Design and Research on online Monitoring of Liquid Flooding in Distillation Towers

DOI: https://doi.org/10.62517/jes.202302211

Author(s)

Wang Guojun1,2, Xu An1,2, Wu Zhenfei1,2, Lin Haibo2,3,*, Wang Jinbao3, He Caifu1,2

Affiliation(s)

1Zhejiang Chengxin Medical and Chemical Equipment Co., Ltd. Taizhou 318000, Zhejiang 2Institute of Process Control and Equipment Provincial Enterprise ,Zhejiang Chengxin Medical and Chemical Equipment Co., Ltd. Taizhou 318000, Zhejiang 3Department of Mechanical and Electrical Engineering, Zhejiang Taizhou Vocational and Technical College, Taizhou, Zhejiang 318000, China;

Abstract

The phenomenon of liquid flooding, as a special flow state in gas-liquid countercurrent processes, can cause adverse effects such as reduced production efficiency and increased energy consumption, seriously restricting the operation and design of gas-liquid mass transfer equipment. Real time monitoring of the operation status of the packed tower not only ensures its normal operating conditions, but also helps to improve equipment efficiency, which has important practical significance and industrial application prospects. This article first reviews the current research status of liquid flooding monitoring, and proposes to use the key variable of tower pressure difference as an important variable for liquid flooding monitoring to monitor and regulate the pressure difference inside the tower. The effectiveness and superiority of monitoring have been verified through experiments, which can achieve indirect monitoring of liquid flooding.

Keywords

Pressure Difference; Flooding; Online Monitoring; Distillation Tower

References

[1] Li Xiaoxi, Li Zhiguo, Zhou Guangqi, et al. Discussion and Example Analysis of Typical Problems in Distillation Tower Operation [J]. Modern Salt Chemical Industry, 2016, Volume 43 (Issue 2): 35-38 [2] Li Xiao. Cause analysis and treatment measures of a liquid flooding accident [J]. Zhongnitrofertilizer., 2014,3 (5): 35-36 [3] Zhao Botao, Zhang Huaisheng. Research on the Operating Elasticity of Wire Mesh Separators [J]. Guangzhou Chemical., 2017, 45 (16): 86-88 [4] Wei Junhui, Cai Jinhui, Tang Jianbin, Yao Yan, Jiang Qing. Comprehensive Performance Testing System for Pressure Transmitters [J]. Automation and Instrumentation, 2012,27 (2): 16-19 [5] Han Shudong, Liu Wei, Meng Changchun, et al. Analysis of the causes of flooding in alcohol chlorination towers and countermeasures [J]. China Chloroalkali, 2015,8 (): 33-35 [6] Zhang Yanhui, Analysis of the Causes and Treatment Methods of Liquid Flooding [J], Heilongjiang Science, 2016,1 (7): 22-23 [7] Gao Zengliang, Yang Jie, Liu Yi, et al. A Near Field Acoustic Holographic Filling Tower Flooding Monitoring Method [P]. 201110449694.3 [8] Jin Weiya, Zhang Feng, Chen Bingbing, et al. Liquid flooding prediction method for packed tower based on pressure drop standard deviation analysis [P]. 201410554212.4