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化工学报  2015 

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, PP. 3036-3040

Keywords: 缩放,螺旋管,混合,效率

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Abstract:

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10.5mm,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。

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