Deck 14: Reaction Systems

Question 1

Uses a reactor to make one large molecule out of two small molecules.

A) isomerization
B) alkylation
C) hydrodesulfurization
D) catcracking

Answer 1

alkylation

Question 2

Which of the following is not a chemical reaction:

A) replacement
B) neutralization
C) combustion
D) distillation

Answer 2

distillation

Question 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

Answer 3

hydrocracking

Question 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

Question 5

A three tube reactor surrounded by a heated jacket.

A) alkylation
B) isomerization
C) tubular reactor
D) hydrocracking

Question 6

Sweetens products by removing sulfur.

A) catcracking
B) fluid coking
C) reformer
D) hydrodesulfurization

Question 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

Question 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

Question 9

2Na₂O + 2HOCl --» 2NaOCl + H₂O. Is this chemical equation balanced?

A) balanced
B) not balanced

Question 10

List the five basic reactor types:

Question 11

2H₃PO₄ --» H₂O + H₄P₂O₇. Is this chemical equation balanced?

A) balanced
B) not balanced

Question 12

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

Question 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

Question 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

Question 15

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

Question 16

How does heat and pressure effect a chemical reaction?

A) enhances
B) slows down
C) no effect
D) a & b

Question 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

Question 18

An exothermic reaction:

A) requires heat
B) requires energy
C) gives off heat
D) destroys matter

Question 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

Question 20

All of the following are active catalysts except:

A) intermediate type
B) adsorption
C) inhibitor
D) poisoned

Question 21

Find?

A) 7400, 5400, 4600
B) 6600, 4600, 3800
C) 5400, 3400, 2600
D) 6400, 4400, 3600

Question 22

Given the chemical equation: H₃PO_{4 (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

Question 23

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

Question 24

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

Question 25

Reaction rates are impacted by:

A) heat and surface area
B) concentration
C) pressure & flow rates
D) all the above

Question 26

_________________ 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

Question 27

The reactor bed in a hydrocracker is ____________.

A) fixed
B) fluidized

Question 28

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

Question 29

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

Question 30

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

Question 31

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

Question 32

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

Question 33

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%

Question 34

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

Question 35

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

Question 36

In a gaseous reaction, pressure forces molecules to ______________.

A) move closer together
B) collide more frequently
C) decreases
D) a & b

Question 37

In a gaseous reaction, the higher the pressure the ________ the reaction rate.

A) slower
B) higher
C) more eratic
D) b & c

Question 38

Reactors are equipped with a number of safety features. Please list four.