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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>I’ll see what I can dig up. I did a project without a final baghouse and was amazed at how much the 1% loss of efficiency really amounted to! (it’s all super-fines). But getting the first 98-or-99% collected takes a huge load off the baghouse. A critical part of the cyclone is a long-ish downcomer that allow the material to accumulate and discharge with out disrupting the vortex dynamics. Learned by experience! Also, stacked Posiflate valves in lieu of a rotary airlock.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Best, Mark<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Henri Naths [mailto:c_hnaths@telusplanet.net] <br><b>Sent:</b> Saturday, August 27, 2011 7:05 AM<br><b>To:</b> mark@ludlow.com; Discussion of biomass pyrolysis and gasification<br><b>Subject:</b> Re: [Gasification] Charcoal Reduction Mill<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal><span class=apple-style-span><span style='font-size:13.5pt'>Then, a tall skinny, cyclone </span></span><br> <o:p></o:p></p></div><div><p class=MsoNormal>Hi mark<o:p></o:p></p></div><div><p class=MsoNormal>I was wondering if you or some one on the list has the math for the efficiency ratios for cyclones ie. Tall skinny vrs short fat cfm, volume? Particulates?<o:p></o:p></p></div><div><p class=MsoNormal>Thanks<o:p></o:p></p></div><div><p class=MsoNormal>Henri<br>Sent from my iPhone<o:p></o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'><br>On Aug 25, 2011, at 10:14 PM, "Mark E. Ludlow" <<a href="mailto:mark@ludlow.com">mark@ludlow.com</a>> wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>Then, a tall skinny, cyclone <o:p></o:p></p></blockquote></div></div></body></html>