[Terrapreta] Niels Bech's flash pyrolysis

[Sean K. Barry]

Hi Tom,

Why did they fail?  Was there ever any attempt to process straw, not into pyrolysis oil, but rather only into biochar?

SKB
  ----- Original Message ----- 
  From: Tom Miles<mailto:tmiles at trmiles.com> 
  To: 'terra preta'<mailto:terrapreta at bioenergylists.org> 
  Sent: Monday, August 13, 2007 12:05 PM
  Subject: Re: [Terrapreta] Niels Bech's flash pyrolysis


  Doug, 

  Thanks for the link. Niels Bech is apparently a Phd student in the CHEC
  group under Kim Dam-Johansen at the Danish Technological University. This is
  an excellent research team that has worked on the pyrolysis and combustion
  of straws and other biomass for many years.    

  This is a flash pyrolysis process for producing oil with a char byproduct
  similar to those of Dynamotive and Ensyn in Canada. If you scale up the
  process it will be a fixed plant that will look very much like those offered
  by these commercial groups.

  We'll follow up on their research.

  All attempts at mobile or portable (at field side) processing of straws that
  I have known of for the last 36 years into any form have failed. 

  Tom
    
   
  > -----Original Message-----
  > From: terrapreta-bounces at bioenergylists.org<mailto:terrapreta-bounces at bioenergylists.org> [mailto:terrapreta-
  > bounces at bioenergylists.org<mailto:bounces at bioenergylists.org>] On Behalf Of Robert Klein
  > Sent: Sunday, August 12, 2007 7:59 PM
  > To: Douglas Clayton
  > Cc: terra preta
  > Subject: Re: [Terrapreta] Niels Bech's flash pyrolysis
  > 
  > 
  > A nice setup, but i am not sure this can add much.
  > Grinding fuel in a low volume environment is great for
  > running experiments, but not so great for industrial
  > scale were we would immediately switch to coal.
  > 
  > I would love to see a literature review article that
  > organizes the known and puts it behind us.  Huge
  > amount of work went into this in second world war
  > germany and was briefly revived during the first
  > energy crisis.
  > 
  > We have to appeciate that terra preta carbon was
  > largely produced at a fairly low temperature, and any
  > system we now use will have to burn the volatiles in
  > order to make the same low temperature char.  As
  > desribed in my posts on incinerator modification.
  > 
  > Any other scheme will be rube goldberg mess.
  > 
  > 
  > 
  > --- Douglas Clayton <dnclayton at wildblue.net<mailto:dnclayton at wildblue.net>> wrote:
  > 
  > > Sorry that link didn't work as intended.  The google
  > > search does bring
  > > it right up.
  > >
  > > Doug
  > >
  > >
  > > On Aug 12, 2007, at 11:17 AM, Douglas Clayton wrote:
  > >
  > > >
  > > > A friend just suggested I google  Niels Bech flash
  > > pyrolysis.  I
  > > > suggest you all do the same.  I have not been able
  > > to keep up with
  > > > posts to the tp list but do not believe Niels Bech
  > > has been mentioned:
  > > >
  > > > http://www.chec.kt.dtu.dk/Research/<http://www.chec.kt.dtu.dk/Research/>
  > > >
  > >
  > Experimental%20Facilities%20within%20CHEC/Flash%20Pyrolysis.aspx
  > > >


  > > Douglas Clayton


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