[Gasification] SPAM: Re: newbie question...

T. GILL maxlochangill at gmail.com
Sat Apr 4 20:20:51 MDT 2015


Hi Tom,

Thanks for the reply and feed back. Every year millions of tons of rice
straw and part of wheat straw is burnt, which leads to massive air
pollution and irreversible damage to the soil in Northern India. To make
the matter worse, this burning is done in a short period of a couple of
weeks, resulting in so much escalation in air pollution that, often people
no medical history of  asthma have problems breathing.

Although burning of the paddy is banned under the law, but implementation
of the law is difficult, and little can the achieved without improving the
awareness of the farmers and finding a Eco-friendly solution such as its
conversion to bio-char.

Well capacity of the bio-char kiln can be anything to between 2-5 mt/hr for
a fast pyrolysis and comparatively less for slow smouldering carbonization.

I am also keen on designs of temporary kilns which can be made using clay,
and can be destroyed after the straw is converted to bio-char. This
bio-char goes into soil anyway to improve the crop yield.

Regards,
Terrey

On Fri, Apr 3, 2015 at 11:08 AM, Tom Miles <tmiles at trmiles.com> wrote:

> Carbonizing wheat straw  is a challenge. It is very low yield. The straw
> itself contains enough air to support smoldering combustion. While it is
> likely that the terra preta soils in Brazil were partly from smoldering
> grasses the yield in char would have been very low. Having said that it is
> both possible and desirable to carbonize grasses. Straw gasification is
> just harder to control.  Some big bale size batch carbonizers have been
> developed in Australia. A small stale externally heated carbonizer was
> developed by ARTI in India.
>
>
>
> What scale or capacity are you looking for? Our biochar bloggers on Yahoo
> may be helpful.
>
>
>
> Tom Miles
>
> www.gasifiers.bioenergylists.org
>
> www.biochar.bioenergylists.org
>
>
>
> *From:* Gasification [mailto:gasification-bounces at lists.bioenergylists.org]
> *On Behalf Of *T. GILL
> *Sent:* Thursday, April 02, 2015 7:02 PM
> *To:* Discussion of biomass pyrolysis and gasification
> *Subject:* SPAM: Re: [Gasification] newbie question...
>
>
>
> Hi All,
>
> I am looking for a design for a  pyrolysis unit to convert hay (from
> wheat) into bio-char.
>
> Is it possible to convert the hay into bio-char with out using any
> external fuel such as coal or gas?
>
> Is it possible to use the hay as a fuel for slow pyrolysis.
>
> please give you feed back.
>
> Terrey Gill
>
>
>
> On Thu, Apr 2, 2015 at 12:01 PM, Jeff Davis <jeffdavis0124 at gmail.com>
> wrote:
>
> I think Tom has a methane list somewhere. Maybe:
>
> http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org
>
> Pyrolysis gas can have a lot of tar in it. What is your plans for that?
>
> Jeff
>
> ______________________________________________
> "Once an owner has got used to charcoal gas he will never revert to the
> more expensive fuels", Geo Bray
>
> On Apr 1, 2015 5:43 PM, "hugh" <hugh at austrop.org.au> wrote:
>
> Just joined .. and have been interested in gas from wood pyrolysisfor
> quite a while - but also in methane from bio-digestion (small scale) .. and
> haven't been able to find a suitable group
>
> Does anybody have some suggestions?
>
> Cheers
>
> Hugh
>
> (Dr) Hugh Spencer
> Australian Tropical Research Foundation
> Cape Tribulation Tropical Research Station
> PMB 5 Cape Tribulation Qld.
>
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