Sweetleaf V2 closed loop system

[HighStateToke]

Recently came across this new closed loop system in the past days, allows you to preform inline dewaxing. It is a passive system. What do ya think IC?

Bret doesn't do the best job of explaining it, but it is s decent intro.
http://www.youtube.com/watch?v=BWFyp-gbOPA&list=UUOVuN6EssIqLP1kS98IXRYg

http://www.oninstagram.com/sweetleafextractors

Free advertising here..but a new breed is coming..

Breaking apart this system will only lead to better, more efficient machines. I have no doubt this will be the case, especially considering the bright minds which frequent the ICMAG forums.

 

[Telescopic]

I hate shameless plugs but I happen to be a rep for Sweet Leaf if anyone has any further questions.

 

[Gray Wolf]

Hee, hee, hee, snicker, snark, snort, that is exactly what I love about tossing new ideas out to brothers and sisters and watching what happens!

We looked at double tank extraction, with filtration in between, and still have an open project with a cryogenic equipment company to research the most effective heat exchanger arrangement, but have mostly experimented with not extracting the waxes in the first place.

At around the same temperature that waxes drop out of solution in butane, butane stops extracting it, so as to not require subsequent removal. Our primary attack to this point, has been to use denatured alcohol and dry ice to drop the temperature of the butane storage tank to around -50C.

To do so required replacing the hoses with stainless overbraided PTFE hoses, using copper crushers for seals, vis a vis polymer orings.

When recovering expensive exotic air gases, one technique is to use cheaper liquid nitrogen on one side of the heat exchanger, and the stream to be processed on the other. Our atmosphere is about ~78% Nitrogen, so it is the cheapest air gas to refine by simple air reduction, using refrigeration.

Another way to suddenly cool a mixture, is compressing air, cooling it to room temperature, and suddenly releasing. Relatively cheap Ammonia refrigeration is yet another, and the beat goes on.

Watching to see where this rabbit hole leads, has my rapt attention................

 

[HUGE]

Nice

 

[cyphaman]

Sweetleaf V2, They finally have everyone that was Open Blasting going to closed loops. Game Changer, they have it nailed too.

 

[RegisPhilburn1]

the idea seems sound, and it would be nice to stop worrying about recovery pumps. Also is nice that there is only 6 cans in the system, and dewaxing in the loop is nice.

Id like to hear more data about use, like general yield %'s, time from start to finish, pressures at different points in the extraction, recovery %'s etc. ALso how much can be processed in a reasonable workday?

I really do wonder about blasting a 3" column from the top, and the efficiancy of the coverage/wetting.


What worries me is that the gaskets (buna-n, rated to -40f) in the system are not rated for dry ice temp (-78F). Also putting a borosilicate sightglass right at the point of the greatest/fastest temperature change is asking for trouble. I woud also like to see some High pressure clamps utilized, especially on their recovery tank, and anything over 2"TC, mostly because of hinge points rather than high pressure.

And to the price: 7500 for the small one, and 13000 for the 5#er
ya fuckin right, i could piece the big one together for less than 3. Their prices are exorbitant, and its not an approved/etl listed system, so they definitely dont deserve that markup, like ets or Emotek.

 

[rb extractors]

I laugh when people say something is a game changer... since I heard this recently regarding this system, it tells me that person might have a connection to sweet leaf.

Inline dewaxing is nothing new and can be accomplished many different ways with varying levels of success. Emotek has been doing a version of this already along with some of us.

You can dewax in any closed loop to a certain degree just by freezing your tubes and butane. Throw in some filter paper over a screened gasket or one that uses a perforated metal disc, follow the principles of a bunchner, and you can accomplish the same thing much cheaper. Even better, using increasingly finer screens so that you don't have just one big clog point.

From all the pics and vids I've seen of their new system, I have yet to see them using frozen butane or freezing their column. So what happens is you pull way more waxes out of the extraction and this is evident when they show pics of their filters packed up. Run cold throughout the process and you pick less of these up. Plus you have the inefficiencies of a top down blast along with the filter getting clogged up by waxes which may reduce yields further.

