欢迎访问过程工程学报, 今天是

›› 2010, Vol. 10 ›› Issue (1): 46-50.

• 流动与传递 • 上一篇    下一篇

稻草及热解半焦颗粒流化特性

朱金忠 陈雪莉 王辅臣   

  1. 华东理工大学煤气化教育部重点实验室 华东理工大学洁净煤技术研究所 华东理工大学洁净煤技术研究所
  • 收稿日期:2009-10-20 修回日期:2009-11-23 出版日期:2010-02-20 发布日期:2010-02-20
  • 通讯作者: 朱金忠

Fluidization Characteristics of Mixture of Straw and Semi-char Particles in a Fluidized Bed

ZHU Jin-zhong CHEN Xue-li WANG Fu-chen   

  1. Key Laboratory of Coal Gasification of Ministry of Education, East China University of Science and Technology Institute of Clean Coal Technology, East China University of Science＆Technology Institute of Clean Coal Technology, East China University of Science＆Technology
  • Received:2009-10-20 Revised:2009-11-23 Online:2010-02-20 Published:2010-02-20
  • Contact: ZHU Jin-zhong

PDF

被引次数

5

摘要： 研究了稻草及不同温度热解半焦颗粒在内径100 mm、高1000 mm的有机玻璃流化床中的流化特性. 结果表明，稻草颗粒无法单独流化，而其热解半焦颗粒可单独流化；半焦颗粒的最小流化速度随粒径增大而增大，与床层高度无关，筛分粒径为0.45~0.9, 0.18~0.45, 0.125~0.18 mm的半焦颗粒的最小流化速度分别为0.19, 0.16, 0.14 m/s；300~550℃温度范围内稻草热解半焦颗粒的流化特性无明显区别；半焦与稻草颗粒混合流化时，稻草颗粒不大于20%(w)时床层有较好的流化质量，混合颗粒的最小流化速度都随混合颗粒中稻草含量增大而增大.

关键词: 流化床, 稻草, 半焦, 流化特性

Abstract: Fluidization characteristics of straw and semi-char particles were investigated in a fluidized bed with I.D. of 100 mm and height of 1000 mm. The results show that straw particles can not be fluidized alone, but the semi-char particle fluidized well. The minimum fluidization velocities of semi-char particles increase with the particle size, but they are independent of the bed height, the minimum fluidization velocities of semi-char particles (with the sizes of 0.45~0.90, 0.18~0.45, 0.125~0.18 mm) are 0.19, 0.16, 0.14 m/s. The fluidization characteristics of semi-char particles at different temperatures (300~550℃) are similar. The fluidization characteristics of the mixture are well as long as the mass fraction of straw is less than 20%, but the minimum fluidization velocities of the mixture increase with the mass fraction of straw in the mixture.

Key words: fluidized bed, straw, semi-char, fluidization characteristics

中图分类号: