There’s a guy that has gotten it to work, where it put CRX on the bottom of his column, then packed flower on top, and then ran it like that. I can’t tell you ratios or anything else cause I only saw the end product.
You can only use CRX or CRY once. It’s a pump and dumper operation - speed and ease of use is our game.
Ive heard ppl using both methods. I believe @J12 loads it at the bottom of the material column and freezes the whole thing. I load it in a crc. Throttling definitely plays a role as well. Ive noticed some bands of color wont really move through unless you put enough psi behind it when using powders. Running at lower psi definitely helps the color wether using powder or granular adsorbents. Powders have more of a chromatography effect while granular has more of an adsorbent effect due to greater surface area which is why it needs to be throttled for it to do its thing. Im sure thats why i get better color remediation when i blend granular and powder form adsorbents and throttle it as well in a crc.
I’ve surprisingly have had zero flow issues with the tampons. I only need 30psi to go through my 1.5 crc stack and I have to close my valves some or I get almost no residence time
For both b80 and w1.
I’m even running a .5 sintered disc under everything too.
I’m a filthy whore though. I rock the same rag for about 30 lbs and then change it out. I run a full 3x12 of powder loaded under vacuum, and assumed that was my flow problem.
It could be the nitro is passing by faster than the liquid solution causing positive pressure build up on the recovery side which could slow the flow down
I soak in my material column 2-3 minutes before moving onto the crc. I move into the crc slowly with the bottom closed off to the collection vessel. Once solvent stops moving into the crc on the scale I then open the bottom of the crc and move onto collection.