[Gray Wolf]

A couple of previews of things to come when we open our new The Alchemist Resource blog site 11-1-2017.

Here is one system which uses a mag drive pump to circulate -50C ethanol through a column of material and a second that uses either air or nitrogen pressure to transfer the chilled ethanol back and forth.

The ethanol is chilled using dry ice.

[Boyd Crowder]

grabbing the first seat on this one as well
i love that your not laying down after your recent troubles, but ,
continuieng to innovate, mr wolf

[Gray Wolf]

Originally Posted by Boyd Crowder

grabbing the first seat on this one as well
i love that your not laying down after your recent troubles, but ,
continuieng to innovate, mr wolf

Hee, hee, hee, innovation is the fun part and my mechanical and abstract reasoning didn't die with getting out flanked and locked out of SPR, they just sought release elsewhere!!

A kita is a good thing when it drives process evolution to the next level.

It was actually supporting WolfWurx and then Pharmgold that took my attention away from keeping SPR more current and creating new processes and equipment just for fun.

Now that my hut (office) has burned, I (am retired again and) have a better view of the rising moon.

Ya'll will note a number of new designs and improvements when we launch TAR, as well as all new current articles. It will lack some history details, but at this point, those are still available at SPR.

The biggest handicap was having my personal equipment confiscated, thwarting my experimentation, but we've yet to hear from the fat lady on the lawsuit I've filed against James Davies for its return.

[~star~crash~]

wow... people suck ... thank you >>> Gray Wolf, for all you've done & all you continue to do ...peace

[gaiusmarius]

sorry to hear about your difficulties, haven't been following things too closely recently.
all the best for your new ventures.

[HG23]

I have been working with a Pinnacle Stainless 100L reactor system that is configured just like your second image. It works great and there is no winterization necessary if done cold enough.

The slowest part of the process for me right now is having to remove each bag of material post-extraction and put it in a perforated-basket style centrifuge (Hobart salad spinner) to recover the last bit of ethanol.

You might need some vent ports on your vessels to allow the atmosphere to escape when transferring ethanol around. There is also a small amount to ethanol vapor that escapes from the vent ports during transfer. I currently vent it outside, but it could also be routed to a condenser for collection.

Let me know what you think.

[Boyd Crowder]

why cryoethanol?
does it leave the chlorophyll in the material?

[HashoftheTitans]

Me likey. I've been designing a similar system for winterizing bulk crude. It will utilize a continuous feed centrifuge for filtration and two jacketed fermenters each being chilled by a -120C 30L chiller. I was looking into doing cold ethanol extractions and found that ethanol recovery will be our bottleneck so we try to reduce the amount we need to recover daily by extracting crude with hydrocarbons.

[Gray Wolf]

Originally Posted by HG23

I have been working with a Pinnacle Stainless 100L reactor system that is configured just like your second image. It works great and there is no winterization necessary if done cold enough.

The slowest part of the process for me right now is having to remove each bag of material post-extraction and put it in a perforated-basket style centrifuge (Hobart salad spinner) to recover the last bit of ethanol.

You might need some vent ports on your vessels to allow the atmosphere to escape when transferring ethanol around. There is also a small amount to ethanol vapor that escapes from the vent ports during transfer. I currently vent it outside, but it could also be routed to a condenser for collection.

Let me know what you think.

Thanks for the heads up, I'll check out the Pinnacle!

The tanks vent through the three way valves. They would have to be vented to the ventillation system, or outside.

[Old Gold]

We have had no problem pumping as cold as -60C denatured alcohol through our centrifugal magnetic drive pump. It cost roughly $350 from Grainger, and it handles many solvents well (polypropylene). I wanted to test one to see if it would even pump ethanol that is reasonably saturated with cannabinoids and plant extract. I think it will handle pretty well actually...

We also have a jacketed ractor that is over 150 liters. It might help to note that there should be pressure relief valves on there or it must stay vented the whole time (which may be what you said, I wasn't sure). If not, what pressure are you seeing when chilling directly with dry ice?

There is a magnetic stirrer mounted at the bottom, and a 2" drain port. We are going to weld in a filter plate holder to set a bag of material on, as it will sit above the stirrer, and the plate can be removed if needed. Otherwise, we would just stir the plant material directly, which just makes cleanup a lot more time/labor intensive.

We have not run ours yet, but I lean towards a heat exchanger and the mag drive pump instead of direct cooling of solvent like that. Ethanol will likely be stored in a -86C freezer if we run it once a day. Otherwise the heat exchanger is crucial.