What pressure is the housing rated for?
What are you using for the pump?
Or I’m I a bonehead and that’s listed upthread?!?
Will the pentane / heptane one be an open loop system?
You could make it open loop, but no AHJ in their right mind would allow that to be operated in an open system over the 5gal MAQ’S.
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All of our housings are pressure tested to 1200 psi even though they’re only meant to see 1000 psi max
These membranes will run up to 1000psi also
I’m using 6.6 gpm Cat triplex pump, im going to keep my tank at -20c then use injection coils to drop the temp before it hits the column, I was looking for a low temp gear pump but haven’t been able to find one that’ll go colder then -20c
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Pentane is considered c1d1 based on it flash point and vapor point, heptane you could get away with c1d2 if your jurisdiction allowed (heptane could definitely be an open loop system as long as its inside the c1d2 area)
Hexane is a weird one since its a neurotoxin, it’s c1d2 BUT there’s extra regulation that you don’t have with heptane since hexane is toxic
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…and there are just some things that one ought not push too hard on those “rated limits”.
Is 1kpsi necessary for reasonable permeation/selective-ness with straight n-tane?
I get nervous around 150psi, even on gear that I’ve hydro-tested to 350PSI myself.
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The color remediation membranes run tighter the higher the pressure so you get better color remediation at 1000 psi then you do at 600
Solvent recovery you don’t have to run at 1000 psi you’ll get permeate between 100-200 psi for butane
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For a while now I’ve been working with kca to help me identify some unknown compounds making it passed my color remediation membrane. We are getting closer to identifying the major component of what makes it through and causes us to have to “winterize” even after membrane filtration. This is the second test we’ve ran with them to try and identify these compounds, the first one involved running a fats standard on MS against my crude and showed the standard plant fats and lipids are rejected by my membranes. No other skid supplier is doing the kind of r and d we do.
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This week I will also be running our test skid at a client’s facility on there cold ethanol extract for proof of concept
They want to boost the potency on there starting crude to try and crash cbd a out in heptane, we think this will be easy to achieve with fresh material and proper extraction
I’ll be posting all the results here
We now offer live demos at your lab also
Pay for the shipping on our test skid, the membranes you want to run and for a day of consulting and we will come to your facility and run our skid and membrane on your crude
If you end up purchasing a skid we will credit what you paid on the test skid towards it
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Damn that butane one is gonna be sick 
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As soon as I’m back from Alabama I’m going to start testing on it
I think you guys have waited long enough 
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Cool cool looking forward to see how things turn out. Can you flow any temperature butane through it or does it have to be warm?
It needs to be between 0 and 30c
The system I’m designing will use the hot recovered vapor to pre heat the crude to the desired temperature for the color remediation membranes so no energy is lost
Its taken me a long time to design this system because there’s so many different parts
Itll use butane membranes to recover as much solvent as possible before going through the butane falling film for recovery
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How much solvent is left in the crude when it exists your last filter?
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What membranes are you selling for heptane these days? Most of the ones I’ve played with are pretty unacceptable due to some combination of cost/throughput/cannabinoid rejection.
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I’m interested but have a few questions would you mind contacting me via inbox?
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Did you ask to look at sterols? Technically Diels’ hydrocarbon is a terpene product and would be a scaffold for sterols. It’s a 4 ring small molecule that when functionalized becomes human and plant hormones. All of those look to be fatty acids.
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4:1 with ethanol generally
I start at around 40:1
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