CHAPTER 14 REACTOR SYSTEMS TEST
1. Uses a reactor to make one large molecule out of two small molecules.
a. isomerization
b. alkylation
c. hydrodesulfurization
d. catcracking
2. Which of the following is not a chemical reaction:
a. replacement
b. neutralization
c. combustion
d. distillation
3. Uses a multi-stage reactor system to boost yields of gasoline from crude oil.
a. fluid catalytic cracking
b. hydrocracking
c. hydrodesulfurization
d. fluid coking
4. Suspend solids in a reactor by counter-current flow of gas. Particle segregation occurs
over time as heavier components fall to bottom and lighter ones move to the top.
a. alkylation
b. fluidized bed reactor
c. regeneration
d. continuous batch reactor
5. A three tube reactor surrounded by a heated jacket.
a. alkylation
b. isomerization
c. tubular reactor
d. hydrocracking
6. Sweetens products by removing sulfur.
a. catcracking
b. fluid coking
c. reformer
d. hydrodesulfurization
7. Given the chemical equation: H3PO4 + 3 NaOH —-»Na3PO4 + 3H2O
If you are told by your supervisor to increase the set point from 98 GPM to 1470 GPM of
phosphoric acid H3PO4 in the above equation, how many gallons per minute of sodium
hydroxide NaOH will you need to keep the process balanced?
a. 3270 gallons
b. 810 gallons
c. 2460 gallons
d. 1800 gallons
8. _______________________ adds raw materials incrementally to the reactor. Finished
products flow out while raw materials flow in and are exposed to catalysts, pressure,
liquids, or heat.
a. batch operation
b. continuous reactor operation
9. 2Na2O + 2HOCl —» 2NaOCl + H2O. Is this chemical equation balanced?
a. balanced
b. not balanced
List reactant elements. List the product elements.
10. List the five basic reactor types:
a.
b.
c.
d.
e.
11. 2H3PO4 —» H2O + H4P2O7. Is this chemical equation balanced?
a. balanced
b. not balanced
12. N2 + 3H2 ————» 2NH3
168 lbs/hr 36 lbs /hr 204 lbs/hr
The Nitrogen Tk-100 has a capacity of 32,256 with a minimum cushion of 4,032. The
hydrogen Tk-200 has a capacity of 6,912 with a minimum cushion of 864. The reactor
can handle 39,168 lbs/hr before the catalyst needs to be regenerated. The Ammonia Tk–
300 is protected with a safety valve and has a capacity of 34,200. TK-100 and TK-200
are refilled every 7 days. The limiting factor in this system is?
a. TK-100
b. TK-200
c. The reactor
d. TK-300
Please Draw this Ammonia unit.
13. The two most common forms of chemical bonding are:
a. covalent and ionic
b. covalent and numeric
c. ionic and electromagnetic
d. covalent and memonic
14. The major difference between the two most common forms of chemical bonding are:
a. neutral vs electrically charged
b. endothermic vs. exothermic
c. reactive vs. equilibrium
d. all of the above
15. N2 + 3H2 ————» 2NH3
280 lbs 60 lbs 340 lbs
? lbs ? lbs 510 lbs
What are the new settings for nitrogen and hydrogen?
a. 420 nitrogen, 90 hydrogen
b. 187 nitrogen, 40 hydrogen
c. 28 nitrogen, 6 hydrogen
d. 630 nitrogen, 135 hydrogen
16. How does heat and pressure effect a chemical reaction?
a. enhances
b. slows down
c. no effect
d. a & b
17. Alkylate is a superior _____________ product that is used in blending unleaded
gasoline.
a. anti-knock
b. cleaning agent
c. high-octane
d. a & c
18. An exothermic reaction:
a. requires heat
b. requires energy
c. gives off heat
d. destroys matter
19. During _______________________, operation gas oil enters the reactor and is mixed
with a superheated powdered catalyst. The term cracking is applied to the process
because during vaporization the molecules literally split and are sent to a fractionation
tower for further processing.
