[Stoves] Why build charcoal making stoves? Short answer!

[rongretlarson at comcast.net]

Paul and Tom and List 

I am quite sure that none or little of the huge production of char in Brazil for their steel industry is with similar kilns and no use of the gases. Maybe not even flared. If they moved the char-making to the steel mills they would have plenty of use for the pyrolysis gases. 

But equally true around the world with less efficient kilns (pits/mounds) for residential cooking systems. 

Our US char manufacturers have no monopoly on lack of concern for the environment. 

Ron 
----- Original Message -----
From: "Paul Olivier" <paul.olivier at esrla.com> 
To: "Discussion of biomass cooking stoves" <stoves at lists.bioenergylists.org> 
Sent: Sunday, May 12, 2013 8:15:40 PM 
Subject: Re: [Stoves] Why build charcoal making stoves? Short answer! 

Tom, 

So in the batch type Missouri kiln, the wood gas is wasted along with 
a certain amount of propane or natural gas that is added to and burned 
within the process. Wow, what a waste! 

Why not chip the wood and place it in a large TLUD batch reactor that 
would produce charcoal and syngas. The syngas could be used to make 
ethanol or methanol. The same TLUD reactor could serve as a dryer and 
heat exchanger. The initial drying of the wood chips can be done quite 
inexpensively using a compost fleece. 

Thanks. 
Paul Olivier 


On Mon, May 13, 2013 at 8:34 AM, Tom Miles <tmiles at trmiles.com> wrote: 
> 
> Royal Oak hardwood lump charcoal is probably made in the Missouri plants where 80% of the lump charcoal in the US is made. It depends on the particular plant but if it is a batch type Missouri kiln then the gas would be flared with propane or natural gas used as a pilot fuel. Energy is typically not recovered from the batch kilns. Since 2005 emissions from all charcoal kilns have been regulated. One supplier recovers fines from these kilns and sells it as biochar in a compost blend. 
> 
> 
> 
> When sawdust is converted to charcoal the energy is sometimes recovered in boilers. We had a couple of these (Royal Oak) installations with heat recovery in Oregon until they were bought by Kingsford and eventually closed. The energy was used in an adjacent wood plant. For sawdust it has been more common to use multiple hearth kilns with auxiliary natural gas burners to control temperatures. 
> 
> 
> 
> Tom 
> 
> 
> 
> From: Stoves [mailto:stoves-bounces at lists.bioenergylists.org] On Behalf Of Paul Olivier 
> Sent: Sunday, May 12, 2013 5:59 PM 
> 
> 
> To: Discussion of biomass cooking stoves 
> Subject: Re: [Stoves] Why build charcoal making stoves? Short answer! 
> 
> 
> 
> In the production of the charcoal sold at Wallmart, what happens to the syngas? 
> 
> Paul 
> 
> 
> 
> On Mon, May 13, 2013 at 4:39 AM, Lanny Henson <lannych at bellsouth.net> wrote: 
> 
> Why build charcoal making stoves? 
> 
> Short answer! 
> 
> 
> 
> Photo of bag of charcoal at Wallmart. 
> 
> 8.8 lb for $6.58 USD = 75 cents per pound. 
> 
> This is for charcoal that can be used for grilling. 
> 
> 
> 
> 
> _______________________________________________ 
> Stoves mailing list 
> 
> to Send a Message to the list, use the email address 
> stoves at lists.bioenergylists.org 
> 
> to UNSUBSCRIBE or Change your List Settings use the web page 
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org 
> 
> for more Biomass Cooking Stoves, News and Information see our web site: 
> http://stoves.bioenergylists.org/ 
> 
> 
> 
> 
> -- 
> Paul A. Olivier PhD 
> 26/5 Phu Dong Thien Vuong 
> Dalat 
> Vietnam 
> 
> Louisiana telephone: 1-337-447-4124 (rings Vietnam) 
> Mobile: 090-694-1573 (in Vietnam) 
> Skype address: Xpolivier 
> http://www.esrla.com/ 
> 
> 
> _______________________________________________ 
> Stoves mailing list 
> 
> to Send a Message to the list, use the email address 
> stoves at lists.bioenergylists.org 
> 
> to UNSUBSCRIBE or Change your List Settings use the web page 
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org 
> 
> for more Biomass Cooking Stoves, News and Information see our web site: 
> http://stoves.bioenergylists.org/ 
> 
> 



-- 
Paul A. Olivier PhD 
26/5 Phu Dong Thien Vuong 
Dalat 
Vietnam 

Louisiana telephone: 1-337-447-4124 (rings Vietnam) 
Mobile: 090-694-1573 (in Vietnam) 
Skype address: Xpolivier 
http://www.esrla.com/ 

_______________________________________________ 
Stoves mailing list 

to Send a Message to the list, use the email address 
stoves at lists.bioenergylists.org 

to UNSUBSCRIBE or Change your List Settings use the web page 
http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org 

for more Biomass Cooking Stoves, News and Information see our web site: 
http://stoves.bioenergylists.org/ 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20130513/f01e9c92/attachment.html>