Extraction

Rcar2

Member
Here’s what we have in so far -

I def need to order some fresh seals, screens and a couple pressure clamps

first I’ll show ya the bottom catch with bottom of lid01CAF68E-7E05-44BA-9CBD-1EDF43C00969.jpeg8DAB4796-DE04-40CC-863A-9C22B2967E17.jpeg
 

Rcar2

Member
Here is what I have for screens ( I realize I should replace just in case)

also attached pic of pressure clamp I need -

is it an 1 1/2” or 2” E8571BDE-08D7-495C-AD86-3176F7DEB766.jpegE8571BDE-08D7-495C-AD86-3176F7DEB766.jpegCA4EC7EB-FED2-4F25-A43E-0DA0770AE68A.jpegF81E33E3-78FE-4015-AC0F-79A280449528.jpeg808829A9-AB52-4156-858B-C988248023F4.jpegDE811DEC-42FA-4252-A5BE-A62B0EAE9153.jpeg2D3960A8-E3C4-45E7-BED8-34C170DC2986.jpeg
 

Fadedawg

Well-Known Member
That's what I use.

The only time I've attempted a non-open blast was by sealing the material column to let it soak, but it ended up clogging. When you use a slurry of dry ice and alcohol, and run butane / propane, does it avoid pulling the lipids to begin with to help avoid clogging up the filters?
Yes.
 

Fadedawg

Well-Known Member
Your screens appear to be about 150 mesh.

What is the OD and length of your column (3" X 24")?.

What is the ID and depth of your bottom recovery pot?
 

Rcar2

Member
Oh I forgot to mention I spoke with the guy who bought this extractor like 10-12years ago he told me that at that time this setup with the oven coat him like 24k he said the oven was like 4k and the brushless pump was a shit ton too can’t remember exact number on that.

Does that seem reasonable?

he also told me that at the end they were running a production routine of just gravity flow with no recoup of butane he would just put the pour in a Pyrex dish on a hot plate for like 10days til evaporated then to the oven - thoughts please.

As always many thanks
 

Fadedawg

Well-Known Member
Precision has always been proud of their units, so it would not surprise me that they sold it for $20K. Rule of thumb is to double manufacturing costs to cover expenses and margin, so with a sell of $20K, we ASSume the build cost would be around $10K. For a US built unit, that is probably in the ball park.

You have a 4" X 18" column, with a capacity of about 226 in3 and your pot is an 8" X12", or about 603 in3, or about 502 in3 with a couple of inches of clearance for boiling. That means you have room for about two column volumes per run.

Two volumes is not the end of the world, as the first two do most of the work, but the large fat column is also less efficient than a skinnier one, so I would consider replacing the column with a longer one of smaller diameter.

If you look at the column top cap design, the material at the outside edges of the top of the 4" column isn't directly impinged on by the LPG. For instance, a 2" X 48" or a 3" X 24" for a three-volume flood. The 2" would hold about 1.3 lbs, and the 3" about 1.4 lbs. Your current 4" column will hold about 1.9 lbs, depending on moisture content and preparation.

My thoughts are that it would be a shame to use your Precision unit to open blast. From a safety, cost, and environmental standpoint, there is little comparison.

When I got into cannabis extraction about 2007, folks were open blasting using PVC pipe and there were regular home, motel, and vehicle explosions. We were also using lighter butane because the gas companies wouldn't sell to the newly legal medical cannabis industry, as it was federally verboten.

We discovered high concentrations of "Mystery Oil" in lighter butane and needed a way to remove it before using the butane for extraction. Today using reagent grades of LPG, we still encounter this issue, though at greatly reduced levels.

Besides total cost and Mystery Oil, consider all the impact on Mother Earth by the exploration, extraction, and processing the LPG before we use it our process, so just using it one time and venting it to atmosphere as smog seems like a cop out.

As far as subsequent processing, it depends on what you want to end up with, but 10 days on a hot plate before vacuum oven processing, will most likely produce a decarboxylated high CBN product. What were you hoping to end up with?
 
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