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VOC abatement in Activated Carbon

VOC abatement in Activated Carbon

VOC abatement in Activated Carbon

Good Morning All

Is there a simple 'Rule of Thumb' for estimating the volume of an activated carbon bed, based upon the VOC loading of the airstream ?
The VOC in my case is Ethanol in gaseous form, resulting from a spray coating system, which is exhausted to atmosphere via an exhaust fan and stack, after passing through a dust filter.
To give some numbers:
- Flow = 1200 scfm, VOC loading = 160 ppmv, Working Temp = 90 deg F
or in S.I. = ( c. 750 Nm3/hr & 300mg / Nm3 VOC @ 30 deg C )
Ethanol is 46 g/mol
What area or mass of Activated Carbon should I be considering for VOC removal ? I would like to assume a minimum of 500 working hours before replacement or regeneration.

All advice gratefully received.



RE: VOC abatement in Activated Carbon

Consider the resource attached.
note :
1:AC bed is subject to self-ignition when the amount of organic is reaching is critical mass . A temperature monitoring is needed 24/7 .
2:In some countries disposal of activated carbon is not possible , make sure you or your supplier can treat or dispose the material after use .
3: Why not considering a wet scrubber ? here again you need to be able to eliminate the spent solution .

Hope this is helping you .

RE: VOC abatement in Activated Carbon

Thanks Pierre for your reply, and for the interesting attachment.



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