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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Dear Prasad
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thank you for a very clear pinpointing of the fundamental problem of “inventory bed” gasification technology.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">If you have tars you have problems that are almost impossible to handle with in the economy a gasifier can expext to operate with in.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">If you reduce the temperature you get more tars and a high char loss.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">If you raise the temperature the tar problem reduces you reduce the char loss and increase the loss as latent heat in the gas - and you get klinker.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Staged gasification – Viking – Double feuer – NOTAR – TKE – Wamsler and a number other designs have managed to reduce the tar content in the gas
considerably – for some close to zero – but they are all facing high temperature engineering challenges and none have proven real reliably operation for many thousand hours.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">The challenges of all these constructions are the complex design and therefor the cost – both for building and operation.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Best regards<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thomas
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Fra:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> gasification-bounces@lists.bioenergylists.org [mailto:gasification-bounces@lists.bioenergylists.org]
<b>På vegne af </b>Prasad Mande<br>
<b>Sendt:</b> 24. juli 2012 08:42<br>
<b>Til:</b> Discussion of biomass pyrolysis and gasification; tombreed2010@gmail.com<br>
<b>Emne:</b> Re: [Gasification] Need help from gasifier experts_Clinker formation<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Dear gasifier experts,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">I was working on the biomass pellet trial on one of the wood chip gasifier (Gasifier design is IISc India design- Open top downndraft). I found that gasifier
was able to make good quality gas when switched from wood chips to these biomass pellets. However, two major problems I came across are TAR and Clinkers. Clinkers are primarily due to the temperature in the reactor bed which is exceeding probably ash fusion
temperatures for the biomass pellets I used. I want to know from you the ways to control this reactor bed temperature inside gasifier, such that I can avoid clinker formation and also reduce the temperature<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Waiting for the guidance from experts. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">
<a href="mailto:gasification-bounces@lists.bioenergylists.org">gasification-bounces@lists.bioenergylists.org</a>
<a href="mailto:[mailto:gasification-bounces@lists.bioenergylists.org]">[mailto:gasification-bounces@lists.bioenergylists.org]</a>
<b>On Behalf Of </b>A.Saravanakumar<br>
<b>Sent:</b> Tuesday, July 24, 2012 11:00 AM<br>
<b>To:</b> <a href="mailto:tombreed2010@gmail.com">tombreed2010@gmail.com</a>; <a href="mailto:gasification@lists.bioenergylists.org">
gasification@lists.bioenergylists.org</a><br>
<b>Subject:</b> Re: [Gasification] Flaming pyrolysis modelling for truncated updraft gasifier<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;line-height:14.4pt">
<b><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#002060">Dear Booster,</span></b><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;line-height:14.4pt;outline: none">
<span lang="EN-US" style="font-family:"Arial","sans-serif";color:#002060"> </span><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;line-height:14.4pt;outline: none">
<span lang="EN-US" style="font-family:"Arial","sans-serif";color:#002060">Warm Greetings,</span><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;line-height:14.4pt;outline: none">
<span lang="EN-US" style="font-family:"Arial","sans-serif";color:#002060"><br>
You are my GAS GURU and inspiration to us.</span><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;line-height:14.4pt;outline: none">
<span lang="EN-US" style="font-family:"Arial","sans-serif";color:#002060"> </span><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;line-height:14.4pt;outline: none">
<span lang="EN-US" style="font-family:"Arial","sans-serif";color:#002060;background:white">I pray for your early recovery from the fall.</span><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;line-height:14.4pt;outline: none">
<span lang="EN-US" style="font-family:"Arial","sans-serif";color:#002060"> </span><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;line-height:14.4pt;outline: none">
<span lang="EN-US" style="font-family:"Arial","sans-serif";color:#002060">I kindly request you to see through the paper and make necessary corrections in this paper in the aspect of Elsevier publications.</span><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;line-height:14.4pt;outline: none">
<span lang="EN-US" style="font-family:"Arial","sans-serif";color:#002060"> </span><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;line-height:14.4pt;outline: none">
<span lang="EN-US" style="font-size:13.5pt;font-family:"Arial","sans-serif";color:#000099;background:white">Please check the manuscript for grammatical errors and instances of badly worded/constructed sentences and refine the language carefully.</span><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;line-height:14.4pt;outline: none">
<span lang="EN-US" style="font-family:"Arial","sans-serif";color:#002060"> </span><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;line-height:14.4pt;outline: none">
<span lang="EN-US" style="font-family:"Arial","sans-serif";color:#002060">I kindly request you to correct the paper, which I have sent for your kind perusal.</span><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;line-height:14.4pt;outline: none">
<span lang="EN-US" style="font-family:"Arial","sans-serif";color:#002060"> </span><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;line-height:14.4pt;outline: none">
<span lang="EN-US" style="font-family:"Arial","sans-serif";color:#002060">Thanking you</span><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;line-height:14.4pt;outline: none">
<span lang="EN-US" style="font-family:"Arial","sans-serif";color:#002060"> </span><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;line-height:14.4pt;outline: none">
<span lang="EN-US" style="font-family:"Arial","sans-serif";color:#002060">Yours faithfully</span><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;line-height:14.4pt;outline: none">
<span lang="EN-US" style="font-family:"Arial","sans-serif";color:#002060"> </span><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;line-height:14.4pt;outline: none">
<span lang="EN-US" style="font-family:"Arial","sans-serif";color:#002060">A. Saravanakumar</span><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;line-height:14.4pt;outline: none">
<span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;mso-line-height-alt:11.25pt;outline: none">
<b><span lang="EN-US" style="font-size:13.5pt;font-family:"Arial","sans-serif";color:#002060">On Sat, 21 Jul 2012 01:51:39 +0530 Tombreed wrote:</span></b><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;mso-line-height-alt:11.25pt;outline: none">
<b><span lang="EN-US" style="font-size:13.5pt;font-family:"Arial","sans-serif";color:#002060">> Dear Sara</span></b><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;mso-line-height-alt:11.25pt;outline: none">
<b><span lang="EN-US" style="font-size:13.5pt;font-family:"Arial","sans-serif";color:#002060">The paper was not attached...</span></b><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;mso-line-height-alt:11.25pt;outline: none">
<b><span lang="EN-US" style="font-size:13.5pt;font-family:"Arial","sans-serif";color:#002060">Tom Reed</span></b><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="yiv702071305msonormal" style="margin:0cm;margin-bottom:.0001pt;mso-line-height-alt:11.25pt;outline: none">
<b><span lang="EN-US" style="font-size:13.5pt;font-family:"Arial","sans-serif";color:#002060">Thomas B Reed</span></b><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p></o:p></span></p>
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