Great info Jesse!! Went back to check who posted about the burlap, Dustin Moore has been using it for over a year!!
Seems to me it would work really good and maybe be able to cut down size of filtering canister!!
Dustin could you give us an update on your burlap filtering system??
2 Likes
Hello Herb
Please don’t take this as gospel.
This spring I took my intake off with throttle body and cleaned thoroughly. I had quite a bit of carbon stuck to the underside of the throttle body and intake. I also had been running without any filter for the winter as I was having issues with the filter material freezing. I was using a standard barrel with burlap in place for the summer/spring before that.
After cleaning the intake/throttle body I also remodeled my filter. I made two concentric circles that I then wrapped with material. I wrapped both circles with burlap in multiple layers. I was planning to wrap the inner layer with a dense foam but did not have it available at the time.
I have drove roughly 400kms since the change and have noticed that I was getting quite a bit of carbon at the throttle bodies again. In my current configuration I don’t think the burlap alone is a sufficient filter so I will go ahead and try the high density foam around the inner circle.
3 Likes
Hi Dustin,
Do you know of anyone running the gas through water then a dry filter? I thought I had read or seen a vid of a tractor that had a thirty gal barrel with a little water in the bottom then straw or hay above that. No wxperince here, my filtration exp. is with premanufactured
filters. So I was thinking: wouldn’t the water collect the carbon that is entrained in the gas - passes through the burlap, and gets stuck to the throttle body and intake manafd? The reason I’m asking is because I want to try this but don’t think my 130 cfm blower will pull
hard enough to over come the water barrier. Yesterday I set up my little filter with about 10 - 12" of charcoal and then
an old bath towel folded if half with some weights around the edges to hold the towel in place. My little gasifier is stationary. I had the big blower hooked up to it and the coal inside was being tossed around alot. The whole can viborated. I did not get a chance to run some air through it. With the little blower. Hands got cold. Had to call it quits for the nite.
Jesse
2 Likes
I thought I saw that water thing also. However, after building a monorator hopper that wrings the moisture out of my gas and the cooler gets what little is left, I certainly wouldn’t then add moisture farther down the gas stream. I feel that would degrade the quality of the gas by humidifying it. I would however, try open cell foam barely moist with light weight oil in the final filter.
Just my two cents.
In case you haven’t seen my condensate removal, see a few clips here:
@1:21 monorator hopper drain 1
@ 6:27 monorator hopper drain 2
@ 7:13 thru 7:15 shows the cooler codensate collecting what’s left after the monorator.
On my next run there was NO water in the cooler condensate reservoir.
1 Like
Thanks Dustin, hadn’t thought bout wrapping the burlap around therefore forcing gas to go though it, good idea!! Otherwise no matter how you laid it in filter container it would always have the tendancy to sneak around the outside wall, very good!
I like it when people ask " what do you use for filter" it’s almost fun to reply “hay” It is hard to beat!!
Didn’t know what burlap was made of so I looked it up, answer, jute or hemp which is the same as marijuana isn’t it??
Anyway it’s a plant, not unlike hay and then weaved into sheet stock!! Seems to me tailor-made for filtering woogas!! And talk about Breathablity!
Tell me Dustin, how did you know it was iced up, wouldn’t hot gas go up though it at all??
1 Like
It was just a question, you don’ need to beat me up over it
No one likes to be treated with Arrogance
Yes your machine is cool. I read about your build all the way through
Looked at and watched your pics. And vids
Very nice work
A little humility goes a long ways
Jesse
I haven’t watched the videos but from the posts I’m reading no signs of arrogance. To me it reads just as “I tried that and here are my findings”.
3 Likes
Hi Jesse,
Sorry, if you felt picked on, that was not my intention at all. I was trying to be helpful and it was as Brian remarked, I tried this and here are my findings.
Pepe
3 Likes
Hi Jesse, there was at least one guy running gas though a water bath and then up though hay I think, can’t think of his name. The Caddy is kinda like that when it gets enough condensate in the bottom of filter, I think that is a good way to filter! I don’t see how a dry filter would work because from my experience there is nothing dry in a filter after ran for a while, that’s why I think burlap would be so good, especially after a water bath!!
Thanks for sharing your expertise with different fabrics and also your work Experience with filtering, much appreciated!! HerbH
2 Likes
Hey Pepe,
I went back and reread
And I huess I was a bit thin skinned
Sorru I took things the wrong way
Jesse
3 Likes
No problem, Jesse, and we move on, thank you.
Pepe
2 Likes
Perlite (course sizing) works excellent, and can be reused… Not sure about biomass gasification, but for charcoal gasification, it’s a top-notch particulate filter.
1 Like
Bbq lava rock and then wool blanket material
1 Like
Troy, Have you tried charcoal as filter media? To what are you comparing Perlite when you call it excellent? How is it made reusable? Do you have a suggestion for cross section and depth per horsepower or engine displacement?
2 Likes
I have not tried charcoal as a filter… With perlite also having a massive surface area, and it being white, I just stopped experimenting with cloth, paper filters, and foam when I could “see” what I was filtering… To reuse, we simply shake it out with a fine sieve, and put a blow torch to it to incinerate any fines that are caught in to nooks and crannies… it’s also so cheap that you can toss the used batch into your compost pile and start fresh.
I don’t know if it’s the ultimate particulate filter, but I really like it. I don’t see a need to switch.
As for depth and cross section… I just wing it. I treat it like charcoal in that I “eyeball” the size of the grains, and imagine the breathability within my filter box.
Caveat: you must use the course grade perlite and sift it for fines.
2 Likes
I appreciate this quick reply. I’ll give coarse, screened perlite a try.
Excellent… let me know how you like it!
Very interesting discussing different filtering possibilities, I don’t know anything about perlite but might check into it. As Wayne and many others have shown hay is hard to beat and you can’t beat the price!
Is anyone using burlap?? Seems like it would work good rolled up several times around what ever the size of the exit, clamped, other end zip tied, how ever long you wanted it!! Wouldn’t need a very big container, easily replaced or washed, anyone doin that? Any thoughts?? Just thinkin!!! Herb
1 Like
Herb, If you go back to comment 57, 59,61 of this thread, you will see burlap has been discussed before.
1 Like