Howdy Everyone
I know a lot of you out there have just put in or are putting in Helium
Recovery systems. We have been using ours for almost a year now. In the
last several years there have been several emails here and I have gotten
personal emails from people too asking questions or wanting advice. I know
there are several locations trying novel things in their installs such as
crimp fitting copper or other materials. Also, sites using different
designs, no back pressure controllers or maybe heat exchangers or not.
So I was hoping that people could share updates on what they have done, or
are planning, and how things are going with either the installs or overall
functionality of their systems. Maybe a short description of how many
systems you have and the layout? Are you using High Pressure Recovery or
Medium? What type of purification system do you have, LN2 or ColdHead? What
materials you used, and how you think things are functioning? What
pros/cons have you found? If you have any info on your purity or efficiency
that would be great too. If you want to share info on the amount of gas
being processed or liquid amounts being made? Do you have information
posted on your website?
Basically anything you would want to share would be nice to hear. I would
be happy to compile the responses and post a summary later.
2 examples of things we have experienced and liked:
1. We went with LN2 purification due to initial costs, water and electrical
needs. But there was not a lot of info out there about how well this
worked. After some initial system issues (leak in compressor) that were
causing us to change the LN2 trap every 48L of liquid made. We are very
happy with the LN2 system and can easily go 2 months without changing the
trap now!
2. This is a nice problem to have, but we did not think we would be having
to take liquid out of the liquifier so we can have room to make more
liquid! It took us a little while to get into a routine that seems to be
working for us. But we do more 20-30L fills more often instead of waiting
and going fills that use 50-60L. Basically we have 1 fill a week happening
now (DNP gets filled every other week) instead of several weeks off and
then doing 2-3 in a single week.
Greg
Gregory P. Wylie, Ph.D
NMR Facility Manager
Texas A&M University
Department of Chemistry
P.O. Box 30012
College Station, TX 77842-3012
gregory.wylie_at_chem.tamu.edu
979.458.0705 (voice)
979.845.4719 (fax)
706.206.0007 (cell)
http://nmr.tamu.edu
Received on Fri Aug 13 2021 - 11:17:27 MST