- 10. Amount of coal lost in ash particle, which is carried through the boiler system, depends upon the
Options- A. physical nature, ash content and fineness of the coal.
- B. amount of excess air supplied and load on the boiler.
- C. type of burner and combustion chamber.
- D. all (a), (b) and (c) Discuss
Furnace Technology problems
Search Results
Correct Answer: premix
Correct Answer: all (a), (b) and (c).
Correct Answer: all (a), (b) and (c).
Correct Answer: slabs
Correct Answer: conduction
Correct Answer: flow of current through a heating element.
Correct Answer: underfired
Correct Answer: regenerative
Correct Answer: muffle furnace
Correct Answer: all (a), (b) and (c)
Comments
There are no comments.More in Chemical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.