packed column internals n.
Download
Skip this Video
Download Presentation
Packed Column Internals

Loading in 2 Seconds...

play fullscreen
1 / 9

Packed Column Internals - PowerPoint PPT Presentation


  • 227 Views
  • Uploaded on

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.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Packed Column Internals' - pier


Download Now 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
factors favoring p acked c olumns
Factors Favoring Packed Columns
  • Vacuum systems: Low pressure drop
  • Small diameter column
  • Corrosive system
  • Foaming
  • Lower liquid hold-up
  • Batch distillation
objectives of packing d esign
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
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.
m aterials
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
Packing Types
  • Random or dumped packing
  • Structured packing: layers of wire mesh/corrugated sheets
  • Grids: open lattice structure
ad