梯形孔垂直筛板塔板上持液量不均匀分布性的研究

摘要

采用空气-水系统,在1 500 mm×400 mm的矩形塔内,对4种不同角度的梯形孔垂直筛板(TH-VST)和1种具有相同结构参数的矩形孔垂直筛板(RH-VST)的持液量分布进行了实验研究。结果表明:TH-VST清液层高度的不均匀分布程度(参差度)比RH-VST塔板有明显改善。参差度随着梯形顶角θ(两斜边延长线夹角)的增大先减小后增大,随着液体流量的增大而增大,随气速的增加先减小后增大。根据实验结果得到了具有良好导流性能的梯形顶角θ的范围,同时给出了参差度的关联式,为工程设计提供了初步的依据。

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	何杰
	杨麦军
	张燕
	丁浩
	王昕
	高腾飞
	韩少强

关键词：梯形孔垂直筛板塔清液层高度参差度持液量导流性能

Abstract：

The liquid holdup distributions of four kinds of TH-VST with different angles and one kind of RH-VST with the same structure parameters are experimentally studied with the air-water system in the 1 500 mm×400 mm quadrate column. The experimental results show that the non-uniform degree of the TH-VST have better performance than that of RH-VST. At the same condition the non-uniform degree decreased and then increased with the increase of the angle of Trapezoidal hole and F_o-factor. It increased with the liquid weir load. Based on the experimental data, the angle range of Trapezoidal hole which have good flow distribution performance was determined. The correlative equation was obtained for the non-uniform degree, the result can be applied in the engineering design.

Keywords： TH-VST； clear liquid height； non-uniform degree； liquid holdup； flow distribution performance

Received 2014-03-14;

Corresponding Authors: 杨麦军,E-mail:yangmaijun@126.com。 Email: yangmaijun@126.com

About author: 何杰(1962-),男,副研究员,主要从事化工传质与分离研究。

引用本文:

何杰, 杨麦军, 张燕, 丁浩, 王昕, 高腾飞, 韩少强.梯形孔垂直筛板塔板上持液量不均匀分布性的研究[J]. 化学工业与工程, 2016,33(2): 52-57

He Jie, Yang Maijun, Zhang Yan, Ding Hao, Wang Xin, Gao Tengfei, Han Shaoqiang.Study on Non-Uniform Distribution of Liquid Holdup on TH-VST[J]. Chemcial Industry and Engineering, 2016,33(2): 52-57

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