Pot and Column Stills (O-1) Flashcards
Most pot stills are made from _____ because?
-Copper
-Great heat conductor and easy to shape
Most modern pot stills are heated using?
Stream
•internal steam coils
OR
•External steam jacket
The POT in a pot still has has what function?
Holds the liquid that will be distilled
What is the SWAN NECK of a pot still?
A section of tubing between the pot and still head
What is the STILL HEAD in a pot still?
The top of the swan neck
What is the function of the the LYNE ARM?
Tubing that links the still head to the condenser
What is the purpose of the CONDENSER in a pot still?
It converts the vapor back into a liquid
How does a shell and tube condenser work? And what spirit uses it?
Vapor enters at the top, comes in contact with a coolant tube (water) that causes vapor to condense back into a liquid that flows from the bottom
•Cognac
Between a worm tub or shell and tube, which one is most commonly seen today?
Shell and tube
A fermented alcoholic liquid has to be distilled at least __in order to produce a spirit?
2 times out of
Which still is a batch process that produces low rectification with a medium to pronounced aroma?
Pot still
What is the aim of the first distillation?
•Remove some water and other non volatile liquid waste
•Distill and collect volatile liquid from 10% ABV to 25-30% (Low Wines)
What are the basic steps of how first distillation works?
- 10% ABV ethanol+water
- Boiled & vapors rise up into condenser
3.Flows until 1%ABV and low wines are collected (25-30% ABV) - Liquid remaining is discarded
What is the aim of second distillation?
Create a liquid the distiller can sell by selecting and concentrating Group 2 fractions (ethanol and fractions with similar boiling point)
What are steps in 2nd distillation?
- Distill low wines with heads and tails from previous batch
- Boiled and condensed
- Selections over time
1.Heads (concentrated group 1 factions
2.Heart (75% ABV concentrated group 2 factions
3.Tails (concentrated group 3 factions) - Discard waste
What is the order in which liquid is captured in 2nd distillation?
- Heads (Group 1 fractions)
- Heart (75% ABV concentrated group 2 fractions
- Tails (Concentrated group 3 fractions)
What are the parts of a Column Still?
•Steam heat source
•Plates (all have in common)
•Downcomer
•Bubble Cap
What is the aim of using plates in a column still? And how does it work?
maximize reflux
•Vapor forced through bubble cap onto plate
•Greater concentrations rise and less volatile fall.
•
What is the aim of continuous distillation?
Managing the flow of liquid and vapor through the still to keep collecting spirit with consistency still and quality.
Column Still Distillation steps:
- Constant pre-heated alcoholic liquid enters bottom half of still
2.constant flow of vapor rising and liquid falling
•Group 1 fractions: (lower boiling point than ethanol) will flow out as heads
•Group 2 Heart will be selected a few plates below Heads
•Group 3 (higher boiling points than ethanol) drained off lower plate as tails. - Waste removed