The biggest issues currently are covered by Regis, and to date, nobody associated with sweet leaf will address them. To me, these are serious issues as the chances of blowing out a sight glass are very real with a dramatic temperature change.

Given the crazy high price, no certification in its current form, potentially huge safety issues, your money is better spent elsewhere.

 

[SeedsToRiches]

The crazy part to me is that the smaller unit is using a 4" column on top of a no more than 8" diameter collection pot. The 5# unit is running a 6" column that reduces to 4". That's some crazy coverage, especially given the size of the collection pots and dewaxing chambers..

 

[rb extractors]

it could be a game changer for inefficiency?

what is funny is that you can buy our 5lb unit for 3500, partially dewax running it cold, buy an edwards e2m30, get all the extra stuff to run the system, an AI oven on discount, and still save yourself 5k.

 

[cyphaman]

Great points ^^

 

[cyphaman]

Great points ^^

I meant to quote RegisPhillbrn original quote not the crap Redbeard is saying about me being related to Sweet Leaf lol.. Hilarious cuz Ive seen you beefing with BretMaverick all over IG about this, and all hes doing is helping ppl who dont understand how CL systems work, get a glimpse into the workings of a dope ass, cutting edge unit. Stop hating, and start upgrading... Your claims about partially dewaxing and running a huge CFM pump are funny...

 

[rb extractors]

you mean Bret Maverick, the guy who has probably killed a few people suggesting how to do things when he didn't know what he was doing?

ah, cyphaman is a shill for sweet leaf. Unfortunately there is nothing cutting edge about the system and curious how nobody associated with them will address the glaring safety concerns with the v2 design.

How is asking for clarification on safety issues hating?

Huge cfm pump? I have no idea what you are talking about.

It seems all you bring is criticism without clarification. Usually it is a sign of you not being able to refute the claims made so you ignore and talk about how great it is and ignorant I am. Maybe post 11 by you will bring something of use to us?

 

[rb extractors]

oh, I see what cyphaman is saying about the huge cfm pump. I recommend the edwards. I find this humorous because sweet leaf offers the same pump in their package deal. Do some research before shooting your mouth off

 

[JColtrane]

on point as usual Regis

 

[mendo420]

That video Fn SUCKS.

 

[JColtrane]

I agree mendo ... just took a look at it, and think I lost a few brain cells. Think Bret's somked a little too much tane

 

[Gray Wolf]

Hee, hee, hee......... If us'n manchilds all had the same tastes and motivations, we would have killed each other over the same woman years ago.

Believing is also seeing. Once we become convinced, most of what we see supports our theories, even when our detractors see it as the polar opposite.

Soooooooooo, take this with a grain of salt.

The reason you have yet to see a sight glass at the head or foot of a column on one of my designs, is that glass doesn't tolerate thermal gradients gracefully and sucks in tension.

The thermal gradient is high during extraction, and I am aware of two sight glasses that exceeded ultimate tensile by exploding, after being confined between two closed valves while the butane warmed up.

We are investigating other available sight glasses, as well as making our own from Borosilicate, because it is a good idea, just not sound from a design standpoint, using available sight glasses.

Unlike home use, commercial designs are required to meet ASME standards, so it is clear that many of the designs available on the market today won't pass and survive regulations, even if they are capable of extracting a reasonable product.

 

[rb extractors]

I do think it is cool that Bret takes the time to try and show people stuff as a video is much more insightful than verbiage. That being said, he has often provided misinformation... especially in the early days of single solvent dewaxing. And yes, his drug use has certainly taken a toll unfortunately.

 

[A6 Grower]

Ya i would suggest subzeros Closed loops over this one. his are built great and are a great price. I love my MKIII, and to this date haven't seen a better design( obviously im including the pother MK's that are basically the same design just different sizes). The sweet leaf is like a tamisium with a sight glass in a stupid spot, the price is about the same too but i think tammys come with heat wraps at that price.

 

[rb extractors]

I'm not sure I'd suggest subzero's anymore. They kinda use dated technology and are crazy expensive.