[Stoves] SPAM: Re: Charcoal from waste - home cooking or other markets? (Re: Crispin, Anand Karve)

[nari phaltan]

Dear Rolf,

I think it might work since we tested the gasifier for a company which
wanted their slag melted. It did the job though we did not test it very
much. The flame temperatures were always in the range of 1100-1200 degrees
C. I think one can design the furnace to get these temperatures
continuously.

All the best.

Anil

Nimbkar Agricultural Research Institute (NARI)
Tambmal, Phaltan-Lonand Road
P.O.Box 44
Phaltan-415523, Maharashtra, India
Ph:91-2166-220945/222842
e-mail:nariphaltan at gmail.com
           nariphaltan at nariphaltan.org

http://www.nariphaltan.org

On Fri, Oct 7, 2016 at 12:15 AM, Energies Naturals C.B. <
energiesnaturals at gmx.de> wrote:

> Dear Anil and others,
>
> the low density gasification is very interesting.
> A friend of mine, a ceramist, has develloped a unique way to recycle
> granite and slate waste from cutting and grinding into a very strong and
> resisting ceramic .
> For this, she needs 1250 - 1300 °C.
> Do you know whether your described gasifyer-kiln combination can reach
> this high?
>
> Our fuel would be low grade forest waste, coarsly shredded oak and pine
> branches.
> The bulk density is around 100 - 150 kg.
>
> It would make a fine project if it worked!
>
> Rolf
>
>
>
> On Thu, 6 Oct 2016 16:55:00 +0530
> nari phaltan <nariphaltan at gmail.com> wrote:
>
> > Hi stovers,
> >
> > It is very wasteful to convert agricultural residues to char in simple
> > containers. The ensuing pollution and heat transfer makes it very
> > inefficient. A better way is pyrolysis/gasification that we did long
> > ago (1995). www.nariphaltan.org/Gasifier.pdf
> >
> > Cheers.
> >
> > Anil
> >
> > On 10/6/16, Ken Boak <ken.boak at gmail.com> wrote:
> > > Hi Teddy, Tom, List
> > >
> > > Thanks for that very useful link to the Thailand charcoal gasifier
> site.
> > >
> > > My interest lie in a simple low tech charcoal gasifier, and a
> conversion
> > > aimed at the single cylinder Lister, Petter and Changfa type diesel
> engines
> > > that are very common in India, Asia and Africa.
> > >
> > > I'd like to make a "magazine" that holds several briquettes,  like
> bullets
> > > in the chambers of a revolver, and so even slightly damp, fresh biomass
> > > briquettes could go through a drying stage, a pyrolysation stage - and
> once
> > > completely converted to charcoal, a gasification stage.
> > >
> > > The dryer and pyrolyser are driven from the hot engine exhaust and
> > > supplemented by burning the tars and volatiles - the pyrolysis gas.
> > >
> > > Separating drying and pyrolysation in separate chambers from the
> > > gasification, means that the volatiles and tars produced in the
> pyrolysing
> > > process can be kept completely separate from the gasification - and
> result
> > > in a very low tar gas - which is more acceptable and forgiving to the
> > > engine valve gear.
> > >
> > > Initial tests were conducted (spring 2012 at APL) in pyrolysing 3
> litres of
> > > woodchips (0.8kg) directly  with a Lister exhaust.
> > >
> > > These tests showed that complete conversion of  to charcoal could be
> > > achieved within 45 minutes - just by direct action of the hot  Lister
> > > exhaust through the container holding the chips.
> > >
> > > After 20 minutes of such direct heating action, the emerging gas was
> > > sufficiently rich in hydrocarbons to sustain a flame.
> > >
> > > After 45 minutes there was no further smoke, and on examination I was
> left
> > > with a fine charcoal similar to biochar - about 20% by volume of the
> > > original woodchip sample. Whilst this might not appear a good charcoal
> > > conversion efficiency - half of the charcoal fines were blown out of
> the
> > > container by the pulsating Lister exhaust!
> > >
> > >
> > >
> > >
> > >
> > > Ken
> > >
> >
> >
> > --
> > Nimbkar Agricultural Research Institute (NARI)
> > Tambmal, Phaltan-Lonand Road
> > P.O.Box 44
> > Phaltan-415523, Maharashtra, India
> > Ph:91-2166-220945/222842
> > e-mail:nariphaltan at gmail.com
> >            nariphaltan at nariphaltan.org
> >
> > http://www.nariphaltan.org
> >
> > _______________________________________________
> > Stoves mailing list
> >
> > to Send a Message to the list, use the email address
> > stoves at lists.bioenergylists.org
> >
> > to UNSUBSCRIBE or Change your List Settings use the web page
> > http://lists.bioenergylists.org/mailman/listinfo/stoves_
> lists.bioenergylists.org
> >
> > for more Biomass Cooking Stoves,  News and Information see our web site:
> > http://stoves.bioenergylists.org/
> >
>
>
> --
> Energies Naturals C.B. <energiesnaturals at gmx.de>
>
> _______________________________________________
> Stoves mailing list
>
> to Send a Message to the list, use the email address
> stoves at lists.bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
> http://lists.bioenergylists.org/mailman/listinfo/stoves_
> lists.bioenergylists.org
>
> for more Biomass Cooking Stoves,  News and Information see our web site:
> http://stoves.bioenergylists.org/
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20161007/7efc43bb/attachment.html>