[Stoves] [biochar] PRE-processing of husks and shells of coconuts to be fuel ..... was Re: Char from coir Re: Biochar Inquiry

Paul Anderson psanders at ilstu.edu
Tue Apr 22 10:38:01 CDT 2014


Ted,

Activated charcoal is prepared at high temperatures, and has minimal 
volatile matter to assist with ignition and for maintaining easy 
combustion.   Needs high temp to get it burning again.

Paul

Doc  /  Dr TLUD  /  Prof. Paul S. Anderson, PhD
Email:  psanders at ilstu.edu
Skype: paultlud      Phone: +1-309-452-7072
Website:  www.drtlud.com

On 4/22/2014 8:11 AM, Ted Wysocki wrote:
> Hello Dr. Anderson, everyone,
> The coconut meat has a high level of oil, which adds increase BTU 
> heating values to the fuel.
> I have tried pelletized activated carbon ( coconut shell feedstock ) 
> in a standard wood pellet stove, but did not work well.
> However minor modification of the burn chamber should correct that.
> Ted.
>
>
> ------------------------------------------------------------------------
> Date: Tue, 22 Apr 2014 07:44:17 -0500
> From: psanders at ilstu.edu
> To: biochar at yahoogroups.com
> CC: stoves at lists.bioenergylists.org; lhelferty at biochar.ca; 
> teddykinyanjui at hotmail.com; tswysocki at hotmail.com; 
> johnathon.caguiat at mail.utoronto.ca
> Subject: Re: [biochar] PRE-processing of husks and shells of coconuts 
> to be fuel ..... was Re: [Stoves] Char from coir Re: Biochar Inquiry
>
> Dear Joshua,
>
> THANKS for your reply.   It provides encouragement for further discussion.
>
> Would you please do the following:
> 1.  Tell us more about yourself and your activities in Honduras, 
> including where in that country.
> 2.  What is the size of the TLUD you use with the coconut husk and nut 
> fuel?
> 3.  What is the arrangement for the combustion of the pyrolytic gases?
> 4.  Do you utilize the heat that is created from those gases?
>
> Paul
> Doc  /  Dr TLUD  /  Prof. Paul S. Anderson, PhD
> Email:psanders at ilstu.edu  <mailto:psanders at ilstu.edu>    
> Skype: paultlud      Phone: +1-309-452-7072
> Website:www.drtlud.com  <http://www.drtlud.com>
> On 4/21/2014 9:16 PM, Joshua Bogart wrote:
>
>     I have worked with coconut, husk sometimes just the coir and
>     sometimes the coir an shell together, sometimes with the coconut
>     meat inside. Here in Honduras coconuts are sold in roadside stands
>     mostly for the water. After the water is drank out with a straw
>     the the nut, shell, husk and all is thrown in a pile beside the
>     stand.  I dry the resulting nuts and burn them in a TLUD or in a
>     slash pile. The coir simply falls apart, into powder when
>     carbonized and the shell needs some mechanical processing.  I
>     can't say how good the resulting biochar is because I mix with
>     other types of biomass. But the whole or half nuts burn well in a
>     TLUD.
>
>
>     On Fri, Apr 18, 2014 at 4:07 PM, Paul Anderson <psanders at ilstu.edu
>     <mailto:psanders at ilstu.edu>> wrote:
>
>
>         Thank you, Michael, for your insightful coments (below).  
>         Here are some thoughts in response:
>
>         1.  I focus on places where husks and shell accumulate.   What
>         is processed is wonderful.   May it continue and prosper.  
>         But there are piles (I have been assured) in many places.
>
>         2.  I am envisioning piles of husks (skin, pith, and coir),
>         some with shell still attached.   Perhaps in shape of about
>         1/3rd to 1/5th of the whole coconut.   Some might still be
>         intact.   A pile in the sun.   could be spread out for
>         sun-drying.   A bit of dirt or sand does not matter.
>
>         3.  If the shell is actually separate (because of prior
>         processing), it is an issue of smashing tough semi-spherical
>         pieces of shell.  SMASH without much concern about some of the
>         pieces becoming too small should NOT be of much concern.  
>         Allow for some waste of "too small" pieces.  Lift a
>         substantial weight and let it fall requires effort,but I
>         suspect that someone can make some suggestions that yield a
>         net gain because the shell is SOOOOO good as a TLUD fuel.  
>         Like pellets in some ways.   And pellets require substantial
>         energy to be made.
>
>         4.  Mainly about the husk pieces (but possibly related to
>         shell also), I want to suggest and discuss the drying and even
>         the partial (maybe full??) torrification of that biomass.  
>         After all, WASTE heat is one of the abundant leftovers of
>         burning pyrolytic gases created when making char/biochar. So,
>         TOAST the stuff!!!   Really, that is more of a question than a
>         statement.
>
>         5.  What do we know about the torrification of husks (and of
>         shells) of coconuts?   Can somebody find out, please?   First
>         requirement is  that you need some husks (and shells) (sorry,
>         I do not have any).   After that, put heat to it any way you
>         want to.   If torrified husk (or shell) can be then
>         appropriately sized for use in TLUDs or any other combustion
>         device, that would be progress.
>
>         Comments (and maybe results?) are requested.
>
>         Paul
>
>         Doc  /  Dr TLUD  /  Prof. Paul S. Anderson, PhD
>         Email:psanders at ilstu.edu  <mailto:psanders at ilstu.edu>    
>         Skype: paultlud      Phone:+1-309-452-7072
>         Website:www.drtlud.com  <http://www.drtlud.com>
>
>         On 4/16/2014 4:10 AM, Michael N Trevor wrote:
>
>             Actually when dealing with coconut husk there are two elements
>             coir which it the fiber and then the pith light weigh
>             sawdust like stuff left over after mechanically separating
>             the two.
>             As is husk is rather large in volume and not very dense
>             making is a rather low grade fuel. The extracted fibers
>             have a great many uses. I believe here, it is the pith
>             that is left over that is being discussed. This can be
>             resinated and turn in to a Masonite like material. It is
>             also used as soil amendment and it can be compressed into
>             densified pellet as fuel.
>             Shell on its own is a great fuel however it is also a
>             superb charcoal as well. A process  that can reduce shell
>             into a easily used
>             gasifier fuel to produce charcoal will be a double winner.
>             Over all husk and shell are pretty tough stuff and it
>             takes some pretty serious machinery to slice dice chop and
>             grind into useable by products
>             Michael Trevor
>             Majuro Marshall Islands
>
>
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>
>
>     -- 
>
>     Skype: Joshua.bogart
>     Emial: Joshua.bogart at gmail.com <mailto:Joshua.bogart at gmail.com>
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