[Stoves] converting solid biomass into liquid or gaseous fuel

[Cookswell Jikos]

Hi Crispin,

On a similar note - I was just reading about China's 'Operation Green
Fence' -
http://www.plasticsnews.com/article/20130711/NEWS/130719986/hong-kong-recycler-sees-pyrolysis-as-hedge-against-chinas-green-fence
it seems that plastic and tyre pyrolysis is a growing industry - the
smallest sized one I could find was this one -
http://www.urjas.com/plastic-pyrolyser.php

I personally really like the idea of a plastic recycling machine that make
3d printer filament, like this one - https://www.filabot.com/ now if only
it could use dirty, straight off the street plastic!
Until then, companies like this http://www.ecopost.co.ke/ are very very
nice to have in the Kenyan market.

Best,

Teddy



*Cookswell Jikos*
www.cookswell.co.ke
www.facebook.com/CookswellJikos
www.kenyacharcoal.blogspot.com
Mobile: +254 700 380 009
Mobile: +254 700 905 913
P.O. Box 1433, Nairobi 00606, Kenya

Save trees - think twice before printing.






On Thu, Sep 1, 2016 at 9:31 PM, Crispin Pemberton-Pigott <
crispinpigott at outlook.com> wrote:

> Dear Dale
>
>
>
> How good to hear from you.
>
>
>
> I write with respect to your interesting comment on the production oil by
> heating plastic.
>
>
>
> First, I met a guy who claimed that in future all garbage sorting at the
> point or origin would only divide things into two piles: organic and
> inorganic, the latter being metals, sand and so on. He said everything else
> can be turned into methanol, and that methanol can be turned into anything
> we want like plastic, oil, fertiliser and chemicals. He was very
> enthusiastic about this because it offered a way to deal with a lot of the
> garbage we presently ‘throw away’.
>
>
>
> Second, whenever there is a fire in a large pile of car tires (which are
> usually stored in piles not mixed with other waste streams) large amounts
> of oil are seen running out of the pile. I know of one case where a man
> pumped up 3000 gallons of oil that accumulated in a low point. He sold it
> to an oil recycling depot. So why can’t we heat tires in a simpler manner
> and turn it into oil? The temperature involved cannot be all that high
> because it happens under open fires.
>
>
>
> There is/was a power station in the UK specifically designed to burn
> tires. It had to cope with very high temperatures as the tires contain a
> lot of oxygen, apparently (that is my guess) resulting in a low combustion
> air requirement. That in turn means the excess air level is low and the
> combustion temperature consequently elevated.
>
>
>
> So far I have not successfully burned rubber cleanly in any device. I
> think it needs a very long residence time. It would be far better to turn
> it into oil, unless there is a large source of supply and a purpose-built
> power station.
>
>
>
> Best regards
>
> Crispin
>
>
>
>
>
> At the recent Stove Summit, there was a presentation by a student from the
> University of Kentucky, where they’ve found that most types of plastic, if
> heated, melted, boiled, and raised to the right temperature range, form a
> pretty good quality liquid fuel oil.  The hardware is simple and applicable
> to biomass heat, but it takes a fair amount of energy to melt and boil the
> plastic.  I’ll attach a photo of the amount of fuel oil he got in a simple
> demonstration with 4 empty 1-gallon plastic milk cartons.  He said for each
> gram of plastic you can get something like 0.9 grams of fuel.  The
> technology is simple and can be made on a small scale, but then how much
> waste plastic is available?.  Would it work with common biomass, probably
> not?
>
>
>
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