U01503 Separation Processes and Process Calculations

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U01503- Separation Processes and Process
Calculations

• Separation Processes
• Dr Jennifer Skilling
• j.skilling_at_ed.ac.uk

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• Main Themes
• Introduction to separation
• Absorption and Stripping
• Distillation
• Solvent Extraction

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Revision from Chem Eng 1

• Separation needs more than one phase.
• A phase is
• A separate part of a heterogeneous body or
  system.
• The key to separation is finding a way to get two
  phases with different compositions from a
  mixture.

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Mass balances

• Mass balance is key to all separation
  calculations
• what goes in must come out!

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Product 1, P1
Feed, F
Product 2, P2
F P1 P2
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Product 1, P1
Feed, F
xP1
xF
Product 2, P2
xP2
F P1 P2 - Overall balance FxF P1xP1 P2xP2
Component balance