State surveillance and fault diagnosis of distillation columns using residual network-based passive acoustic monitoring  

作　　者：Haotian Zheng Zhixi Zhang Guangyan Wang Yatao Wang Jun Liang Weiyi Su Yuqi Hu Xiong Yu Chunli Li Honghai Wang 

机构地区：[1]School of Chemical Engineering and Technology,National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization,Hebei University of Technology,Tianjin 300130,China [2]School of Information Engineering,Tianjin University of Commerce,Tianjin 300134,China [3]Coal Chemical R&D Center of Kailuan Group,Tangshan 063007,China

出　　处：《Chinese Journal of Chemical Engineering》2025年第1期248-258,共11页中国化学工程学报(英文版)

基　　金：the National Natural Science Foundation of China(22308079);the Natural Science Foundation of Hebei Province,China(B2022202008,B2023202025);the Science and Technology Project of Hebei Education Department,China(BJK2022037).

摘　　要：The operational state of distillation columns significantly impacts product quality and production efficiency.However,due to the complex operation and diverse influencing factors,ensuring the safety and efficient operation of the distillation columns becomes paramount.This research combines passive acoustic monitoring with artificial intelligence techniques,proposed a technology based on residual network(ResNet),which involves the transformation of the acoustic signals emitted by three distillation columns under different operating states.The acoustic signals were initially in one-dimensional waveform format and then converted into two-dimensional Mel-Frequency Cepstral Coefficients spectrogram database using fast Fourier transform.Ultimately,this database was employed to train a ResNet for the purpose of identifying the operational states of the distillation columns.Through this approach,the operational states of distillation columns were monitored.Various faults,including flooding,entrainment,dry-tray,etc.,were diagnosed with an accuracy of 98.91%.Moreover,an intermediate transitional state between normal operation and fault was identified and accurately recognized by the proposed method.Under the transitional state,the acoustic signals achieved an accuracy of 97.85%on the ResNet,which enables early warnings before faults occur,enhancing the safety of chemical production processes.The approach presents a powerful tool for the monitoring and diagnosis of chemical equipment,particularly distillation columns,ensuring the safety and efficiency.

关 键 词：DISTILLATION COLUMN Acoustic signal Neural network 

分 类 号：F42[经济管理—产业经济]