中国科学院大连化学物理研究所机构知识库
Advanced  
DICP OpenIR  > 中国科学院大连化学物理研究所  > 会议论文
学科主题: 物理化学
题名: Gas-liquid Flow in a Multi-Channel Microreactor with Multi-Scale Constructal Distributors.
作者: Le J(乐军) ;  Chen GW(陈光文) ;  Yuan Q(袁权) ;  Luo LA(罗灵爱) ;  GonthierY.
会议名称: 8TH WORLD CONGRESS OF CHEMICAL ENGINEERING
会议日期: 2009-8-23
出版日期: 2009-08-23
会议地点: 加拿大
其他题名: 具有多尺度构造分布器的多通道微反应器中的气-液流动
通讯作者: 陈光文
部门归属: 九室
主办者: École Polytechnique de Montréal
摘要: Abstract: Gas-liquid microreaction technology presents a typical means of process intensification in multiphase reactors, which has shown great potential in many gas-liquid reactions of industrial importance. The product capacity of gas-liquid microreactor is realized by performing gas-liquid contacting in a multitude of microchannels. During this numbering- up process, one important issue is to design proper fluid distributors in order to ensure two- phase flow equi-partition among parallel microchannels. In this article, the idea of integrating two multi-scale constructal distributors into a 16-channel gas-liquid microreactor to solve the problem of two-phase flow maldistribution is presented. CO2-water two-phase flow pattern in parallel microchannels of the present microreactor has been visualized. A large two-phase flow maldistribution was observed at comparatively low superficial gas velocities where the uniform flow pattern was slug flow, which was characterized by the presence of liquid alone flow in many microchannels. Nevertheless, an improvement in two-phase flow uniformity was found at increased superficial gas velocities and most microchannels were occupied by slug-annular flow at much high superficial gas velocities. A further fluid dynamic analysis has demonstrated that the lack of large pressure barrier in two constructal distributors was the main cause responsible for the observed two-phase flow maldistribution at small superficial gas velocities. Under these circumstances, pressure fluctuations accompanied slug flow would greatly disturb an otherwise nearly uniform flow distribution inside each constructal distributor. However, at comparatively high superficial gas velocities, the uniform flow pattern turned to be slug-annular flow and the flow in each distributor was hardly affected by two-phase flow in the subsequent microchannels. Thus the tree architectures of both distributors could guarantee a nearly uniform two-phase flow distribution, as our CFD simulation correctly reflected. Finally, further improvement of the present microreactor design was discussed.
语种: 中文
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/113802
Appears in Collections:中国科学院大连化学物理研究所_会议论文

Files in This Item:

There are no files associated with this item.


Recommended Citation:
Le J,Chen GW,Yuan Q,et al. Gas-liquid Flow in a Multi-Channel Microreactor with Multi-Scale Constructal Distributors.[C]. 见:8TH WORLD CONGRESS OF CHEMICAL ENGINEERING. 加拿大. 2009-8-23.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [乐军]'s Articles
 [陈光文]'s Articles
 [袁权]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [乐军]‘s Articles
 [陈光文]‘s Articles
 [袁权]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace