Permeable Thin Material

[Zibraz]

I suspect there will be no other solution to my problem, but I thought I would ask. I have a new project to find a better method to create a sorbent tube assembly. The basic construction is as follows.

800mm length of Ø0.063"ID x Ø0.083"OD tube.
This tube is filled with a sorbent (By diluting it into acetone then feeding it in.

To stop the sorbent from exiting the other end, a small "Stopper" is placed inside. This stopper is the issue. Currently it is a very thin tube (Ø0.008"ID x Ø0.016"OD) with a thin wire (Ø0.005") inserted into the stopper to act as friction so it stays in place.

This stopper is really awkward to size correctly and make. I was thinking of finding some sort of permiable mateiral that can be usd as a stopper instead of this thin tube. Is there a permeable/semi permeable material that can be drawn/made into something that can fit inside a Ø0.063" bore?

As I said, I think the solution in place is the only possibility, but thought I would ask.

 

[TugboatEng]

You want the acetone to exit and not the sorbent or do you want air to exit and not the sorbent acetone mixture?

 

[Zibraz]

You want the acetone to exit and not the sorbent or do you want air to exit and not the sorbent acetone mixture?

The only thing the acetone does is to mix into the sorbent so it more easily flows into the 800mm length of tubing. The smaller stopper (made from the 0.016" tube and the 0.005" wire) is there so when the acetone & sorbent mixture it's it, the acetone is flushed off (using a pump) and the sorbent remains.

I something to push inside the 0.0625OD /0.02"ID tube that will act as a physical barrier to catch the sorbent but allow fluids to escape.

 

[TugboatEng]

You have described a filter. Your challenge is that with the very small surface area the sorbent will clog the filter before much acetone passes through it.