传统SK型与新型静态混合器的结构优化

现代纺织技术 ›› 2023, Vol. 31 ›› Issue (3): 1-11.

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传统SK型与新型静态混合器的结构优化

南京工业大学机械与动力工程学院，南京211816

收稿日期:2022-08-04 出版日期:2023-05-10 网络出版日期:2023-05-25
作者简介:陈西锋(1995—)，男，安徽阜阳人，硕士研究生，主要从事流体仿真方面的研究。
基金资助:
中石化安庆分公司技术开发(委托)项目(32000000-21-ZC0607-0006)

Structure optimization of traditional SK type and new static mixers

School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing 211816, China

Received:2022-08-04 Published:2023-05-10 Online:2023-05-25

摘要/Abstract

摘要： 为了提高聚丙烯腈纤维的合成质量，从提高合成聚丙烯腈的三股物料混合均匀度出发，利用CFD技术进行多相流流场的数值计算方法，探讨SK型静态混合器的元件结构参数及元件数量对混合器管内三股物料预混均匀度的影响，并分析相应的压力降变化等。结果显示当混合元件的宽度D=110 mm、长宽比L/D=1、元件扭转角α=270°时混合效率最高。以优化后的混合元件参数为基础设计一种新型静态混合器并对其进行数值模拟，以达到理想混合均匀度为目的，满足要求时的新型混合器的总长度约为传统SK型静态混合器长度的1/2。新型静态混合器的混合效率比传统SK型静态混合器约提高了50%，但压力降损失也较大。

关键词:

, 静态混合器, 聚丙烯腈纤维, 混合均匀度, CFD技术, 多相流

Abstract: In order to improve the synthetic quality of polyacrylonitrile fibers, starting from improving the mixing uniformity of the three-strand material of synthetic polyacrylonitrile, the numerical calculation method of multiphase flow field is carried out by using CFD technology, the influence of component structure parameters and component quantity of SK type static mixer on the uniformity of the three-strand material premix in the mixer tube is discussed, and the corresponding pressure drop changes are analyzed. The results show that when the width of the mixing element is D=110 mm, the aspect ratio is L/D=1, and the component torsional angle is α=270°, the mixing efficiency is the highest. And the new static mixer is numerically simulated based on the optimized mixing element parameters, with the purpose of achieving ideal mixing uniformity, and the total length of the new mixer when meeting the requirements is about 1/2 of the length of the traditional SK static mixer. The mixing efficiency of the new static mixer is greatly improved compared to that of the traditional SK static mixer, but the pressure drop loss is also large.

Key words: static mixer, polyacrylonitrile fibre, mixing uniformity, CFD technology, multiphase flow

中图分类号:

陈西锋, 陈晔. 传统SK型与新型静态混合器的结构优化[J]. 现代纺织技术, 2023, 31(3): 1-11.

CHEN Xifeng, CHEN Ye. Structure optimization of traditional SK type and new static mixers[J]. Advanced Textile Technology, 2023, 31(3): 1-11.

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传统SK型与新型静态混合器的结构优化

Structure optimization of traditional SK type and new static mixers

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