[Stoves] Char used for cooking

Thu Sep 21 11:38:37 CDT 2017

Nikhil, Stovers,

Thinking the more uses we have for char the more values it will have. From past studies when I worked in a real lab I tested different gass take-up using high activity chars. Propane, butane and methane are the gasses I had available. 

I used charred peat to take up methane. This due to the problems in northern Canada and my own curiosity. Perhaps a research direction. But also char stored at the top of an anaerobic digester in bags? or clean up of low levels in an off gas running through a bag of char? Then used as increased energy char for heat or cooking. 

Just research ideas.

Regards

Frank 

> On Sep 21, 2017, at 9:25 AM, Nikhil Desai <pienergy2008 at gmail.com> wrote:
> 
> Frank: 
> 
> This too is beyond my pay grade, and I was afraid to ask, but now please enlighten me -- what is the idea here? 
> 
> That peat or some other form of low-energy density biomass when ignited with gas under controlled conditions yields higher char yield? I doubt that. Gases from combustion should do that job. 
> 
> Or are you suggesting that some char, once made, be mixed with gas and packed in a certain way? That too is beyond my imagination.
> 
> What precisely do you mean by making a gas into a solid? Any comparable parallel in combustion alternatives?
> 
> Because, rather than household cookstoves, you might be on to something radical for on-land flared gas. A lot of small oil fields are neglected if they are too gassy. If gas can be used, combined with waste biomass in the area, to produce a higher-density solid fuel, there might be a market without the hassle of tankers or pipelines. 
> 
> I am still confused. 
> 
> Nikhil
> 
> ------------------------------------------------------------------------ 
> 
> 
> On Thu, Sep 21, 2017 at 11:40 AM, Frank Shields <franke at cruzio.com <mailto:franke at cruzio.com>> wrote:
> Nikhil and Stovers,
> 
> Point being we can load a good char with 8g of butane for every 100 g char for a typical char. Thats a lot of added energy per volume - I am thinking. Butane is not the only gas it will take up.Methane is another from past experimenting to see of Canadian Peat that is charred will take up CH4. More research needed. 
> 
> Could be a good way to make a gas into a solid easy to transport? store? Perhaps increasing the energy value of char when used for cooking? Perhaps useful in other ways. Easy to start a fire. 
> 
> Frank
> 
> 
> 
> 
> 
> 
> 
> 
>> On Sep 21, 2017, at 7:31 AM, Nikhil Desai <pienergy2008 at gmail.com <mailto:pienergy2008 at gmail.com>> wrote:
>> 
>> Andrew: 
>>  
>> What "heavy metals" in what kind of biomasses? 
>> 
>> This is a new one for me. 
>> 
>> Nikhil
>> 
>> On Thu, Sep 21, 2017 at 4:09 AM, Andrew Heggie <aj.heggie at gmail.com <mailto:aj.heggie at gmail.com>> wrote:
>> On 21 September 2017 at 06:30, Frank Shields <franke at cruzio.com <mailto:franke at cruzio.com>> wrote:
>> > Stovers,
>> >
>> > When i do a butane activity test I pass butane gas through the char and a
>> > good char will take up ~ 20g butane for every 100 g dry char. Most is around
>> > 8 g added to 100 g dry.
>> 
>> This is adsorption?  Presumably the more internal surface area the
>> more butane is retained. Most chars are only mildly activated and the
>> effect is increased many fold by treating the char with an oxidant
>> that will "pit" the structure.
>> 
>> >On a volume basis there should be an increase in
>> > energy. Filling stoves is done on a volume basis. Not sure about increase of
>> > energy on a weight basis.
>> 
>> As butane has three times the calorific value of wood it should be
>> more but what's the point, for cooking, in devolatising wood to make
>> char just to add a gas back?
>> 
>> 
>> >Butane is what I use but the char will take up
>> > other organic gases.
>> 
>> ... and heavy metals apparently
>> 
>> Andrew
>>   
>> 
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> 
> Thanks
> 
> Frank
> 
> Frank Shields
> Gabilan Laboratory
> Keith Day Company, Inc.
> 1091 Madison Lane <https://maps.google.com/?q=1091+Madison+LaneSalinas,+CA+%C2%A093907&entry=gmail&source=g>
> Salinas, CA  <https://maps.google.com/?q=1091+Madison+LaneSalinas,+CA+%C2%A093907&entry=gmail&source=g> 93907 <https://maps.google.com/?q=1091+Madison+LaneSalinas,+CA+%C2%A093907&entry=gmail&source=g>
> (831) 246-0417 <tel:(831)%20246-0417> cell
> (831) 771-0126 <tel:(831)%20771-0126> office
> 
> franke at cruzio.com <mailto:franke at cruzio.com>
> 
> 
> 
> 
> 

Thanks

Frank

Frank Shields
Gabilan Laboratory
Keith Day Company, Inc.
1091 Madison Lane
Salinas, CA  93907
(831) 246-0417 cell
(831) 771-0126 office

franke at cruzio.com

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