Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Distillation & Evaporation > Distillation > Flashcards

Distillation Flashcards

(80 cards)

Start Studying
1
Q

What is the purpose of the Rectifier Column?

A

Purify the Beer Column overhead vapor to produce 190 proof ethanol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the heat sources to the Rectifier Column? (2)

A

Beer Column overhead vapors
Side Stripper vapors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Where do the Beer Column Bottoms flow to?

A

Whole Stillage Tank

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the temperature range of the Beer Column at the top and bottom?

A

Top- 160-165°F
Bottom- 185-190°F

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Where do the Rectifier Column vapors flow to?

A

190 Proof Vacuum Condenser

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the main feeds to the Rectifier Column? (2) Where do they enter?

A

Beer Column overhead vapors
Side Stripper vapors
The bottom of the Rectifier Column

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the control points of the Beer Bottoms Pump? (2)

A

Pressure
Flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What general column component holds a level of liquid and uses push and non-moveable valves for the purpose of using different boiling point temperatures to separate a liquid mixture?

A

Column trays

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the purpose of the Beer Column?

A

Separate whole stillage from ethanol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the main purposes of the Beer Bottoms Pump? (2)

A

Transfer water and whole stillage from the bottom of the Beer Column to the Whole Stillage Tank
Transfer a return stream back to the Beer Column to maintain level or recycle during upset conditions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are the two heat sources for the Beer Column?

A

Beer/Mash Exchanger
Direct injection of 2nd effect vapors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are the Beer Column control points? (5)

A

Pressure
Temperature
Level
Feed Flow
Base Loss

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the purpose of the metal packing in the top section of the Rectifier Column?

A

To enhance the vapor-liquid contact due to increased surface area.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Where does the Beer Column vapor flow to?

A

Bottom of the Rectifier Column

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is located below the metal packing material in the Rectifier?

A

4 distillation trays

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the importance of boiling point temperature in the distillation process?

A

Liquid mixtures can be separated into components according to their boiling point temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What components of a liquid mixture are the first to vaporize?

A

The lighter components (Less dense)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the purpose of operating the Distillation System under a vacuum?

A

Reduces the liquid component’s boiling point temperature and therefore requires less heating

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

In column trays, where is the highest percentage of ethanol found?

A

Higher in the column

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What term describes ethanol content as twice the percentage by volume?

A

Proof

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

The Distillation System is limited to what percentage/proof of ethanol?

A

95% or 190 Proof

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What does the Beer/Mash Exchanger use to preheat the beer feed to the Beer Column?

A

Liquefaction Mash

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

How many column trays is the Beer Column equipped with?

A

19

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What may lead to the formation of fusel oils? (3)

