Usually do a carbon and a bleaching earth in the same step.
I think I’m picking up what you’re putting down here. I’m currently using Summit’s PIG filter, you’re recommending a second one set up parallel and a three way valve to switch when it fouls?
Yup, use differential pressure as your control factor for fouling. At some point before you fully plug your dewaxing efficiency will drop below a desirable level because the available surface area for plating will reduce. Once you dial in an optimal d/p you’ll be able to hot swap to the other filter and clean/change the first.
That’s a good idea man, thanks for sharing! Now I just gotta talk my boss into getting a second one. We winterize 15kg of resin at a time so that would make a huge difference.
Centrifuge with a 1 micron screen is gonna beat anything IMO. Loads of surface area. Relatively easy to clean. Super fast.
You gotta link for material?
…and currently stuck at border crossing… 
The centrifuge or the screen? Reason I’m curious Bc they maybe looking for a CRN on each part of the equipment.
Fuge. They were looking for $$. It should be heading my way soon.
@cyclopath that makes sense. When i was up there a few weeks ago i heard through the grapevine they had some major L taken while i was there. They were using similar equipment.
So funny Canadian “fact” they have a dog that can smell only $10,000 and more cash lmao
I’ve bout settled on this as a final design. I love my bag filters and I want the added benefit of media-embedded filtration to get rid of some color.
Thinking about adding a heat exchanger between the last two valves between lenticular filter and the second bag filter to improve adsorption in the lenticular.
Anyone got some thoughts?
Starting straight from the centrifuge ?
The best color remediation on etho crude is achieved with bentonite t5 and AC
Wonder where t5 could be implemented
@Shadownaught had been discussing in the fall they might be producing lenticular filters impregnated with bentonite soon. Maybe they’ve gotten closer?
I definitely like the idea of a heat exchanger to take advantage of the increased efficiency of adsorbents at higher temperatures.
I should have included the tank.
The centrifuge and this filter cascade are connected to a jacketed tank. So feed from centrifuge to tank, rechill and send through filter.
Rechill for the reason of winterizing I asume
If so adding bentonite to the tank will be a great option for long residence time
Floculation with the fats
Taken out with the first. Bag filter
Only draw back is your pump needs to be capable to pump slurry
Heavy agitation on the tank to keep the bentonite suspended can help
I guess
All good ideas, I have to be certain that all bentonite is retained because I feed the crude to a wiped-film.
You can see a pic the setup I was running in this post:
After this post, I switched it to 25um bag → 1um bag → 1um cartridge. I wasn’t using an AC cartridge, the last stage was just for clarification since the bag is only somewhere between 65-80% efficient. What I can tell you from that though is that you’re likely to exhaust the the absorption capacity of the AC before you see a significant pressure drop across the last stage. The 30" pleated cartridge in my setup would easily last for at least 1200+ gallons. I wish I had run an AC cartridge and could give you an idea of it’s lifespan. If running cost is a major issue, it would be worth at least trying to find out the approximate lifespan and $/gal cost of a 30" cartridge filter vs. a lenticular cartridge, as lenticular cartridges can be as much as 10x as expensive as a 30". My guesstimation is that lenticular would be the way to go.
Hey, I liked your post. I’d like to put in my 2 cents.
For winterization a recessed plate, center feed press is the best! This is different from a PIG/Maple press. The solution feeds from the center of the plates and floods all plates simultaneously. (No paper, No leaks) There is no plate #1 clogging before plate #20. They all filter and fill at the same rate. We precoat the filter plates with DE or Perlite and this creates a 3D surface (Depth Filtration) to prevent filter cloth from fouling prematurely. The DE/Perlite also makes a nice filter cake that is not messy to clean.
Anyways, by using a filter press you can filter whatever gallons of crude you like (thousands even) easily. It is the lowest cost, fastest way to filter high fats crude. This is what I am referring to.
The drawback to a press is that they need to be cleaned out manually. Automatic plate cleaning is extremely expensive, though available. Automated candle filters operate similarly to a filter press yet precoat, filter, clean, flush, etc… automatically. Similar tech but different animals. This is a candle filter.
Love your post BTW.
Anyone experienced with rotary vacuum drum filtration?