[Gasification] Edited Text on the Chinese Gasifier

[Peter Singfield]

Hey Doug -- your back!!

Great -- now i really will start assembling this unit as soon as possible!!

By the way -- I have found no valve in the parts-box for that one inch pipe
sticking out the top -- 

Is it possible -- as you point out below -- there is no valve involved??

I was simply jumping to ignorant conclusions --

>I have some new photos of a old KENT charcoal gasifier made in Australia 
>(WW2)that I inspected recently. These things were no brainers, and probably 
>all you need. I will try to do a text over the weekend and post them on the 
>Fluidyne Archive next week.

Great!! 

Doug -- is there fuel conformity sizing involved with charcoal in a
gasifier -- and is so -- how so??

Meaning -- do I have to break up my charcoal and screen it for uniform size
consistency -- or what??

For start up I will simply be buying and using the local charcoal they sell
here for cooking. Which is quite large lumpy stuff.

I better get some tomorrow and post pictures.

And last -- can you join my tiny little Belize mail list so we can freely
post pictures and graphics back and forth?? It already has 21 members newly
subbed specifically interested in this micro project. 

Just do this if your so inclined:

Send a blank Email to this address:

belize-subscribe at lists.belizeculture.com

And you on.

did you see the pictures of this small gasifier yet??

Peter / Belize

At 04:43 PM 11/16/2006 +1300, doug.williams wrote:
>
>Peter,
>
>You are missing the vital factor:
>
>> but they suggest lighting when half filled -- and the blower running --
>> then after that --
>> "Put straw into the gasification device until half of it is full. Ignite
>> the straw in the gasification device, and add more straw into it until it
>> is completely full"
>
>If the fire was left to burn on top of the straw without filling, it would 
>burn towards the throat, it has no other option.
>
>> Dry straw burns like gasoline -- so probably -- by the time you have 
>> filled
>> it and capped it -- the "fire" is down in the "throat" -- and staying 
>> there.
>
>No, it then starts to burn the straw towards the incoming air, to form the 
>oxidation zone, and the staw beneath carbonozes into the reduction char 
>zone.
>
> > I imagine by adjusting the air in valve at the very top you control just
>> where the burn stays?? And thus -- your gas quality.
>
>Sort of right, but the angles of the internal cone provide the specific 
>velocity, in a way matched for the total air flow of the valve fuelling a 
>two burner stove. Really in this situation, the top air valve is just a 
>on-off valve. If one burner is used, the fire climbs slowly towards the air 
>increasing the char bed and reduction zone, so cleaner gas might be 
>expected. It might stablize below the top of the fuel pile, but once it 
>reaches the top of the fuel pile,( the refuelling point) it then starts to 
>burn down towards the throat until it stops as it runs out of carbon.
>
>> For conversion to run on charcoal I plan to insert an air pipe feed from
>> top lip directly to the proper area -- just above the grate?? (Help!!) and
>> put the same valve supplied on that for regulation.
>
>I have some new photos of a old KENT charcoal gasifier made in Australia 
>(WW2)that I inspected recently. These things were no brainers, and probably 
>all you need. I will try to do a text over the weekend and post them on the 
>Fluidyne Archive next week.
>Regards,
>Doug Williams,
>Fluidyne Gasification.
>
>