Fluidization Engineering test on “Fluid Catalytic Reforming”.
1. What do you mean by catalytic reforming?
a) Combining of higher hydrocarbon
b) Break down of higher hydrocarbon
c) Chemical reaction
d) Increases rate of reaction
Answer: a
Clarification: In reforming operation a light hydrocarbon feed isomerizes to produce higher hydrocarbon.
2. In SOD hydro-former, what are the temperatures in reactor and regenerator?
a) 483 and 594 degrees
b) 594 and 483 degrees
c) 400 and 500 degrees
d) 500 and 400 degrees
Answer: a
Clarification: Since cracking of naphtha requires high temperature and much higher temperature for catalyst regeneration.
3. What is the typical octane number of feed naphtha in the SOD hydro-former?
a) 30 to 50
b) 5 to 10
c) 50 to 70
d) None of the mentioned
Answer: a
Clarification: Based on the experimental data, the feed octane has been decided.
4. What is the yield percentage of the naphtha feed in SOD hydro-former?
a) 70 to 90%
b) 5 to 10%
c) 20 to 40%
d) 50 to 60%
Answer: a
Clarification: Based on the experimental data, the percentage of yield has been found.
5. What is the octane number of gasoline after the process in SOD hydro-former?
a) 75 to 100
b) 20 to 40
c) 50 to 70
d) None of the mentioned
Answer: a
Clarification: Based on the experimental data, range of octane number has been found.
6. The reformer developed by Esso was named as Hydro-former, true of false?
a) True
b) False
Answer: a
Clarification: Esso named it Hydro-former since there is a recycle of rich hydrogen gas.
7. What is the optimum range of operating pressure inside the Hydro-former?
a) 14-15 atm
b) 1-5 atm
c) 5-10 atm
d) 10-12 atm
Answer: a
Clarification: High pressure is being used for isomerization to take place.
8. In which system high pressure is used, Fluidized Catalytic Cracking(FCC) or Fluidized Catalytic Reforming(FCR) or Fluidized Combustion Chamber(FCCh)?
a) FCC
b) FCR
c) FCCh
d) All of the mentioned
Answer: b
Clarification: Since the isomerization process requires high pressure, hence in FCR higher pressure is used.
9. Hydrogen-rich recycle gas in the SOD hydro-former is maintained temperature about 650 degrees before sending it to regenerator, true or false?
a) True
b) False
Answer: a
Clarification: Temperature is maintained high in order to maintain high temperature in the regenerator for regeneration of catalyst.
10. Why is it necessary to place cooling coils in the regenerator of Hydro-former?
a) High carbon burning
b) To maintain temperature in regenerator
c) Highly Exothermic reactions
d) All of the mentioned
Answer: d
Clarification: Since more burning of carbon takes place than required for reforming process, the temperature need to be controlled with the help of cooling coils in the regenerator.
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