[Stoves] The Combined Heat and Biochar Gasifier

Wed May 3 01:50:01 CDT 2023

Ron,

My email was not delivered to main at biochar.group.io

Paul

On Wed, May 3, 2023 at 1:17 PM Paul Olivier <paul.olivier at esrla.com> wrote:

> Ron,
>
> PM2.5 and CO emissions of biochar kilns should not exceed the norms set by
> the WHO.
> One has also to take into account ambient air pollution.
> Also, biochar kilns should not waste heat, since the demand for high-grade
> heat is fairly endless.
>
> If one needs a lot of heat and a lot of biochar, there is this 80 kW
> gasifier:
>
> [image: image.png]
> [image: image.png]
>
> Also, I designed torch gasifiers that are much cheaper than what you see
> above.
> A torch gasifier can be used to bake bricks, ceramics and so forth.
> This is a 500-800 torch gasifier:
>
> [image: image.png]
> Since a torch gasifier does not have a multiplicity of burners, it costs a
> lot less.
> I also designed downdraft torch gasifiers.
> It would be easy to design 200 kW torch gasifiers.
>
> Many thanks.
> Paul Olivier
>
>
>
> On Wed, May 3, 2023 at 12:06 PM Ronal Larson <rongretlarson at comcast.net>
> wrote:
>
>> Paul:, Stoves list and (added) biochar list
>>
>> These are wonderful numbers.  Congratulations.
>>
>> I add the biochar list, where we seldom hear of emissions.
>>
>> I know that some biochar production facilities have to pass EPA
>> regulations in the US (and similar in other countries).  Can anyone report
>> what regulations they have had to meet (and how hard) - similar to Paul”s
>> for WHO?
>>
>> RON
>>
>>
>> On May 1, 2023, at 3:41 AM, Paul Olivier <paul.olivier at esrla.com> wrote:
>>
>> The PM emissions from my gasifier averaged 9.1 micrograms per cubic meter
>> over 24 hours. In its definition of a clean cook stove, the World Health
>> Organization stipulates that PM emissions should not exceed 25 micrograms
>> per cubic meter. No problem here with respect to particulate matter: 9.1
>> micrograms is well below 25 micrograms.
>>
>> According to WHO guidelines, carbon monoxide emissions should not exceed
>> 28.40 ppm over a one hour period. The Lotus Fire Gasifier emitted very
>> little CO over a one hour period: only 3.925 ppm (well within the WHO
>> guidelines). The average CO emissions over 24 hours according to the WHO
>> guidelines should not exceed 5.68 ppm. The average CO emissions of the
>> gasifier was 0.491 ppm (again well within WHO guidelines).
>>
>> So my gasifier easily meets standards set by the World Health
>> Organization in terms of particulate matter and carbon monoxide emissions.
>> About 50% of Vietnamese households burn firewood. The health problems
>> associated with this practice are truly horrendous. Burning firewood is one
>> of the leading causes of mortality in Vietnam. If these households stopped
>> burning firewood and used gasifiers, households would be protected from
>> toxic levels of human carcinogens, and human health in Vietnam would
>> improve dramatically.
>>
>> --
>> Paul A. Olivier PhD
>> 104/43 Phu Dong Thien Vuong
>> Dalat
>> Vietnam
>>
>> Louisiana telephone: 1-337-447-4124 (rings Vietnam)
>> Mobile: 090-694-1573 (in Vietnam)
>> Skype address: Xpolivier
>> http://epwt.vn/en/home/
>> [image: Slide29.JPG][image: Slide24.JPG][image: Slide35.JPG]
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>>
>>
>
> --
> Paul A. Olivier PhD
> 104/43 Phu Dong Thien Vuong
> Dalat
> Vietnam
>
> Louisiana telephone: 1-337-447-4124 (rings Vietnam)
> Mobile: 090-694-1573 (in Vietnam)
> Skype address: Xpolivier
> http://epwt.vn/en/home/
>

-- 
Paul A. Olivier PhD
104/43 Phu Dong Thien Vuong
Dalat
Vietnam

Louisiana telephone: 1-337-447-4124 (rings Vietnam)
Mobile: 090-694-1573 (in Vietnam)
Skype address: Xpolivier
http://epwt.vn/en/home/
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