Question 1

A ternary mixture:

Accepted Answer

A)  lighter hydrocarbons 
B)  is heavier than a ternary mixture 
C)  two or more components 
D)  three compounds in a mixture 
A)  lighter hydrocarbons 
B)  is heavier than a ternary mixture 
C)  two or more components 
D)  three compounds in a mixture D

Question 2

When a heat exchanger is used to convert all of the overhead vapors to liquid, it is called:

Accepted Answer

A)  normal overhead condenser 
B)  total reflux 
C)  total condenser 
D)  partial condenser 
A)  normal overhead condenser 
B)  total reflux 
C)  total condenser 
D)  partial condenser C

Question 3

Two basic tower designs include:

Accepted Answer

A)  packed and tray 
B)  plate and packed 
C)  bubblecap and sieve 
D)  valve and packed 
E)  a & b 
A)  packed and tray 
B)  plate and packed 
C)  bubblecap and sieve 
D)  valve and packed 
E)  a & b B

Question 4

The larger the difference between partial pressures the harder it is to separate the fractions by boiling point.

Accepted Answer

A) True 
 B)False

Question 5

-Refer to Bottom VLE graphic above. On a VLE chart the top curve is referred to as:_________________ .

Accepted Answer

Primary: high flow rate from f

Question 6

Incomplete separation of components in a mixture:

Accepted Answer

A)  overlap 
B)  puking 
C)  temperature gradient 
D)  overloading 
A)  overlap 
B)  puking 
C)  temperature gradient 
D)  overloading

Question 7

Each tray in a distillation column has a different molecular structure.

Accepted Answer

A) True 
 B)False

Question 8

What is the composition of side stream #2z?

Accepted Answer

C-8 = 10%,

Question 9

A binary mixture contains:

Accepted Answer

A)  lighter hydrocarbons 
B)  is heavier than a ternary mixture 
C)  two or more components 
D)  three compounds in a mixture 
A)  lighter hydrocarbons 
B)  is heavier than a ternary mixture 
C)  two or more components 
D)  three compounds in a mixture

Question 10

The Vapor Liquid Equilibrium diagram is primarily used for :

Accepted Answer

A)  a condition or state where the rate of evaporation (liquid changing to vapor) equals the rate of condensation (vapor changing to a liquid). 
B)  A & C 
C)  visualizing a condition where a liquid and it's vapor (gas phase) are in equilibrium with each other. 
D)  components in a binary mixture exert partial pressures that are equal. 
A)  a condition or state where the rate of evaporation (liquid changing to vapor) equals the rate of condensation (vapor changing to a liquid). 
B)  A & C 
C)  visualizing a condition where a liquid and it's vapor (gas phase) are in equilibrium with each other. 
D)  components in a binary mixture exert partial pressures that are equal.

Question 11

The lower section of the tower is referred to as:

Accepted Answer

A)  feed section 
B)  rectifying section 
C)  enriching section 
D)  stripping section 
E)  b & c 
A)  feed section 
B)  rectifying section 
C)  enriching section 
D)  stripping section 
E)  b & c

Question 12

The temperature at which a liquid boils and forms vapors is referred to as the:

Accepted Answer

A)  boiling point 
B)  specific temperature 
C)  bubble point 
D)  dew point 
A)  boiling point 
B)  specific temperature 
C)  bubble point 
D)  dew point

Question 13

Distillation columns have two major types of separation grids: plate and packing. Plate towers have the following tray types:

Accepted Answer

bubble-cap

Question 14

Using information from question 6, calculate the % component in vapor of hexane:

Accepted Answer

A)  20% 
B)  25% 
C)  30% 
D)  35% 
A)  20% 
B)  25% 
C)  30% 
D)  35%

Question 15

The Reflux Ratio is best defined as :

Accepted Answer

A)  the amount of overhead product returned to the column as reflux in relation to the amount of overhead taken off to storage. 
B)  careful control of column top temperature and product purity. 
C)  reflux rate divided by product rate 
D)  A & C 
A)  the amount of overhead product returned to the column as reflux in relation to the amount of overhead taken off to storage. 
B)  careful control of column top temperature and product purity. 
C)  reflux rate divided by product rate 
D)  A & C

Question 16

The upper section of the tower is referred to as:

