ENCH496 Separations - Packed Column Distillation
Packed Column Distillation Quiz
Test your knowledge on packed column distillation and the key concepts that govern efficiency and design. This quiz is designed for those studying separations in chemical engineering.
Prepare to tackle questions about:
- Multi Component Distillation
- Packing Types and Efficiency
- Height Equivalent to Theoretical Plate (HETP)
What does MCD stand for?
Maximised Component Distribution
Mixed Component Distillation
Multi Component Distillation
Minimised Chemical Dilution
What is the best way to maximise efficiency of a packed column?
Maximise column volume
Minimise the column volume
Decrease packing particle size
Increase packing particle size
What does the acronym HETP stand for?
High Energy Transfer Process
Heated Ethanol Titration Permeates
High EnergyTemperature Profile
Height Equivalent to Theoretical Plat
What is the effect of spreading the feed uniformly as it enters the column?
Improves Vapour - Liquid Contact and thus efficiency
Promotes Uniform Distribution of Vapour and Liquid
Minimises Stagnant Liquid Pockets
Minimises Wetting of Packing Surfaces
All of the Above
None of the Above
What is the key effect of increasing column capacity?
Minimises resistance to vapour upflow
Increases efficiency
Distributes feed more evenly
Which packing type has a larger surface area?
Random
Structured
When HETP decreases the ____?
Efficiency Decreases
Efficiency Increases
No effect on efficiency
Cannot tell from given information
What does HTU stand for?
Helix Thermal Units
Heat Transfer Units
Hydrocarbon Transfer Units
High Temperature Unit
What causes the column to flood? (Multiple Answers)
Non Uniform Packing Particles
Fluid Velocity too slow
Fluid Velocity too high
Temperature of Column too low
Pressure Drop Across the Bed
Column Temperature too high
Which of these is NOT a symptom of column flooding?
Appearance of Liquid at the top of the column
Excessive Entrainment/Bubbling
Sharp rise in Pressure Drop
Sharp Drop in Efficiency
Increase in Column Temperature
What is the efficiency range of the trays in a fractionator?
0 - 100%
20 - 80%
10 - 90%
0 - 30%
5 - 95%
What is the ideal length for downcomer edge and top of the outlet weir?
1/4 Inch
3/4 Inch
1/2 Inch
1 Inch
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