Passive Extraction using 1.5" recovery line

You call that cold?

Chilling anything larger than a 25lb tank with dry ice is laughable

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The tank thinks so. But really…it’s all in the coil. The coil does enough heavy lifting that the tank thinks it’s being chilled.

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I run the same way. Couldn’t find a cold shot, but the insulation helps a bit.

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I asked the same question as 1/2" was becoming the standard. I guess it’s not worth it unless you’re running
a large extraction unit. The other thing that makes it harder to run is you’re gonna need to be able to keep up with the thermodynamics.

imo: It’s a good idea on paper but it’s more worth it to make a micro ffe for recovery if you’re going the route of triclamp for recovery because at that point you may as well start thinking of utilizing a dephlegmator as your hose …

1.5 Triclamp BHO Recovery?

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you want a bffe butane falling film evaporator

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FFE for hydrocarbon recovery.

How big is your system? How much solvent are you running? What do you have to work with for heating and cooling? Are you limited to dry ice or do you have access to a subzero/near cryo low temp chiller? What is the solvent you are using?

What is your current set-up if you’re not familiar with passive and what are the rates you’re currently experiencing?

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Does this insulation cause static or is it dissipated with a ground?

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No, but it’s always smart to ground your system.

I would get a 50 kw heater and 50 kw chiller or use a shitload of dry ice and coils . Opening up a systems recovery only does so much it helps but it really is all in the amount of heating and cooling power you throw at it . I have seen 1.5" recovery push 20lbs a min recovery with straight n butane with just dry ice and coils . Just requires tons of dry ice and a large heater . There wasn’t even an internal coil on the collection just using the outer jacket and a propane on demand heater with a radiant floor pump cranked all the way up

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Vapor line size is critical in a thin film, not so much in batch pan distillation. You’re on the right path!

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Agreed. You’re condenser type and size along with your chiller capabilities are more important.

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It’s not the size of your line that matters. It’s how much heat you can put into the system on the hot side and how much you can take out on the cold side.

To transfer 10 pounds per minute you need to inject 41,750 watts ( 142367 btu / hr) into the hot side and the remove the same on the cold side.

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I found I can’t keep up on the heat side lately

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What are you using for heat?

Propane hot water heater. I’m thinking I’m losing heat in some places I shouldn’t if things were insulated better.

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How big? Last one I had was 52kw

So 2 flaws I see is that I have it super far away for safety and second it’s been freaking cold outside lately. Those combined with non insulated hose and I’m losing a bit of heat

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What are the specs on your hot water heater? How many BTU / Hour is it?

I believe it is 200k btu

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