1. The reformer developed by Esso was named as Hydro-former, true of false?
a) true
b) false
Explanation: Esso named it Hydro-former since there is a recycle of rich hydrogen gas.
2. 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
Explanation: High pressure is being used for isomerization to take place.
3. 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
Explanation: Since the isomerization process requires high pressure, hence in FCR higher pressure is used.
4. 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
Explanation: Temperature is maintained high in order to maintain high temperature in the regenerator for regeneration of catalyst.
5. 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
Explanation: 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.
6. What kind of heat reaction is cracking reaction?
a) Exothermic
b) Endothermic
c) Constant
d) None of the mentioned
Explanation: Since naphtha is long chain, is requires energy to break the bond into smaller groups.
7. At what rate the coarse sand is circulated along with the feedstock?
a) 5 times
b) 10 times
c) 15 times
d) 20 times
Explanation: In order to maintain the temperature and not let the sand particles break down, high flow rate is maintained.
8. What is installed for for maintaining good contact across the fluidized bed?
a) Baffles
b) Cyclone separators
c) Electrostatic precipitators
d) All of the mentioned
Explanation: It acts as obstruction and creates turbulence inside the bed.
9. How are the formation of large bubbles can be eliminated?
a) Baffles
b) Cyclone separators
c) Electrostatic precipitators
d) All of the mentioned
Explanation: They breaks down the bubbles into smaller parts
10. Apart from steam, what can be used to heat the crude oil?
a) Cracked oil
b) Oxygen
c) Nitrogen
d) Excess of crude oil
Explanation: Cracked oil is already at high temperature which helps in increasing the temperature of feed crude oil.