N2 Blankets-Removing VOC's 1

[Chazadd]

I am trying to design a storage vessel for a VOC, and need to blanket with N2. On refilling the vessel i will be required to clean the N2 b4 releasing to the atmosphere.
My plan is to condense the VOC. Does anyone know of a
company which makes storage tanks with this sort of extra added on.

Chaz

 

[MJCronin]

Chaz,

What you are looking for is called a "knock-back" or "vent condenser". It is not a feature of the tank, but typically added as a seperate heat exchanger.

Both the "shell and tube" as well as the "spiral" type of heat exchangers have been used in this duty. "Shell and Tube" models typically have the tubes oriented vertically.

The heat exhanger most often is directly mounted (vertically) on the tank/reactor nozzle..... so planning for this feature when the tank is being specified is important.

A "spiral" HX ( such as those manufactured by Alfa Laval or APV) are used when the liquid condensed is viscous

I hope that this helps

MJC

 

[saidsaz]

vessels with knock back exchanger inserted inside vessel is very common too...and can be much cheaper for your application ....

 

[MortenA]

One of the leading manuf. of adsoption unit for relaiming of VOC are Cool Sorption. Check this link:

http://www.coolsorption.com/

Best Regards

Morten