Packed column internals
Sponsored Links
This presentation is the property of its rightful owner.
1 / 9

Packed Column Internals PowerPoint PPT Presentation


  • 159 Views
  • Uploaded on
  • Presentation posted in: General

Packed Column Internals . Packed Column. Factors Favoring P acked C olumns. Vacuum systems: Low pressure drop Small diameter column Corrosive system Foaming Lower liquid hold-up Batch distillation. Objectives of Packing D esign.

Download Presentation

Packed Column Internals

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Packed Column Internals


Packed Column


Factors Favoring Packed Columns

  • Vacuum systems: Low pressure drop

  • Small diameter column

  • Corrosive system

  • Foaming

  • Lower liquid hold-up

  • Batch distillation


Objectives of Packing Design

  • To attain maximum mass transfer and capacity with minimum pressure drop by improving

    • Aerodynamic properties

    • Liquid distribution

    • Gas/liquid contact


Properties of Packing

  • High surface area per volume

  • Hood wettabilityand good resistance to the pressure (high strength).

  • Pressure drop should be desirably low. When the size increases, both mass transfer and pressure drop decrease. The optimal size and shape is the one which compromise both factors.


Materials

Nowadays metal and plastic packing have replaced the ceramic

  • Ceramic elements are still used when corrosive chemicals are involved and good wettability is required

  • Metal elements provide good wettability with the advantage of having higher strength

  • Plastic, usually polypropylene, is largely used because of low cost but they fail in case of high temperature. Besides they have poor wettabiity.


Packing Types

  • Random or dumped packing

  • Structured packing: layers of wire mesh/corrugated sheets

  • Grids: open lattice structure


Random Packing


Comparison


  • Login