How Does a Mist Eliminator or Demister Pad Can Help to Separate The Gas From The Liquid?

More the contact between gas and liquid means more will be the entrainment chances. Entrainment can lead serious losses of the fluids in the operation which can turn into equipment damage as well.

demister-pad


Mist Eliminator/ Demister Pad helps to coalescing liquid droplets. This device helps to association of the smaller particles into the larger droplets which allows only gases flow out of the vessel while the liquid and moisture content gets trapped returns to the pool. Raised mist in the vapour drives role of the demister pad in process. When mist passes through the obstacles of the mesh of the mist eliminator/ demister pad, the mesh filaments helps to coalescing liquid particles and simply allows vapour to flow out. Meanwhile, size of the liquid droplets rises as per time and they’ll get detached from mesh to returning pool.

After all, the coalescing of the liquid droplets is only because of the various obstructions made into the path of the vapours where vapours strikes in the demister pad/ Mist eliminator.

As per the obstacles into the paths, the device has been classified as,

1.      Mesh Pad

2.      Plane Vane Pack

3.      Pocketed Vane Pack

Selection of Device  

Efficiency drives the process and that’s why selection of the device matters. The efficiency of the demister pad depends on pressure drop, density of fluid and device, liquid handling capacity, droplet size etc. Each parameter must be considered while selecting the device.

The Best Mist Eliminator/Demister Pad

Installation of internals in the column is ultimately defines the efficiency of the column operation. Perfectly assembly and quality assured products is the only way to get fully efficient operation.

In every process application like Evaporation, Distillation Column, Knockout Drum etc. where the gas and liquid come closer to make contact, there is an entrainment of mist droplets along with the gas. The carryover of liquid droplets can lead to serious process disturbance, inefficiencies and product loss as well. This device is used for removal of mist and liquid droplets from the gases, that’s why it’s been called as a mist eliminator. As per the particular applications, these devices have categorized in various types. Such types and designing parameters must be considered before applying the device in the operation.

Fe atures-

·         Effective separation of bigger sized liquid particles

·         Compatible with extreme temperature and pressure application

·         Low pressure drop

·         Best separation efficiency

·         Compatible with corrosive applications

·         Suitable for various aggressive media

 

Aplications-

 

·         Evaporators

·         Scrubbing towers

·         Vacuum columns

·         Absorbers

·         Oil separators

·         Sulphuric acid plants

·         Washers

·         Seawater desalination equipment

·         Flash vessel systems

·         Disitllation and rectification plants


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