poor man ethanol extraction / ethanol recovery ? Modified bho cls ? ( minus the bho ). Any one done this or have thoughts? …
Yeah just use the butane
This has been done by several members
What he said.
There’s a thread here somewhere talking about it. I think best use for a cls involving etoh would be modifying it to use for pressure filtration, and just extract in a bucket tek fashion.
If you can use clean butane in a cls, why would you want to mess around with ethanol? If you can’t, or don’t want to use butane, and already have a cls, then by all means, tinker around.
I currently run butane in a cls , was just trying to get experiment with some different solvents . Thanks for the tip !
Here’s a link to a similar thread. Oldie but a goodie:
You can use nitrogen to push freezing ethanol into a cls.
I never bottom fill but!! If you’re gonna try using ethanol in a cls to extract you should bottom fill and transfer what you made into a dewaxing column to a filter stack down to 1um or just to a filter stack like crc but for etoh.
Then you’re gonna have to modify your recovery port to have a 1.5" tc opening so you can add a shotgun condenser or dephlemator.
You could also extract in a dewaxing chamber.
I asked one time if you can use a diaphragm pump to push the ethanol from a tank and the answer is no and to use nitrogen but interestingly enough you can use a diaphragm pumps postive pressure side for pressure filtering.
There’s also this to get 75% of the etoh out of the biomass in a column.
Honestly up to you but you’re much better off just using a cls as a pressure filter or for butane extraction.
yep. trivial. documented. and now sold by Precision.
but you know that already.
then you were given the incorrect answer. I’ve used the outlet from a welch diaphragm (vacuum!) pump to push ethanol out of kegs.
looking @GreenMachine_Consult’s response
I would simply add that the temperature matters here (the pressure does too, but you’d be hard pressed to achieve pressure based ignition with ethanol using available tooling). at -40C you’re golden. at -20C you’re fine. at 0C you shouldn’t have any issues…but as you approach the 16C flash point of ethanol, you should definitely understand you’re making a fuel air mixture.
if we’re talking LEL here, raising the pressure with AIR actually raises the temp at which you hit the LEL. Not gonna do the math for ya.
Bizzybee used his original hydrocarbon machines for cold etho, as well. Just have to spin the material as it comes out, which obviously wasn’t a long lasting method
agreed. it is absolutely do-able. just not as efficient as extracting in a centrifuge, because you leave a lot of solvent behind.
Yep. Wasn’t that atmos thing, or whatever the name was I can’t remember, that was a cup extractor, but the dumb ass thing didn’t have a spin cycle and they “noped” themselves out of the picture really quick
I KNEW I SHOULD’VE BUMPED FOR MORE Info on that thread. It was a curious thing that after I made that I saw threads bout cartridge filters for etoh that used pressure and vacuum and at the time I was like must be nitrogen powered and then I saw elaborate vacuums and compressors or dual diaphragm pumps being used…
Thank you, now I’m gonna design an etoh system at some point
What if you use nitrogen on a bi-di set up? Try to flush out the solvent both from the top and the bottom.
I think I get what ur saying ? I was thinking I was gonna keep pulling a vac on my collection tank because there’s no gas but could flammable fumes cause a explosion like this ? I can attach a tank to my collection tank as well , pull vac on this tank open ports to let one tank pull the other . Then vent off fumes from my second tank and repeat the process ? … lastly I was thinking maybe I can push the ethanol with butane fumes the way some people push there butane ?
I like the nitrogen idea but I don’t have nitrogen tanks
Don’t do this. It’s not safe.
Not sure how low I’d have to set the valve for this ? I Think I’m gonna try the double tank method just so I know I’m not sucking up any alcohol fumes in my vac pump
Thanks ! I thought it sounds like there may be hazards involved I was unaware of
Cold trap! Use a cold trap or a resin trap.