化工进展 ›› 2018, Vol. 37 ›› Issue (03): 920-927.DOI: 10.16085/j.issn.1000-6613.2017-1589

• 化工过程与装备 • 上一篇    下一篇

自吸式文丘里洗涤器引射特性实验研究

赵祥迪1, 徐银谋1,2, 王正1, 孙万付1, 袁纪武1, 杨帅1   

  1. 1 中国石油化工股份有限公司青岛安全工程研究院, 化学品安全控制国家重点实验室, 山东 青岛, 266071;
    2 青岛科技大学机电工程学院, 山东 青岛 266061
  • 收稿日期:2017-07-31 修回日期:2017-10-13 出版日期:2018-03-05 发布日期:2018-03-05
  • 通讯作者: 孙万付,博士,教授,主要从事化工安全、装备研制等方面研究。
  • 作者简介:赵祥迪(1983-),男,硕士,高级工程师,主要从事化事故应急装备研究开发等方面研究。
  • 基金资助:
    国家科技支撑计划项目(2015BAK37B03)。

Experimental investigation on the injection performance in Venturi scrubber working in self-priming mode

ZHAO Xiangdi1, XU Yinmou1,2, WANG Zheng1, SUN Wanfu1, YUAN Jiwu1, YANG Shuai1   

  1. 1 SINOPEC Research Institute of Safety Engineering, State Key Laboratory of Safety and Control for Chemicals, Qingdao 266071, Shandong, China,;
    2 College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, Shandong, China
  • Received:2017-07-31 Revised:2017-10-13 Online:2018-03-05 Published:2018-03-05

摘要: 为了优化自吸式文丘里洗涤器引射特性、改善气液分散效果,本文采用空气-水为工作介质,通过改变操作气速、液面高度及引入导流挡板等方式研究自吸式文丘里洗涤器引射特性变化规律。实验结果表明,自吸式文丘里洗涤器引射量、分散特征主要取决于喉部气相静压差、液面提升高度等操作因素以及导流挡板等文丘里管结构因素。喉部气相静压需大于洗消液液面提升所需压力才能实现对液相的引射功能,不引射流体时,喉部负压接近纯气相流动,一旦开始引射流体,喉管处有效吸液压差明显降低,引射量大小与文丘里环隙通道液体两侧静压差线性相关。增加导流挡板后文丘里出口处气液分散效果增强,平均雾滴粒径降低,相同能耗下引射量降低,约为无挡板时的15%。

关键词: 自吸式文丘里, 引射特征, 液相分散, 导流挡板

Abstract: The present investigation was focused on the injection behavior and liquid jet atomization of self-priming Venturi scrubber. The influence of liquid flow rate and jet atomization variation with average gas velocity,liquid filling levels were experimentally evaluated for different baffle configurations. Injection flow rate of self-priming Venturi depended mainly on operation factors of static pressure differential,height difference and structure factor. In order to injecting liquid,static pressure at throat should be higher than static pressure of liquid height difference. The static pressure differential at throat was close to the pure gas phase flow in case of none liquid injection,on the contrary reduced significantly. The injection flow rate was linearly related to the static pressure differential on both sides of suction annular port. In general,baffle in the scrubber favored the jet atomization process by reducing the size of the droplets and inhibited the injection behavior by the decrease of the injection flow rate,about 15% of unbaffled scrubber,with the constant energy consumption.

Key words: self-priming Venturi, injection flow rate, liquid atomization, baffle

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