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[Ra v]

Hello ,

 

To start with, we have a Liquid Argon Storage Tank with Capacity of 20MT. We use the liquid Argon to pass through a ambient vaporizer and then fill the Gaseous Argon in the Cylinders at a pressure of 200 Bars.

Now we found that,there is a loss from venting ( during safety pop-up) approximately 70 Kg/Day.

 

It is a cryogenic liquid storage tank,Please check the attached image.

 

Is there any possible chilling system to convert the gaseous Argon which can Convert the Gas to Liquid Argon to minimize the losses ??

 

 Could anyone suggest us some equipment/process to deal with this problem.

 

Regards

A Ravi

 

Attached Files

•  Liquid Argon Storage tank.pdf   79.04KB   21 downloads

[Bodhisatya]

My apprehension is that you r talking about Argon losses via the pressure control vent that is always manipulated to maintain a +ve pressure difference between the source of Liq Ar transfer and the Tank.

 

I can't understand why r u saying Safety Popup.There is no reason for the safety valve to pop,if pressure is regulated by Pressure control valves.

 

To prevent the losses of Ar generally two options are explored,but both of them might require significant modifications.

 

(a) Building an Ar condensation Coil in the inner vessel of the double layered tank.(Assuming the tank operating pressure is atmospheric as u don't mention any).The installation requires a simple finned vaporizer which will vaporize a small amount of liquid nitrogen  (supplied externally) against rising Ar Vapors.Ar vapors will  condense and settle down in the tank,thus minimizing losses.

 

( All modern plants ,imply this technique.Vented pure Ar is either routed to Pure Argon Column or Air compressor suction.Aim is to improve Argon recovery.

 

Bodhisatya