[Stoves] Pyrolysis adaptation for tea factory

Ronal W. Larson rongretlarson at comcast.net
Mon Mar 7 13:30:20 CST 2016


Anil: cc list

	 Excellent report.   I today recommended to Pablo Chinese systems, but obviously Indian designs should also be considered (especially by those closer to India than China).  Are any of the designs you describe available for purchase by Pablo now?

	A key sentence in your 1996 paper is:  “The system also produces char, which is about 24% by weight of the original fuel.”     Many people will miss this feature - as most machines using the term “gasifier”  attempt to consume all the char.

	I also recommend your:  http://nariphaltan.org/gasifierhistory.pdf <http://nariphaltan.org/gasifierhistory.pdf> .  I was unaware that you were doing such excellent work so early.

Ron


> On Mar 7, 2016, at 9:03 AM, Nariphaltan <nariphaltan at gmail.com> wrote:
> 
> You might look at this system that we developed long ago for leafy biomass. Www.nariphaltan.org/Gasifier.pdf
> 
> All the best.
> 
> Anil K Rajvanshi
> 
> Sent from my iPad
> 
> 
> 
>> On 07-Mar-2016, at 4:03 PM, Pablo <pgonzamail at yahoo.es> wrote:
>> 
>> Dear All,
>> 
>> I am following the group and I find it very interesting. Thank you to all for your contributions.
>> 
>> I work in tea in China in a private initiative project aimed to increase the sustainability of the organic tea garden and the local community. Among other actions, some money is allocated every year to finance small projects. I am looking into biochar stoves to improve efficiency use of firewood of the local households (currently burning wood and coal), however what I am more interested in at this moment is into the possibilities of using pyrolysis to supply the energy needed for tea processing while enjoying other benefits (i.e., biochar for the tea garden soil, waste management by using alternative feedstock such as pig sludge, producing vegetable coal,…).
>> 
>> I am not sure if this is the right place to raise the question … but I go on:
>> 
>> I know there exists pyrolysis systems to generate heat but the scale is too large for the needs in the tea factory. I have explored with some companies and the minimum feeding rate of the module is 250 kg/hr of biomass and our needs lay somewhere 300-600 kg/day of biomass (12-24 kg/hour). So my question is, do you know if pyrolysis modules to produce heat (and biochar as side product) can be scaled down to what I need? And, if yes, do you know of any company working on this?
>> 
>> Thank you very much! and sorry if my question was raised in the wrong place.
>> 
>> Warm regards,
>> 
>> Pablo
>> 
>> Brief description of the area: The tea factory is located in a remote mountain area (see some pictures attached). In the factory the tea is first heat up to stop enzyme activity, then is rolled and finally roasted. Currently the first heat up and roasting is done using wood and vegetable coal and the rolling uses electricity. To process the tea of one year the factory uses 50 ton of wood trunks (big trunks, with some water content), 5 ton of wood brunches (as fire starter, dry thinner wood), 3.5 ton of vegetable coal and 35 MWh.
>> 
>> <Letter for pyrolysis adaptation to tea factory_pictures.pdf>
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