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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Tom
<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">The temperature in gasifier depends on a number of factors. One of the most important is the lambda value. Some of the Others are the water and
ash content.<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">The reactivity of the fuel (particle size) should be adjusted to the reactor principle and should largely be independent of the density of the
fuel – but can to a certain extent be influenced by the porosity.<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">The ratio between char and volatiles does have an influence on operation on a few very advanced staged gasification principles but for most gasifiers
one can not adjust lambda different in the different reaction zones.<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>
<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>
<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>
<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 [mailto:gasification-bounces@lists.bioenergylists.org]
<b>På vegne af </b>Tom Reed<br>
<b>Sendt:</b> 23. maj 2015 20:17<br>
<b>Til:</b> Discussion of biomass pyrolysis and gasification<br>
<b>Emne:</b> Re: [Gasification] Difference between Coal and biomass gasification<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Dear Thomas Koch and ALL:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thomas asks a very interesting question. Best answer would be for someone (me?) to get a batch of coal and try it. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">First, I would expect that it m i g h t burn up the gasifier. Coal burns so much hotter than wood. But I hope the stainless steel can stand it.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Secondly it would burn twice as long due to the high density of the coal and the high volatile content which could keep it from burning up.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I hope someone will try it and give a report. I'm on the road, but will try it when I get home if no one else does...<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">TOM REED<br>
<br>
Thomas B Reed<span class="apple-style-span"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span class="apple-style-span">280 Hardwick Rd</span><o:p></o:p></p>
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<p class="MsoNormal"><span class="apple-style-span">Barre, MA 01005</span><o:p></o:p></p>
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<p class="MsoNormal"><span class="apple-style-span">508 353 7841</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
On May 22, 2015, at 11:51 AM, Thomas Koch <<a href="mailto:tk@tke.dk">tk@tke.dk</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi Saiteja
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">That depends very much on which principle of gasifier you are using.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">If you use an entrained flow gasifier the only real difference is the pretreatment equipment.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Best regards</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thomas Koch</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<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 [<a href="mailto:gasification-bounces@lists.bioenergylists.org">mailto:gasification-bounces@lists.bioenergylists.org</a>]
<b>På vegne af </b>Saiteja Chinta<br>
<b>Sendt:</b> 22. maj 2015 20:28<br>
<b>Til:</b> <a href="mailto:Gasification@bioenergylists.org">Gasification@bioenergylists.org</a><br>
<b>Emne:</b> [Gasification] Difference between Coal and biomass gasification</span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
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<p>Hi,<o:p></o:p></p>
<p>I want to know what would be major design variations while designing for gasifiers which are coal fed from that of biomass.<o:p></o:p></p>
<p>Thanks<o:p></o:p></p>
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