[Terrapreta] 200 tons per day Dynamotive plant in Missouri

[Sean K. Barry]

Hi Tom,

I know the process can be "tilted" as you describe it.  What is DYNAMOTIVE'S plan?  They claim ... 

"Three products are produced: BioOil (60-75% by weight), char (15-20% wt.) and non-condensable gases (10-20% wt.). Yields vary depending on the feedstock composition. BioOil and char are commercial products and non-condensable gases are recycled and supply a major part of the energy required by the process. No waste is produced in the Dynamotive process."

So, they are turning back some of the energy content in those products back into the process.  They also do not mention external inputs of energy either.  I wonder what those are?  There is a product they have, too, called intermediate Bio-oil, which has the char added back into the oil to increase its BTU content.  The energy balances and energy fluxes in pyrolysis are quite complex and to be honest I really do not see yet how char can be made economically yet?

Regards,

SKB


----- Original Message ----- 
  From: Tom Miles<mailto:tmiles at trmiles.com> 
  To: 'Sean K. Barry'<mailto:sean.barry at juno.com> ; 'Gerald Van Koeverden'<mailto:vnkvrdn at yahoo.ca> 
  Cc: terrapreta at bioenergylists.org<mailto:terrapreta at bioenergylists.org> 
  Sent: Friday, December 07, 2007 11:48 AM
  Subject: RE: [Terrapreta] 200 tons per day Dynamotive plant in Missouri


  Sean,

   

  Another point to remember is that the process can be tilted.  You can "burn out" the char by converting more of it to oil or gas depending on the moisture in the fuel and the temperature of the reactor. In the absence of char markets most processes plan to use the char as fuel to generate heat for drying the fuel or for reheating the media  - sand, rocks, etc. - used to heat and pyrolyze the fuel. 

   

  Tom

   

   

  From: terrapreta-bounces at bioenergylists.org<mailto:terrapreta-bounces at bioenergylists.org> [mailto:terrapreta-bounces at bioenergylists.org] On Behalf Of Sean K. Barry
  Sent: Thursday, December 06, 2007 5:48 PM
  To: Gerald Van Koeverden
  Cc: terrapreta at bioenergylists.org
  Subject: Re: [Terrapreta] 200 tons per day Dynamotive plant in Missouri

   

  Hi Gerrit,

   

  Well that's impressive.  I did not think "fast-pyrolysis" was capable of such a high yield in charcoal.  My reading on this has lead me to believe that it produced large gas and liquid fractions, but little or no charcoal.  Apparently that is wrong?

   

  Regards,

   

  SKB

    ----- Original Message ----- 

    From: Gerald Van Koeverden<mailto:vnkvrdn at yahoo.ca> 

    To: Sean K. Barry<mailto:sean.barry at juno.com> 

    Cc: terrapreta at bioenergylists.org<mailto:terrapreta at bioenergylists.org> ; Shengar at aol.com<mailto:Shengar at aol.com> 

    Sent: Thursday, December 06, 2007 5:02 PM

    Subject: Re: [Terrapreta] 200 tons per day Dynamotive plant in Missouri

     

    Here at Dynamotive's plant in West Lorne, they get about 18% yield of char. 

     

    On 6-Dec-07, at 12:45 PM, Sean K. Barry wrote:





     
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