I was wondering if anyone could explain to me what I’m doing wrong after I rebuild my crc column I run 30lbs of material through flush with 75lbs propane butane mix 70/30 and never have a decent yield 2-3%. I then run another 30lbs of material followed by a 75lb gas flush same mix and I hit yields of 10-18% I’d appreciate any advice hope all is blessed fam.
Residual oil being trapped in filter media, sounds like you need to lower your media ratios to more run specific ratios. Also, 75 lbs of solvent over 30 lbs of material is only a 2.5:1 ratio of gas to solvent, try running more of a 5:1 ratio - 5/lbs of gas per pound of material. This should dramatically increase yields.
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I run 22lbs over 5 lbs material the 75 lbs is a wash over the crc when all the material has allready gone through I have 6 columns that I put 5lbs of material into I appreciate your advice
Should have also stated I build the crc column to the weights recommended by the company I get my media from
2 to 1 Solvent ratio is far too low.
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CRC media hold up is a real thing, you either need to reduce crc amounts and still flush or if you plan to run the multiple batches through the same media understand the first run will alway yield less and then at the end you should flush some clean solvent through it to pull the rest out.
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Is your CRC heated or cold? How cold do you run your 70/30? There is a trick to running CRC cold and it’s pre wetting your CRC and adding a little pressure to the cake, before you run any material over the CRC. Heated columns work best for chromatography. You have to remember that a CRC column is essentially a reverse phase chroma column. Also you said “CRX”… The media bros powders kinda suck, your better off with lab grade silica and b80 unless you have a really tough remediation. If you are using ultra cold gas I PERSONALLY wouldn’t do less than 8:1 and if I was running my own material I’d probably run cold gas at 10:1
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What is considered ultra cold?
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Anything under -40c for extraction purposes, cryogenic is -150c i believe
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-30 to -40… But as said above you could consider anything ultra cold outside of extraction right up to cryo
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They are always going to recommend using the most media to increase your burn rate to sell you more. I run baked powdered medias, I highly dislike granular medias.
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Hey fam thanks for all the insight! I have two chillers one chills my two jacketed solvent tanks one chills the coil that is hung near the ceiling that is prior to the solvent tanks they are set to -80c but during run time the rise to -40/-30c I was doing 3min soak times but my test scores were coming back with low thc %s so my boss has me doing no soak times I nitro assist 22lbs into the material columns then push it to a heated jacketed collection pot then it gets pushed threw the crc that is on top of a heated jacketed collection pot that I pour from. When I started the old crew was using media bros I have switch to BVVs media and I use the bentonite, silica, and activated aluminum at the suggested 30lb mix
Are you running fresh frozen or cured? @HMP7420
Bolth but the ? I’m trying to figure out deals with dry material. I do three runs through my crc column before I change it out but the mix rate from BVV is for 30lbs and if I was using a fresh one every run my yields would be next to nothing it’s not till I run a second 30lbs that I see a return. I’m just wondering if there’s something I can do the first run to get a decent return
Use less media on the first run…
Build individual CRC’s if you’re running quality material. Multiple runs through the same CRC = crude.
Media bros states that their media works best at temps below -10c due to the porous nature.
I agree that silica and b80 is the way to go for quality material. We run silica and b80 at -40 or colder (no pre wetting) and have no issues.
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Yeah, and they’ve done all kinds of R&D…
Pretty sure you’ve had the following suggested: use less media, use more solvent to wash media, use warmer solvent to wash media, use different media…
I’d suggest going in circles…
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He’s not using enough gas to elute out of the filter column, and cold gas doesn’t help.. a heated CRC’s through put and efficiency are so much better on a jacketed CRC. The dual and triple heated CRC’s are the best , cause you can start running really fancy media setup and refeed etc.
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What cyclopath said. Do some research on chromatography, look into how silica works, and what it’s accompanying powders do. There really is ALOT of science to it. You don’t HAVE TO know all the detail, you can experiment to see what you get… I would suggest starting somewhere around 5:20g that’s 5 grams of silica and 20g of b80 per lb of input. This is a starting range and made for “typical” commercial material, something on the “higher end” of cured flower. Maybe a little high for trim, and even higher for boof. Another tip… Silica and B80 have a symbiotic relationship in the filter column. If you are doing a basic filter, mix your b80 and silica, do not layer.
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Thanks guys I really appreciate it. And my first collection pot that my run goes into after the material is jacketed and heated to 60*F does this warm the gas before I run it through the crc? And I have been doing layers with the media.
1500g activated aluminum per 30 ps of material
6.7 runs per 10kg
3000g b-80g per 30ps of material
3.4 runs per 10kg
1500g silica gel 60g per 30ps of material
6.7 runs per 10kg
This is the recipe I use that BVV suggested for 30lbs material
That’s like 50% media by weight, that is wayyyy too much media
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