[Stoves] Upgrading charcoal by washing it

[Dan Dimiduk]

Neil, I see a lot of reason to wash the char. Fertilizer keeps getting more expensive. Major deposits of phosphate and potash have been monopolized. The majors will not allow small scale competition unless you are too small to care about. 

Sent from my Verizon Wireless 4G LTE DROID

neiltm at uwclub.net wrote:

>On 21 Sep 2016 at 9:26, Anand Karve wrote:
>
>> Dear Stovers,
>> we have developed a TLUD process for making charcoal by charring
>> agricultural waste. Since a lot of the agri-waste comes from grain crops
>> belonging to the family Poaceae, the ash content is rather high due to the
>> silica in the plants. Mineral coal is washed in order to reduce its ash
>> content and to increase its calorific value. I was wondering if the same
>> can be done in the case of charcoal.I can of course conduct a few
>> experiments and find the answer, but I would be grateful to the list if
>> somebody knows the answer and provides it to me.
>
>I used to quench my TLUD char with water, but because it is porous, it 
>then had to be dried.  Now I 'quench' the char by placing it in  biscuit 
>tin and excluding the air.  It cools very rapidly.  When the tin is 
>getting full I riddle the contents with a fine mesh which gets rid of all 
>the ash, but retains quite small particles of char which I burn on my 
>BBQ, sometimes with the assistance of a computer fan, at least at start 
>up.  Whether you might have issues of scale and type of char, and amount 
>of ash that might mitigate against doing it that way I can't say.  I 
>can't see any advantage to using water to wash the char from 
>microgasifiers.  Coal, AFAIK is not porous like charcoal, so might dry 
>more easily?
>
>Best wishes,   Neil Taylor
>
>> Yours
>> A.D.Karve
>> ***
>> Dr. A.D. Karve
>> 
>> Chairman, Samuchit Enviro Tech Pvt Ltd (www.samuchit.com)
>> 
>> Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)
>> 
>
>
>
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