缩放螺旋混合器的实验评价与优化设计

doi:10.11949/j.issn.0438-1157.20150838

化工学报 ›› 2015, Vol. 66 ›› Issue (8): 3036-3040.DOI: 10.11949/j.issn.0438-1157.20150838

• 催化、动力学与反应器 • 上一篇下一篇

缩放螺旋混合器的实验评价与优化设计

梁栋^1,2, 张淑芬¹

1 大连理工大学精细化工国家重点实验室, 辽宁大连 116024;
2 苏州世名科技股份有限公司, 江苏昆山 215337

收稿日期:2015-06-05 修回日期:2015-06-18 出版日期:2015-08-05 发布日期:2015-08-05
通讯作者: 张淑芬
基金资助:
国家科技支撑计划项目(2011BAE07B01)。

Experimental investigation and optimization of helical mixer with contraction-expansion structures

LIANG Dong^1,2, ZHANG Shufen¹

1 State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, Liaoning, China;
2 Suzhou Sunmun Technology Corporation Limited, Kunshan 215337, Jiangsu, China

Received:2015-06-05 Revised:2015-06-18 Online:2015-08-05 Published:2015-08-05
Supported by:
supported by the National Key Technology Research and Development Program of the Ministry of Science and Technology of China (2011BAE07B01).

摘要/Abstract

摘要：

为了增强普通螺旋管的混合效率,在普通的螺旋管结构中引入突放突缩结构,设计制造出缩放螺旋混合器。以竞争串连反应的离集指数为指标,对缩放螺旋混合器的结构进行了优化设计,考察了缩放螺旋混合器的几何参数——混合单元数、粗细段长度比、螺距、曲率半径以及Reynolds数对混合器的混合效率的影响。结果表明:缩放螺旋混合器的粗细段长度比为1/4,曲率半径为10.5 mm,混合单元数为40,Reynolds数在1000～1575时混合效率最佳;参数优化后的缩放螺旋混合器比普通螺旋管混合器以及具有缩放结构的直管混合器中的混合效率更高。

关键词: 缩放, 螺旋管, 混合, 效率

Abstract:

A helical mixer with contraction-expansion connections combines helical pipes and sudden expansion and contraction array, which was optimally designed in this paper for enhancing the mixing in the regular helical mixer. The effect of the number of mixed elements, the pitch and curvature, the ratio of the lengths of contraction part to expansion part and Reynolds number on the mixing efficiency of the contraction-expansion helical mixer, was experimentally investigated by use of a fast competitive-consecutive diazo coupling reaction. It is found that: the radius of curvature of the helical mixer, ratio of the lengths of the contraction part to expansion part and the Reynolds number affect significantly the mixing efficiency, while the pitch of helical mixer had little influence. The best mixing performance is achieved by the contraction-expansion helical mixer with the radius of the curvature R 10.5 mm, the ratio of the lengths of contraction part to expansion part 4:1, the numbers of mixed elements 40 in the ranges of Reynolds number from 1000 to 1575. The mixing efficiency of the optimized contraction-expansion helical mixer is superior in comparison to both of the regular helical mixer and contraction-expansion straight mixer.

Key words: contraction-expansion, helical pipe, mixing, efficiency

中图分类号:

TQ051.7⁺1

梁栋, 张淑芬. 缩放螺旋混合器的实验评价与优化设计[J]. 化工学报, 2015, 66(8): 3036-3040.

LIANG Dong, ZHANG Shufen. Experimental investigation and optimization of helical mixer with contraction-expansion structures[J]. CIESC Journal, 2015, 66(8): 3036-3040.

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缩放螺旋混合器的实验评价与优化设计

Experimental investigation and optimization of helical mixer with contraction-expansion structures

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