Accepted Answer

A)  feed section 
B)  rectifying section 
C)  enriching section 
D)  stripping section 
E)  b & c 
A)  feed section 
B)  rectifying section 
C)  enriching section 
D)  stripping section 
E)  b & c

Question 17

High bottoms temperature in a distillation tower are controlled by :

Accepted Answer

A)  increase over head flow and decrease bottoms flow 
B)  decrease overhead flow and increase bottoms flow 
C)  stop feed flow and cut bottom temperature 
D)  open side-streams 
A)  increase over head flow and decrease bottoms flow 
B)  decrease overhead flow and increase bottoms flow 
C)  stop feed flow and cut bottom temperature 
D)  open side-streams

Question 18

List and describe the three technology periods of distillation.

Accepted Answer

batch, con

Question 19

The tray located below the inlet feed line is called the:

Accepted Answer

A)  mid section tray 
B)  pumping section tray 
C)  feed tray 
D)  valve tray 
A)  mid section tray 
B)  pumping section tray 
C)  feed tray 
D)  valve tray

Question 20

Boil-up rate is defined as:

Accepted Answer

A)  the temperature at which a liquid turns to vapor 
B)  the vapor-liquid balance returned to tower from the reboiler 
C)  the vapor-liquid reflux balance returned to tower from overhead accumulator. 
D)  the total amount of vapor moving up the column. 
A)  the temperature at which a liquid turns to vapor 
B)  the vapor-liquid balance returned to tower from the reboiler 
C)  the vapor-liquid reflux balance returned to tower from overhead accumulator. 
D)  the total amount of vapor moving up the column.

A ternary mixture:

When a heat exchanger is used to convert all of the overhead vapors to liquid, it is called:

Two basic tower designs include:

The larger the difference between partial pressures the harder it is to separate the fractions by boiling point.

-Refer to Bottom VLE graphic above. On a VLE chart the top curve is referred to as:_________________ .

Incomplete separation of components in a mixture:

Each tray in a distillation column has a different molecular structure.

What is the composition of side stream #2z?

A binary mixture contains:

The Vapor Liquid Equilibrium diagram is primarily used for :

The lower section of the tower is referred to as:

The temperature at which a liquid boils and forms vapors is referred to as the:

Distillation columns have two major types of separation grids: plate and packing. Plate towers have the following tray types:

Using information from question 6, calculate the % component in vapor of hexane:

The Reflux Ratio is best defined as :

The upper section of the tower is referred to as:

High bottoms temperature in a distillation tower are controlled by :

List and describe the three technology periods of distillation.

The tray located below the inlet feed line is called the:

Boil-up rate is defined as:

Introduction to Process Equipment

Valves

Piping and Vessels

Pumps

Compressors

Turbines and Motors

Heat Exchangers

Cooling Towers

Steam Generation- Boilers

Fired Heaters Furnaces

Instruments

Process Diagrams

Utility Systems

Reaction Systems

Extraction and Other Separation Systems

Plastics Systems

Filters

Exam 15: Distillation Systems

A ternary mixture:

When a heat exchanger is used to convert all of the overhead vapors to liquid, it is called:

Two basic tower designs include:

The larger the difference between partial pressures the harder it is to separate the fractions by boiling point.

-Refer to Bottom VLE graphic above. On a VLE chart the top curve is referred to as:_________________ .

Incomplete separation of components in a mixture:

Each tray in a distillation column has a different molecular structure.

What is the composition of side stream #2z?

A binary mixture contains:

The Vapor Liquid Equilibrium diagram is primarily used for :

The lower section of the tower is referred to as:

The temperature at which a liquid boils and forms vapors is referred to as the:

Distillation columns have two major types of separation grids: plate and packing. Plate towers have the following tray types:

Using information from question 6, calculate the % component in vapor of hexane:

The Reflux Ratio is best defined as :

The upper section of the tower is referred to as:

High bottoms temperature in a distillation tower are controlled by :

List and describe the three technology periods of distillation.

The tray located below the inlet feed line is called the:

Boil-up rate is defined as:

Introduction to Process Equipment

Valves

Piping and Vessels

Pumps

Compressors

Turbines and Motors

Heat Exchangers

Cooling Towers

Steam Generation- Boilers

Fired Heaters Furnaces

Instruments

Process Diagrams

Utility Systems

Reaction Systems

Extraction and Other Separation Systems

Plastics Systems

Filters