[Terrapreta] Wood vinegar production

[Robert Flanagan]

See http://terrapreta.bioenergylists.org/

 

Thanks Gerald for that info,

 

Regarding vinegar (liquid smoke) I thought I'd give you some info on how
it's produced here. I've attached a few photos of two charcoal/vinegar
reactors. The paddle reactor can heat the biomass via external heat provided
by lighting a fire below the sealed upper chamber. Then the biomass is
constantly turned to get a uniformed temperature. The key to high quality
vinegar production is to take the biomass up to just below it go's
exothermic (For bamboo that is 285C) and hold it until all the vinegar is
collected. Jeff at this point you could always feed the hot biomass into
your gasifier. This is the same reactor I used to make the 50Kg's of
research charcoal that I sent to ten university's last year. 

 

The other reactor is a 1.5T (Feed) charcoal reactor that we've been working
on. We just borrowed one of the condensers from a paddle reactor at this
point. We produce about 400Kg of vinegar for each 1.5T input as our
feedstock is quite dry (around 35% moisture content), so you don't need a
lot of biomass to produce all you need of vinegar. The vinegar is left in
the sun for about four weeks to allow the tar to separate and settle to the
bottom. 

 

The major difference between charcoal produced by pyrolysis and gasification
is as follows. When you take the biomass into it's exothermic range with
pyrolysis and limited oxygen the exothermic curve should pan out about 400C.
With downdraft or TLUD gasification you pass primary air through the biomass
to a hot carbon layer you flaming pyrolysis will never be lower than 600C,
so your exothermic range just jumped from 285 to 600C. This is a very clean
way to make charcoal from biomass with a low moisture content. 

 

 

Regards,

Rob.



 

On 7/31/07, Gerald Van Koeverden <vnkvrdn at yahoo.ca> wrote: 

I've translated some of the pesticide uses of wood vinegar from the
Thai language on the A.T.A. web site: 

1.  for fungus (mildew?) on tomatoes and cucumbers, spray at a
concentration of 1:200
2.  for tomato root rot, water base of plant at concentration of 1:200
3. for cabbage, to repel insects, use concentration of 1:1500 in 
watering can
4. for corn, to repel insects, spray 1:300 concentration

Gerrit

On 30-Jul-07, at 11:33 PM, Jeff Davis wrote:

> Robert wrote:
>> Another product that is a bi-product of charcoal production that 
>> is said
>> to
>> work as an effective pesticide is bamboo vinegar (Liquid smoke).
>
> Robert, I was thinking about that. My Gas-of-Fire produces
> something like
> that and I was considering giving that a try. I bet just the smell 
> would
> do the trick.
>
> Hmmmmm, so with the correct gasifier we can produce a gas fuel to
> heat our
> green house (well, maybe I need one), charcoal for Terra Preta and
> now a 
> pesticide!
>
>
> I hope this all works out!!!!
>
>
>
> Jeff
>
>
>
>
> --
> Jeff Davis
>
> Some where 20 miles south of Lake Erie, USA 
>
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-- 
Robert Flanagan
Chairman & President
Hangzhou Sustainable Agricultural Food & Fuel Enterprise Co., Ltd.

Tel:   86-571-881-850-67
Cell:  86-130-189-959-57 

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