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林产化学与工业 ›› 2007, Vol. 27 ›› Issue (3): 49-52.

• 研究报告 • 上一篇    下一篇

冷态鼓泡流化床中木屑流化速度的研究

刘宝亮, 蒋剑春, 岳金方, 蔡明远   

  1. 中国林业科学研究院 林产化学工业研究所;国家林业局 林产化学工程重点开放性实验室, 江苏 南京 210042
  • 收稿日期:2006-03-24 修回日期:1900-01-01 出版日期:2007-06-30 发布日期:2007-06-30
  • 通讯作者: 蒋剑春,研究员,博士生导师,从事林产化学加工领域的生物质热化学转化技术,活性炭制备和应用的基础研究及开发设计工作

Study on Fluidization Velocity of Sawdust in Cold Bubbling Fluidized Bed

LIU Bao-liang, JIANG Jian-chun, YUE Jin-fang, CAI Ming-yuan   

  1. Institute of Chemical Industry of Forestry Product, CAF;Key and Open Lab.on Forest Chemical Engineering, SFA, Nanjing 210042, China
  • Received:2006-03-24 Revised:1900-01-01 Online:2007-06-30 Published:2007-06-30

摘要: 冷态条件下,在鼓泡流化床中采用木屑为原料,分布板在2%~4%不同开孔率的条件下,分别考察了原料粒径和床层高度对木屑流化速度的影响.得出结论:分布板压降和流速成二次函数关系;以木屑为原料,分布板开孔率和床层高度对临界液化速度的影响不大,粒径分布对临界流化速度随粒径的增大而增加.

关键词: 木屑, 冷态, 鼓泡流化床, 流化速度

Abstract: Using sawdust as raw material, under the condition of 2%-4% opening rate of distributor, the effects of particle size and sawdust bed height on fluidization velocity in cold bubbling fluidized bed were determined. The results of this experiment showed that pressure drop and flow velocity are related in quadratic function; the effects of opening rate of distributor and bed height on critical fluidization velocity are rather slight,while the effect of particle size on critical fluidization velocity is very obvious.

Key words: sawdust, cold state, bubbling fluidized bed, fluidization velocity

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