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Packed Tower Scrubber

Wetted packed towers are the simplest and most commonly used approaches to gas scrubbing.

They can be designed for very high efficiencies with relatively low capital and running costs. The low pressure drop associated with packed bed scrubbers permits the use of smaller more economical fans. 

Although efficiency may be affected, a packed tower will usually function when gas or liquor flows vary from its original design parameters.

Key Information

  • Simple gas scrubbing system
  • Large wetted area method to remove contaminants from gas flow
  • Uses loose-filled random packing
  • Low running costs and capital investment
packed-tower-scrubbing---typical-wet-scrubber

The Process

The principle of this type of scrubber is to remove contaminants from the gas stream by passing the stream through a packed structure which provides a large wetted surface area to induce intimate contact between the gas and the scrubbing liquor.

The contaminant is absorbed into or reacted with the scrubbing liquor.

The reactivity between the contaminant and the scrubbing liquor influences the system designer’s determination of gas and liquor flow and the height and diameter of the packed bed.

A demister is fitted at the top of the tower to prevent entrainment of droplets of the scrubbing liquor into the extraction system or stack.

Tower Packings

The packing of the tower is normally a proprietary loose fill random packing designed to:

  • Encourage dispersion of the liquid flow without tracking
  • Provide maximum contact area for the ‘mass transfer’ interaction
  • Offer minimal back pressure to the gas flow

Speak to our sales team to find out more.

+44 (0)1366 389600

sales@forbesgroup.co.uk

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