a. hydrocracking
b. fluid catalytic cracking
c. fluid coking
d. Chemical synthesis
20. All of the following are active catalysts except:
a. intermediate type
b. adsorption
c. inhibitor
d. poisoned
21. CH4 + 2O2 ———————» CO2 + 2H2 O
1600 lbs ? ? ?
a. 7400, 5400, 4600
b. 6600, 4600, 3800
c. 5400, 3400, 2600
d. 6400, 4400, 3600
22. Balance the following equation:
Fe + Cl2 → FeCl3
23. Given the chemical equation: H3PO4 (98 GPM) + 3 NaOH (120 GPM) —-»Na3PO4
(164 GPM) + 3H2O (54 GPM)
If you change (3 NaOH) to 1800 GPM, how much water will be produced?
a. 108 GPM
b. 270 GPM
c. 540 GPM
d. 810 GPM
24. A process that uses a reactor to scrape the bottom of the barrel and squeeze light products
out of reside.
a. alkylation
b. hydrocracking
c. hydrodesulfurization
d. fluid coking
25. During reactor operation process technicians are responsible for all of the following
except:
a. establishing correct flow or feed rates to the reactor
b. ensuring correct temperature, pressures and level
c. monitoring and controlling reaction rates (time)
d. ensure specified mixing or agitation is occurring (pumps or mechanical agitators)
e. monitor and maintain auxiliary equipment
f. calculate complex raw materials mass relationships and product economics
26. Reaction rates are impacted by:
a. heat and surface area
b. concentration
c. pressure & flow rates
d. all the above
27. _________________ take two small molecules of iso-butane and olefin (propylene,
butylenes or pentylenes) and combines them into one large molecule of high-octane
liquid called alkylate.
a. alkylation
b. alkylate isomerization
c. poly-olefin unit
d. iso-butane olefin unit
28. The reactor bed in a hydrocracker is ____________.
a. fixed
b. fluidized
29. A 3500 pound barrel has a 37% catalyst solution. What is the weight of the catalyst?
a. 129.5 lbs
b. 1295 lbs
c. 2205 lbs
d. 1400 lbs
30. What is the primary purpose of a reactor?
a. to combine chemicals and make new products
b. to make, break, or make and break chemical bonds
c. produce heat and pressure
d. a & b
31. In a ________________ raw materials are carefully weighed and added to a reactor. The
raw materials are mixed and allowed to react. After a pre-determined amount of time the
batch is dumped and a new batch mixed.
a. continuous batch operation
b. batch operation
32. The fixed medium in a reactor remains in place as raw materials pass over it.
a. fixed bed reactor
b. continuous batch
c. batch reactor
d. fluid coking
33. A good rule of thumb for chemical reactions is that the speed with which two chemicals
react:
a. doubles for each 5ºF increase in temperature
b. Triples for each 10ºC increase in temperature
c. doubles for each 10ºF increase in temperature
d. doubles for each 10ºC increase in temperature
34. If 10% of the chemicals in a reaction form products in one hour at 50ºC, then ________%
will form products at 60ºC in one hour.
a. 5%
b. 10%
c. 20%
d. 50%
35. An inhibitor is a substance that:
a. reacts with catalyst making it unstable
b. limits or prevents the reaction of two or more chemicals
c. may hinder the reaction by reacting with some raw materials before reaction can
take place.
d. all the above
36. In a liquid phase reaction, pressure can ______________ the reaction rate.
a. increases
b. linked to readiness of reactants/products to vaporize
c. decreases
d. all the above
37. In a gaseous reaction, pressure forces molecules to ______________.
a. move closer together
b. collide more frequently
c. decreases
d. a & b
38. In a gaseous reaction, the higher the pressure the ________ the reaction rate.
a. slower
b. higher
c. more eratic
d. b & c
39. Reactors are equipped with a number of safety features. Please list four.
39-a.
39-b.
39-c.
39-d.
Answer Key CHAPTER 14 Reaction Systems