中国炼油与石油化工 ›› 2014, Vol. 16 ›› Issue (01): 13-18.

• Scientific Research • 上一篇    下一篇

进料方式对固定流化床流态化行为影响的研究

任世宏,魏晓丽,毛安国   

  1. 石油化工科学研究院 
  • 收稿日期:2013-10-28 修回日期:2013-11-04 出版日期:2014-03-30 发布日期:2014-03-30
  • 通讯作者: 任世宏 E-mail:renshh.ripp@sinopec.com

THE INFLUENCE OF FEEDING METHOD ON FLUIDIZATION BEHAVIOR OF FIXED FLUIDIZED BED

Shi-Hong REN,Xiao-Li WEI,An-guo Mao   

  • Received:2013-10-28 Revised:2013-11-04 Online:2014-03-30 Published:2014-03-30
  • Contact: Shi-Hong REN E-mail:renshh.ripp@sinopec.com
  • About author:

摘要: 通过建立冷模实验装置,分别测定不同气速下,上进料和下进料反应器各段床层压降并拍摄固体颗粒流态化图像,对比上进料和下进料固定流化床的各段床层密度和操作气速以研究进料方式对流态化行为的影响。实验结果表明:上进料反应器具有床层密度随气速变化稳定、气速操作范围宽的优点。并提出现有下进料反应器的构型不能满足实验需求,需对反应器的构型进行优化。

关键词: 进料方式, 固定流化床, 流态化行为, 床层密度, 操作气速

Abstract: An experimental installation of cold model simulation was set up to study the bed pressure drop in different regions of fixed fluidized bed reactor during top feeding and bottom feeding, respectively, at various gas velocities with the fluidization image of solid particles monitored at the same time. By comparing the changes in bed density and operating gas velocity in different regions of fixed fluidized bed reactor, the influence of top feeding and bottom feeding patterns on fluidization behavior could be investigated. The results showed that the bed density in top feeding reactor responded more stably to the change in gas velocity along with the advantage of working in a wider range of operating gas velocities. Based on this study, it is concluded that existing bottom feeding reactor configurations cannot meet the fluidization requirements; and optimization of bottom feeding reactor will be needed.

Key words: feeding method, fixed fluidized bed, fluidization behavior, bed density, operating gas velocity