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Hi Masseurs Miles, Piggot,<br><br> Please note the question a stover asked a few weeks ago was about Jatropha seed PRESS-CAKE, which may be very different than whole seeds.<br><br> I described a fluidized-bed cherry pit combustor a few years ago on the gasification forum:<br>Cherry pits circulate like boiling water when a bed is fluidized by a degree of higher velocity air from beneath the bed.<br>The same effect is seen either when the pits are cold, or at pyrolizing temperature.<br>There seems to be a certain critical velocity where the pits begin to circulate.<br><br> Someday I shall work out correct free-board, and amount of over-fire air, to prevent the hideous black smoke that issues from the gasifier maw.<br>To sustain reaction for hours, cherry pits roll into the maw; similar to Dr Reed's cool animation on The BEF website:<br><br>http://www.woodgas.com/gasification.htm<br><br>Click the animation start button and watch those pits GO (in a down draft gasifier)... I am entertained easily with simple things...<br><br>Pits happily act like ball-bearings in a feed system. <br>To utilize a paste-like mass left over from mechanical seed-oil extraction, an extrusion of the waste paste could be metered into the maw for co-combustion with pits.<br>Most places in the world do not have cherry pits. So a special refractory "grog" could be heated, and circulated to burn gooey pastes alone.<br><br>Please wear eye protection when gasifying stuff,<br><br>Andrew Schofield<br>Renewable Fuel Systems<br><br><br><br><br><br><br> </body>
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