A

Low pH
High temperatures
Low yeast activity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Why are fusel oils detrimental to the Distillation System?
May cause a fusel plug in the column trays and affect efficiency
26
What is the purpose of the Fusel Draw Pump?
To draw fusel oils off of the Rectifier Column trays
27
What is the purpose of testing the fusel oil samples?
To determine the location of the fusel oil within the column
28
What is the pressure range of the Rectifier Column at the top and bottom?
Top- 5.5-6 PSIA Bottom 6-7 PSIA
29
What is the temperature range of the Rectifier Column at the top and bottom?
Top- 130-135°F Bottom- ≈150°F
30
What are the control points of the Rectifier Column? (5)
Pressure Temperature Level Flow Base Loss (Technically not measured but may affect Side Stripper base loss)
31
What is Base Loss?
The amount of ethanol that is not vaporized in a column and therefore is processed with bottoms product
32
Why is a high percentage of base loss detrimental? (2)
High base loss is potentially detrimental to down line process streams Loss of product
33
What is the purpose of the Rectifier Bottoms Pump? (2)
Transfer the Rectifier Column bottoms liquid to the Side Stripper Transfer a slip stream back to the Rectifier Column
34
What is the purpose of the return line on the discharge of the Rectifier Bottoms Pump to the Rectifier Column?
To maintain the Rectifier bottoms liquid level
35
What are the control points of the Rectifier Bottoms Pump? (2)
Pressure Flow
36
From the Fusel Draw Pump, where do the fusel oils flow?
Into the 190 proof ethanol line to storage
37
What are the control points of the Fusel Draw Pump? (2)
Pressure Flow
38
What is the purpose of the Side Stripper?
Purify the lower proof Rectifier bottoms stream
39
What are Side Stripper bottoms used for?
Cook water
40
Where do Side Stripper overhead vapors flow to?
Rectifier Column
41
What are the heat sources of the Side Stripper? (3)
Direct injection of medium to low pressure steam from the Cook Flash Vessel Optional supplemental stream from 2nd effect vapors Optional supplemental stream of plant medium pressure steam
42
Where does the Rectifier bottoms flow into the Side Stripper?
At the top of the Side Stripper
43
Where do the heat sources enter the Side Stripper?
At the bottom of the Side Stripper
44
What is the purpose of the return line on the discharge of the Side Stripper Bottoms Pump to the Side Stripper?
To maintain the liquid level of the Side Stripper bottoms
45
How many column trays does the Side Stripper utilize?
16 column trays
46
How many column trays does the Rectifier utilize?
4 column trays
47
What is the pressure range at the top and bottom of the Side Stripper?
Top- 6-7 PSIA Bottom- ≈8.4 PSIA
48
What is the temperature range at the top and bottom of the Side Stripper?
Top- 150-160°F Bottom- 180-190°F
49
What are the control points of the Side Stripper? (5)
Pressure Temperature Level Flow Base Loss
50
Other than profit loss, why is it detrimental to have a high level base loss on the Side Stripper bottoms?
Side Stripper bottoms are a component of cook water. Yeast cannot develop fully in the presence of ethanol.
51
What is the purpose of the Side Stripper Bottoms Pump?
Transfers Side Stripper bottoms to Cook Water Economizers and back to the Side Stripper During upset conditions, transfers Side Stripper bottoms to the Beer Well
52
What is the purpose of the 190 Proof Vacuum Condenser?
Provides the initial cooling/condensing of the vapors from the Rectifier Column
53
What is the purpose of the two Vent Condensers?
Condense any remaining 190 proof ethanol vapors from the 190 Proof Vacuum Condenser Sub-cool 190 proof liquid ethanol from the 190 Proof Vacuum Condenser
54
What type of heat exchanger is the 190 Proof Vacuum Condenser?
Shell and Tube
55
What type of heat exchanger are the two Vent Condensers?
Plate and Frame
56
What 5 pieces of Distillation equipment create the vacuum used in The Distillation System?
190 Proof Vacuum Condenser 2 Vent Condensers 2 Vacuum Pumps
57
What flows into the 190 Proof Vacuum Condenser? (5)
Rectifier Column overhead vapors Cooling Water Supply Non-condensable 200 proof vapors from Evaporator #1 or #2 De-pressure vapors from the Molecular Sieves Non-condensable vapors from the 200 Proof Flash Vessel
58
What are the flows out of the 190 Proof Vacuum Condenser? (2)
190 proof liquid/vapor ethanol Cooling Water Return
59
What other areas utilize the vacuum generated in the Distillation System? (2)
Evaporators Cook Flash Vessel
60
What is the control point of the 190 Proof Vacuum Condenser and the two Vent Condensers?
Temperature
61
What is the purpose of the Reflux Tank?
Collect condensed 190 proof liquid ethanol from the condensers
62
Where does 2/3 of the flow from the Reflux Bottoms Pump flow to? (2)
Rectifier Column Reflux Tank
63
Where does 1/3 of the flow from the Reflux Bottoms Pump flow to? (3)
190 Proof Ethanol Storage Tanks Sieve Vaporizer 200 Proof Flash Receiver
64
What is the purpose of the Reflux Tank return line and density indicator?
To monitor the ethanol proof. Density is a direct indication of proof.
65
What are the control points of the Reflux Tank? (3)
Pressure Temperature Level
66
What is the purpose of the two Vacuum Pumps?
Assist in maintaining the Distillation System vacuum
67
What two things do the two Vacuum Pumps transfer?
Non-condensable vapors from the Reflux Tank Vacuum seal water from the Regen Tank
68
Where do the two Vacuum Pumps flow to?
Regen Tank
69
What are the purposes of the vacuum seal water? (2)
Prevent a loss of vacuum Lubrication for the Vacuum Pumps
70
What is the purpose of the Seal Water Filters?
Remove particulates in the regen liquid to prevent the seal water lines from clogging
71
What are the control points of the Vacuum Pumps? (2)
Pressure Flow
72
Why does the Reflux Tank have a pressure valve that opens to the atmosphere?
The Vacuum pumps run at one speed. The pressure valve opens to let in atmosphere to regulate vacuum.
73
What is the purpose of the Reflux Bottoms Pump?
Transfer 190 proof liquid ethanol from the bottom of the Reflux Tank
74
What is the control point of the Reflux Pump?
Pressure
75
What is the purpose of the 190 Crossover Pump?
Maintains a high rate of flow to the Molecular Sieves by supplying the additional feed that the Sieve Feed Pump is unable to supply
76
What are the control points of the 190 Crossover Pump? (2)
Flow Pressure
77
What is the purpose of the 190, 190 Crossover, & 200 Proof Filters?
Remove particulates from liquid ethanol
78
Why are two sets of filters used with liquid ethanol?
Extra filter to put online when other filter becomes plugged and needs replaced
79
What level of differential pressure is an indication of plugged ethanol filters?
20 PSI
80
What is the control point of the 190 & 200 Proof Filters?
Pressure

Distillation & Evaporation (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions