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Fluidisation is a phenomenon whereby solid particulate is placed under certain conditions to cause it to behave like a fluid. A fluidized bed is a system conceived to facilitate the fluidisation. Fluidized beds have a wide range of applications including but not limited to: assisting with chemical reactions, heat transfer, mixing and drying. A recent concept devised and patented by Outotec, '' "An annular fluidized bed consists of a large central nozzle surrounded be a stationary fluidized" .''〔A. Collin, K.-E. Wirth, M. Stroeder, Characterization of an annular fluidized bed, Powder Technology, Volume 190, Issues 1–2, 5 March 2009, Pages 31-35, ISSN 0032-5910.〕 == History == * Fritz Winkler created the first fluidised bed in 1922 for coal gasification. * The next advancement in fludizied bed was the Circulating fluidised bed produced in 1942 for catalytic cracking of organic oils. * Finally in the early 1990s annular fluidised beds was conceptualised and its current uses are:〔Outotec Fluidization technology 2011, viewed 13 October 2013, www.outotec.com〕 : * Waste heat boiler pilot plant (1992) : * Circored direct reduction plant (1996) : * Ore preheater, Australia (2002) : * Reducing ilmenite roaster, Mozambique (2005) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Annular fluidized bed」の詳細全文を読む スポンサード リンク
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