[Stoves] Making and selling char in India

[Nikhil Desai]

Crispin:

Delighted!! This is a radical proposition - " There is a need for a
process, a design, for dealing with fuels that require a long residence
time at high temperature."

This is off-topic, and should end here. I hope some chemist type has an
interest in comparable biomass if such exists or can be manufactured.

I did some peripheral research on coal chemistry and biomass cofiring in
early to mid-1990s. I then discovered many more types of coal than in the
power generation and metallurgy markets and learned the complex
interactions of physical and economic efficiencies in furnace design and
operations, of the tradeoffs between operational flexibility and fuel spot
markets, and of emissions compliance and local environmental impacts (not
just air quality).

The stove/fuel advocacy has never addressed these interactions. Leave aside
all the "non-scientific" issues like foods, nutrition, cooking cycles,
seasonality; the core problem of ideological hysteria - as ever and
everywhere - is gross simplification. Fixing the biomass type in WBT is one
such inanity. Defining all solid fuels as dirty and all coals as
carcinogenic is another.

I remembered fuel coke for household cooking in India. Low-vol bituminous
coal for steam generation in US. Adaptation of fuels and combustors
according to economics and preferences - and vice versa - is something
received "stove science" seems to studiously ignore.

What gives? Why are we so studiously blinded? Because we are paid to?

I am cc'ing Darpan and Anil to see if they know this Jhama coal in India.
http://www.coaljunction.in/misc/show/Coaljunction-Product-Details_1#sthash.7HGOtvNC.dpbs


N


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Nikhil Desai
(US +1) 202 568 5831
*Skype: nikhildesai888*



On Mon, May 6, 2019 at 9:50 AM Crispin Pemberton-Pigott <
crispinpigott at outlook.com> wrote:

> Dear Nikhil
>
> >And how could you forget char as soil enhancer for the voluntary carbon
> market?
>
> Unfortunately, I suspect there is more soil enhancement available from all
> the BS that accompanies the char-in-ground than from the char-in-ground.
>
> I am a big fan of volunteerism. If people want to fund things for goals
> they admire, who am I to object?  Just don’t make it compulsory.
>
> The problem with ideological possession is that the ideologically
> possessed keep trying to implant their ideology the minds of others.
>
> I have a new challenge for stove builders.  Today I got a message from
> Wojciech Treter in Poland about the “highest quality” coal used in home
> heating. He says it is a caking coal. That makes excellent coke (nearly
> pure carbon plus all the ash) but it is difficult to combust the
> intermediate species on a small scale.  The same would apply to certain
> very hard woods that produce toxic emissions (see the FAO for a list).
> There is a need for a process, a design, for dealing with fuels that
> require a long residence time at high temperature.
>
> I am thinking that the Rocket Mass Heater (not to be confused with a
> Rocket Stove) with a very small diameter riser might be just the thing,
> lined with a suitable refractory material such as a phosphate bonded
> alumina. Maybe in the form of a split cylinder.
>
> If you wanted to extract the useful hydrocarbons from the fuel and then
> leave a high carbon remnant this needs a new type of combustor.
>
> Regards
> Crispin
>
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