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Anonymous Poster

Design of a scrubber system

02/04/2008 2:09 AM

Hello everyone, I need assistence in designing a scrubber system for a packing station of our plant. I aim to use air-jet system as means to curb hazardous vapours such that can treat them once submerged/contained in water and release less hazardous material to atmosphere. My problem is in designing the vapour-fan speed as will need to drow/suck at the vapours but with adequate speed such that don't end up pulling the product itself(although the product(s) is mainly in liquid states). Another problem is that my extracting arm need to be flexible or movable as th scale through which we pack is movable, and even if I fix the scale, when repacking from one container to the next one needs to extract the vapours from where one feels most exposed or at risk. I need some form of a reference book or site I can use. Your response will be highly appreciated. 'A man who want to remove a mountain starts by removing small stones!'

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Guru
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#1

Re: Design of a scrubber system

02/04/2008 4:16 AM

The first stone to move is the nature of the vapours. It would be no good trying to remove organics with a scrubber designed for hydrogen sulphide, for example.

  • What is in the vapour phase?
  • What concentration is present?
  • What are the occupational exposure limits for this substance?
  • What is the local environmental limit for this substance?
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Guru

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#3
In reply to #1

Re: Design of a scrubber system

02/05/2008 9:53 AM

Break the problem into smaller pieces.

1. you need a vapor capture system, to collect vapor without pulling too much plant air or product.

2. You need a duct system to carry vapor from source to scrubber

3. you need to design the scrubber.

For references, I usually use and old NIOSH "Industrial Ventilation" handbook and "Fan Engineering" that was published by Buffalo Forge fan company. NIOSH still exists and will sell a more current version of its book. Check Google.

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Guru
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#2

Re: Design of a scrubber system

02/05/2008 12:10 AM

You can get all the information you need at the following website:

http://yosemite.epa.gov/oaqps/eogtrain.nsf/DisplayView/SI_412C_0-5?OpenDocument

It gives you a detailed explanation of how air scrubbers work and even how to design them, down to the equations involved. I certainly found it most helpful. And the best part of it all is that you can download all the ebooks posted there for free.

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