Columns form an integral aspect of chemical and thermal separations. The efficiency of the separation process, however, depends on various internal components. So, let’s look at the internal components of column internals.

Column Internals

What are Column Internals and types of Components

Below is a brief explanation of column internals and their components that aid various aspects of the separation process and catalyze efficient separation.

  1. Mist Eliminator

The mist eliminator is located at the top of the column. It helps prevent entrainment at the vapor outlet. The mist eliminator comprises a packing or an inert fabric to prevent entrainment.

  • Liquid Distributor

Liquid distributors are responsible for the uniform dispensing of the incoming fluid over the column cross-section. The type, like a tube, nozzle, channel, etc., may depend on the varying properties of the liquid involved.

  • Wall Wiper

The wall wiper’s duty is to detect the liquid from the column’s inner wall back into the packing. The process helps optimize the column’s overall efficiency.

  • Support Grid

As the name implies, a support grid made of various corrosion-resistant materials helps hold the structure firmly. Superior-quality support grid can help retain most of the gas flow cross-sectional area and reduce the pressure drop.

  • Steam Intake

Even distribution of steam increases the efficacy of the use of the packing. It reduces the overall height of the column.

  • Structured Packing

In applications that demand a high level of separation efficiency, structured packing helps proves advantageous.

High-quality structured packing comprises alternating arranged corrugated plates of glass with flow channels inclined by a particular angle. The glass plates are integrated to keep only the borosilicate glass connected with the process fluids.

  • Vortex Breaker

A vortex breaker is located at the column’s bottom. It helps drain the required amount of liquid and prevent the run-down liquid from entering the steam inlet.

  • Packing

Packing is made up of borosilicate glass structures. They are used to leverage their corrosion-resistant properties and temperature allowance. Packing is available in various other materials, based on the process requirements.

  • Collectors and Redistributors

Collectors and redistributors are placed underneath the packing. They collect the run-down liquid and remove it from the column or return it to the distributor.

Various Factors to Consider While Designing a Distillation Column

Here are some factors to consider while designing a distillation column.

  • Calculate the feed and product flow to determine the column’s size
  • The designers must also consider the vapor and liquid loading inside

It signifies the vapor traffic and the amount of liquid passing through the various sections inside the column. The connection between the vapor and liquid flow enables the actual separation to take place.

  • Usually, there exists a heating source that creates vapor inside a column. The process can be completed through direct heating or through a reboiler.
  • You can operate the column at varying temperatures and pressures based on the specific separation requirements.

Design Custom Column Internals with S-Cube

S-Cube is one of the top companies manufacturing structured packing and column internals for companies in the chemical domain. Our column internal solutions include structured packing and random packing.

We provide column internals for various applications like multi-beam support, liquid distributor, antenna type, channel type, etc. Connect with us to know more about +919960400912 or write to us at

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