<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">I use the word gasification when talking about the gases produced and the word pyrolysis when referring to the production of biochar and the change to the biomass. I’m thinking the air introduced during TLUD is only for the purpose of increasing the temperature and not part of the definition. Could use outside heat to increase the temperature if available. And the secondary doesn’t count as that is just making use of the gases produced. <div class=""><br class=""></div><div class="">So the TLUD is talked about both producing gases to cook and biomass changing to biochar. </div><div class=""><br class=""></div><div class="">Crispin had a definition list some time back that I wish I had saved from my move out of the lab.</div><div class=""><br class=""></div><div class="">Frank</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""><div apple-content-edited="true" class="">
Frank Shields<br class=""><a href="mailto:franke@cruzio.com" class="">franke@cruzio.com</a><br class=""><br class="">
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<br class=""><div><blockquote type="cite" class=""><div class="">On May 16, 2015, at 3:50 PM, Dean Still <<a href="mailto:deankstill@gmail.com" class="">deankstill@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><ol style="margin:0px;padding:0px;border:0px;font-size:13px;line-height:15.6000003814697px" class=""><li class="" style="margin:0px;padding:20px 20px 0px;border:0px;list-style:none;clear:none;line-height:1.24"><div class="" style="overflow:hidden;padding-bottom:20px">Hi All,</div></li></ol><div class=""><span style="line-height:16.1200008392334px" class="">When I look up the word pyrolysis I find the following:</span></div><ol style="margin:0px;padding:0px;border:0px;font-size:13px;line-height:15.6000003814697px" class=""><li class="" style="margin:0px;padding:20px 20px 0px;border:0px;list-style:none;clear:none;line-height:1.24"><div class="" style="overflow:hidden;padding-bottom:20px"><b style="font-size:16px;line-height:1.24" class="">Pyrolysis</b><span style="font-size:16px;line-height:1.24" class=""> </span><span style="font-size:16px;line-height:1.24" class="">is a thermochemical decomposition of organic material at elevated temperatures in the absence of oxygen (or any halogen). It involves the simultaneous change of chemical composition and physical phase, and is irreversible. The word is coined from the Greek-derived elements pyro "fire" and lysis "separating".</span></div></li><li class="" style="margin:0px;padding:20px 20px 0px;border:0px;list-style:none;clear:none;line-height:1.24"><div class="" style="overflow:hidden;padding-bottom:20px"><span style="font-size:16px;line-height:1.24" class="">However, I think that folks use it to describe what happens in a TLUD, etc? Isn't that gasification not pyrolysis because of the presence of some air?</span></div></li></ol><div class=""><span style="font-size:16px;line-height:19.8400001525879px" class="">Best,</span></div><div class=""><span style="font-size:16px;line-height:19.8400001525879px" class=""><br class=""></span></div><div class=""><span style="font-size:16px;line-height:19.8400001525879px" class="">Dean</span></div></div>
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