Column Packing

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Column Packing
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Introduction

• In all column systems, packing's can provide
  optimal performance only when complemented
  properly designed tower distributors, collectors,
  supports, and other columns internals for optimum
  liquid-vapor distribution to the packed beds.
• Columns are used for distillation, gas
  absorption and liquid-liquid extraction. The
  gas-liquid contact of the packed column is
  continuous as in the case of a column, not
  stopped. The liquid flows into the column over
  the packing surface and the stream moves.

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Factors Of Packed Column

• Vacuum system Low Pressure Drop
• Small Diameter Column
• Corrosive System
• Foaming
• Lower Liquid Hold-Up
• Distillation

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Column Packing Design Procedures

• Select packing type and size
• Determine the column height for the specified
  separation
• Determine the column diameter (capacity). To
  process liquid and vapor flows
• Select and design the internal functions of the
  column packing support, liquid distributor,
  redistributors, dispenser plates for extraction
  columns.

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Objectives Of Packing Design

• The distillation column is operated at a steady
  reflux ratio.
• Perform the mass balance calculation in the
  distillation column.
• Performance Comparison of Packaging and Tray
  Column for Distillation Process.

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Properties Of Packing

• High surface area per volume
• The pressure drop should be a desirable low level.

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Packing Material

• Ceramic - High wettability, corrosion resistance
  at high temperature, optimal strength
• Metals - Excellent strength and excellent
  wetting
• Plastics - They are inexpensive and have
  excellent strength, but they are less wettability
  at low liquid velocities.

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Advantages Of Packed Column

• The column packing is more suitable for handling
  the foaming system.
• Packed columns are generally cheaper than
  equivalent plate columns
• It is always difficult to install plates and
  packed columns should be considered for small
  diameters
• Low pressure drop than tray columns
• Pickings can be manufactured for column diameter
  above 25 mm
• Lower capital, operating and maintenance costs
• Simple structure
• Corrosive solvents can be handled by corrosion
  resistant packaging materials
• It has better mass transfer than spray columns

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Types Of Column Packing

• Random Packing- Random packing is the packing of
  a specific geometric shape that is discarded and
  randomly oriented in a tower.
• Structured Packing- Structured packed offers
  30 capacities higher than random packed for
  equal efficiency up to 50 higher at the same
  capacity.
• Grid Packing- Systematically placed packings use
  an open lattice structure. The device consists of
  panels that promote mass transfer and improve
  tear removal.

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Contact Us

• Address S Block, J-25 MIDC, Bhosari, Pune
  411026, INDIA.
• Phone  [phone]
• Email info_at_finepacindia.in
• Web www.finepacindia.in

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