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nkforster
 Post subject: torrefication protocol?
PostPosted: Thu Jul 02, 2015 7:10 am 
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Cocobolo
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Location: North East England
First name: nigel
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There seems to be plenty of interest in torrefication just now. I've got access to a company who have the required equipment, but trying to find out specifics is proving difficult. Their experience is in a different field of torrefication.

Anyone got any ideas about the details of the process? The times and temperatures involved for processing spruces? Could save ruining a lot of good spruce!

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printer2
PostPosted: Thu Jul 02, 2015 7:46 am 
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Best to practice on some bad spruce. ;)
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kencierp
PostPosted: Thu Jul 02, 2015 8:43 am 
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You need to get a "Professor Peabody --Way Back machine" like Martin's!

John Greven did mentioned to me that he thought the Martin procedure used lower temperatures and longer cook times than the others.

You might get a feel for the temp and time looking through the Yamaha websites and advertisements they have been doing this for a couple of decades.

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Bryan Bear
PostPosted: Thu Jul 02, 2015 8:54 am 
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I doubt any of the entities doing this are gong to just tell you the details of their procedure. You will have to experiment and arrive at what you want with trial and error. To me this seems like quite a challenge since no one seems to be able to say what the end result should look/feel like.

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These users thanked the author Bryan Bear for the post: Hesh (Thu Jul 02, 2015 12:34 pm)
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kencierp
PostPosted: Thu Jul 02, 2015 8:59 am 
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http://www.yamaha.com/about_yamaha/research/are/

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J De Rocher
PostPosted: Thu Jul 02, 2015 12:33 pm 
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May be some relevant info in this patent issued to Yamaha titled "Method for manufacturing modified wood":

http://www.google.com/patents/US6667429

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These users thanked the author J De Rocher for the post (total 2): Bryan Bear (Thu Jul 02, 2015 1:12 pm) • kencierp (Thu Jul 02, 2015 12:52 pm)
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kencierp
PostPosted: Thu Jul 02, 2015 12:53 pm 
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Good thinking Jay! Lots of info on that document.

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DanSavage
PostPosted: Thu Jul 02, 2015 5:22 pm 
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More food for thought on torrefaction:

CHEMICAL CHANGES IN FIR WOOD FROM OLD BUILDINGS DUE TO AGING
http://www.cellulosechemtechnol.ro/pdf/ ... .79-88.pdf

Characteristics of aged wood and Japanese traditional coating technology for wood protection
http://www.citedelamusique.fr/pdf/insti ... nglais.pdf

Wood science for conservation of cultural heritage – Florence 2007
www.oapen.org/download?type=document&docid=343706
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