5 replies to this topic

[ksagarzazu]

We have a scrubber fan in our outlet vent pipe of a reaction mixer. The reaction has as product CO2, H2O, and the decomposition of Nitric acid NO2 and O2. The gas is a wet gas that goes into a scrubber. The fan has been installed in the lower point of the pipework, therefore with ambient temperatures we are getting some condensation. Is there anything out there in the market sort of like steam trap that we could install before the fan to trap the condensate?

 

Would a knockout pot work? or a condensate pot? something like that?

 

Much appreciate all the help

Edited by ksagarzazu, 25 February 2025 - 04:06 AM.

[breizh]

Hi,

What is the problem for the gas to be saturated with water? It will be the same at the outlet of the scrubber.

Is it a problem with the material construction of the fan? If yes choose another material like "plastic".

Initially I was thinking to relocate the fan at the outlet of the scrubber.

Edit: 

Consider the link attached, you may want to contact them.

https://www.progecos...s-fxp-type.html

Breizh 

[latexman]

A knockout pot would work, but is that the optimal solution and location for the equipment?  Like Breizh, my first thought was to relocate the fan downstream of the scrubber and induce the vapor-liquid stream into the scrubber.  There are many commercially available vapor-liquid separators out on the market.  Look into a line-type separator, or inline separator.  There are many varieties.  This issue seems worthy of a proper engineering study. 

[ksagarzazu]

There is not issues with the gas been saturated with water, the problem is that is condensating just before the fan so the fan is leaking. So i thought that installing a condensate pot before the fan could be cheaper than relocating the fan, the fan as well has been sized to be in that location, potentially moving it downstream of the scrubber will need a bigger fan. 

 

Thanks so far for the help, much appreciated!

[latexman]

There is not issues with the gas been saturated with water, the problem is that is condensating just before the fan so the fan is leaking. 

 

Alternative ideas.  Insulate the lines (better) before the fan to decrease/eliminate the affect of ambient temperatures?  Change fan to a liquid ring pump?  Just throwing ideas against the wall to see if any stick!

[breizh]

Hi,

You can use a pot equipped with LSL and LSH being forks to actuate a solenoid valve to discharge the liquid to a safe location (because there is a potential risk to carry hazardous/toxic gas). 

Similar set up is used to drain moisture from compressed air.

 

Breizh