Hee, hee, hee…………………………
With the discovery of a Mystery Oil in canned butane, comes yet another good reason to build a Terpenator, as they easily fractionally distill the butane and propane from the heavier Mystery Oil elements, leaving the mixture of oil and waxes the lower collection tank, where they are easily removed using an alcohol wash.
See https://skunkpharmresearch.com/bho-mystery-oil/ for more information about the Mystery Oil itself.
Of course you can also simply use a cold trap, instead of a Terpenator, but after purchasing all the same ancillaries, the incremental cost is small and if you are already a proud owner, you are in tall cotton.
Soooo, as most Terpenators are Mk III’s, how do we go about fractional distillation using that unit?
Start by heating the hot water pot to 85F and setting the cleaned and empty Mk IIIA in it.
Pull a hard vacuum on it using the vacuum pump and then close vacuum pump valve 1, before turning off the vacuum pump.
If the recovery tank is empty, pull a vacuum on it as well, before closing the valves to hold the vacuum in place.
Assemble the Mk IIIA system, as if you were preparing to do an extraction.
Open the blue valve on the 50# refrigerant recovery tank, but leave red valve closed. Open the #3 dump valve and #5 recovery pump valves, closing column vent valve #2 on the Mk IIIA.
Disconnect the red hose from the recovery tank and attach to the can tapper.
Start recovery pump and tap can, using can tapper, open butane supply valve #4 to allow the recovery pump to pull the butane from the can.
When the pressure gauge reads zero pressure, close the #4 valve and tap a new can, before opening it again to allow the butane to load.
Continue that cycle until you have loaded about 10# total or about two cases of 300 ml cans into an empty 50# tank.
When the last can is loaded, and the pressure again reaches zero pressure, close all Terpenator valves and turn off the recovery pump.
Bleed air into the system by removing the pressure gauge hose, and open it up for inspection.
The Mystery Oil will be coating the walls and bottom of the Mk IIIA recovery tank, where it is easily removed by alcohol wash.
The next simple Alkane after Butane, is Pentane, which boils at 36.1C/96.98F, so it is important to not raise the hot pot temperature above 85F and to not pull a vacuum below 0″Hg, so that it is cold boiled away.