Cryo extracted crude is distilling super dark. Residue looks great but it doesn’t stack well in a jar. Any suggestions?
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Would need more info to make a guess at what’s up !
Para meters extraction
Para meters wiper
Pare meters biomass
???
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short answer: distill it again.
correct answer: see Rogue’s reply…
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what do you mean by “residue looks great but doesnt stack well in a jar”?
Answering Rogues reply above will help us all help you.
In the meantime, i will add this:
The color youve got there is extremely dark for disty, not just dark amber in bulk. Confident youre not getting splashing/entrainment of feed droplets from the wiper wall onto your condenser? Are you confident youve decarbed the oil prior to cannabinoid distillation? (if not, this could cause not only poor vac conditions but hella splashing onto the condenser)
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Patiently waiting for @bryce69 to respond, since I have never seen Disti this dark and I am extremely curios at this point.
I do agree with @CollectiveObjective it seems like possibly a step in the process was missed, most likely a proper decarb.
At first I thought this pic was of the Residue, in which case the color is proper.
Your rotor’s RPM is too high and/or your input crude oil rate is too high, and causing crude oil to form microdroplets and these microdroplets are getting into your distillate side because they are floating around along with the vaporized crude oil (which should be yellow/orange). You might also have not done a first pass and heads are getting into your distillate. These machines do not perform well when running them at the speeds the manufacturer advertises and recommends.
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Always good advice. @Roguelab knows
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Parameters from start to finish:
Biomass extracted in a centrifuge at -60F
Agitated for 12 mins
Rinsed for 12 mins
Post extraction it is sent straight through 50 and 1 micron sock filtration.
From there we recover about 80% of our solvent and send to a 100L reactor.
In the 100L reactor we recover the remaining solvent at 92c. After remaining solvent is recovered we bump it up to 136c and agitate for 2-4 hours to “decarb” our material.
Don’t have the exact vacuum range handy, will figure that out tomorrow.
After decarb it goes to a wiped film where we run 3 passes
Terp strip - about 3L hour input feed rate, done between 152-162c (evaporator)
Vac - 1.2 e -01
Wiper - 400
1st pass distillate - about 3L hour input feed rate, done between 202-232c (evaporator)
Vac - 1.2-2.2 e -02
Wiper - 400
2nd pass distillate - about 2L hour input feed rate, done between 172-182c (evaporator)
Vac - 1.2-2.2 e -02
Wiper - 400
@Kingofthekush420 what your thought
? Vac seems a bit high but should work with short residence time
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edited: NVM, not the issue
1.2e^-1 is 90 microns by mu calculations thats really low for a terp strip IMO
At 152c youll be pulling cannabinoids even with thc
Is do like 140 c and 1000-2000 microns
When I do the terp strip im not trying to pull heads im just trying to pull terps and solvent out to get a low enough vacuum to distill on second pass
Hot condenser tech will blow the heavy heads to the cold trap if you run it right
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We’re distilling with a kd6. We’ve managed to get phenomenal distillate with similar parameters.
Since this dark distillate has come about the only major change regarding our whole operation has been our filtration set up(switched to different bags) and our decarb sop. We’re in the process of pinpointing what exactly changed that sent us so far left. I was leaning towards potential oxidation during decarb? But those parameters don’t seem very far off.
It seems clear that you basicly know what you are doing
And that the process is pretty well tuned
So then I would start looking at the biomass
Are you in an area where biomass can be contaminated with fire retardant s?
For one you can take ph of crude prior to distilling
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Have a coa of this dark distillate
Any cbc in there ?
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This is the most recent liter we pulled. Following the same extraction sop.
Different filterers
Different decarb sop. Decarbed at 116c for 30 min under vac only agitating periodically.
Generally the same distillation sop,
Terp strip - 3.33L hour input, 162c (evaporator)
+1.2 vac
93/7 yield
1st pass distillate - 3.33L hour input, 212c (evaporator)
4.2e -02
80/20 yield
2nd pass distillate - 2.8L hour input, 171c (evaporator)
1.1e -02
63.45% overall yield / 85% THC
We’re working on duplicating these results so we can move forward but now the biggest issues are pin pointing the problem and from there figuring out how to remediate the large sum of oil we managed to amass running incorrectly.
We get our biomass tested before extracting, everything comes back clean for the most part.
To my best knowledge I don’t believe we’re in an area where we should have to worry about that type of contamination
No coa on the dark distillate.
This liter was also pulled from the same biomass that was giving us that horrible color
Typically on a terp strip i want to be around 500 microns to 1000 microns. Any lower and you will definitely start codistilling cannabinoids
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Is it mbar or torr he is reading? That may be closer to 120 micron if torr
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