I’ve been lurking here for about 2 months studying up and reading all the threads I can, but specifically regarding etoh extraction and SPD. I’ve found it to be both enlightening and entertaining to follow along while the community helps out those with less experience. It’s actually quite refreshing to witness in a time where there is so much discord on the interwebs. My hat’s off to you all.
This journey for me all started out with my girlfriend wanting to grow hemp this past spring as she’s into plants and tinctures. She grew a couple hundred plants of some great quality flower and has supplied a few dispensaries around our area as well as a few out of state. It’s by no means a big business, or even profitable at this point. We both still have dayjobs. Really, it’s just funding our hobbies. I come from a field engineer background so I’ve been tasked with both the R&D as well as building whatever we need on a fairly tight budget. All in all it’s been pretty fun, albeit challenging at times, and as a bonus we’ve gotten the added benefit of supplying organic, well tended to, clean medicine to friends and family. The goal here is to take what we’ve already done a few steps further.
So, in the recent past we’ve done rosin, winterization, basic cold etoh extraction, etoh distillation and filtering. My current plan is to go through with the whole process beginning with something resembling bucket tek with -60c ethonol cooled via dry ice and ending with distillation.
For gear I currently have:
A full set of 14/20 fractional distillation glass.
Full set of 24/40 SPD glass, 500ml BF
500ml digital mantle
A small 3CFM pump
HFS 12CFM vacuum pump (supposedly hits 15 microns)
A vac gauge that only hits -30hg
500ml Buchner funnel
A finger style cold trap (will be cooling in a dry ice jacket)
Digital temp gauge
Things I plan on getting:
Better vac gauge
A different/another cold trap
Full bore vac lines and an Alcatel 2021i pump
T-5 and AC
I have about $150 to spend on this project for the next two weeks unless we sell some flower in the meantime.
I actually totally spaced on a 10/18 thermometer adapter. Could I use a rubber stopper or is that not recommend? They don’t have them on Amazon prime and it would take at least a week to get here. Any fixes?
Now for the questions. First, temps. What is the condenser temp supposed to be? I was under the impression that it was supposed to be cold, but I’m seeing some information that conflicts with that. Is around 80 c the target temp for the condenser? My understanding of the idea is that the BF is meant to vaporize the target compound, the head temp is meant to further that vaporization a bit under the BP of the target compound until the bend of the head where it is then cooled by the condenser. Is that all correct? Is the 80c condenser temp meant to keep the compound in liquid form until it reaches the recieving flasks? Further, would a super chilled condenser work if one was distilling off terps or etoh off a crude+etoh solution? Being that I don’t currently have a rotovap or a countertop distiller I’m planning on distilling my etoh via SPD with the 24/40 glass and the small vac pump.
Do you guys think I should give it a go? Or, what is the most important thing I can purchase under $150 that will aid in my success?
I can post pics of my setup and runs later.
I’d appreciate any tips, pointers or criticisms!