Acoustic emission detection of slag performance in coal gasifiers

doi:10.1016/j.cjche.2020.05.038

中国化学工程学报 ›› 2020, Vol. 28 ›› Issue (8): 2200-2207.DOI: 10.1016/j.cjche.2020.05.038

• Energy, Resources and Environmental Technology • 上一篇下一篇

Acoustic emission detection of slag performance in coal gasifiers

Zhengliang Huang¹, Peng Zhang¹, Yao Yang¹, Jingyuan Sun¹, Jingdai Wang², Yongrong Yang², Chenghao Huang³, Zhixiong Huang³

1 College of Chemical and Biological Engineering, Zhejiang University, Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Hangzhou 310027, China;
2 State Key Laboratory of Chemical Engineering, Hangzhou 310027, China;
3 Sinopec Group, Anqing Branch, Anqing 246000, China

收稿日期:2020-02-26 修回日期:2020-04-02 出版日期:2020-08-28 发布日期:2020-09-19
通讯作者: Yao Yang
基金资助:
The authors acknowledge the support and encouragement of The National Science Fund for Distinguished Young (21525627) and the Science Fund for Creative Research Groups of National Natural Science Foundation of China (61621002).

Acoustic emission detection of slag performance in coal gasifiers

Zhengliang Huang¹, Peng Zhang¹, Yao Yang¹, Jingyuan Sun¹, Jingdai Wang², Yongrong Yang², Chenghao Huang³, Zhixiong Huang³

1 College of Chemical and Biological Engineering, Zhejiang University, Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Hangzhou 310027, China;
2 State Key Laboratory of Chemical Engineering, Hangzhou 310027, China;
3 Sinopec Group, Anqing Branch, Anqing 246000, China

Received:2020-02-26 Revised:2020-04-02 Online:2020-08-28 Published:2020-09-19
Contact: Yao Yang
Supported by:
The authors acknowledge the support and encouragement of The National Science Fund for Distinguished Young (21525627) and the Science Fund for Creative Research Groups of National Natural Science Foundation of China (61621002).

摘要/Abstract

摘要： This work first investigated the detection of slags, slag pool liquid level, and slag accumulation height in laboratory scale based on acoustic emission (AE) detection, and further tried the feasibility of this method in an industrial scale coal gasifier. Results show that the energy and variance of acoustic signals can realize the accurate detection of large slag (criterion: E > 1.5E₀, S > 1.2S₀), and the average relative error is only 0.28%. The acoustic energy in the frequency range of 20-40 kHz is defined as the characteristic energy, which can realize the accurate detection of slag accumulation height and slag pool liquid level, and the average relative error is only 3.94%. Furthermore, AE detection also realize accurate detection of large slag in an industrial scale gasifier and the acoustic signals at slag screen can be used to realize the early warning of the slag collapse (5 h earlier).

关键词: Acoustic emission (AE) detection, Slag pool liquid level, Slag accumulation height, Early warning

Abstract: This work first investigated the detection of slags, slag pool liquid level, and slag accumulation height in laboratory scale based on acoustic emission (AE) detection, and further tried the feasibility of this method in an industrial scale coal gasifier. Results show that the energy and variance of acoustic signals can realize the accurate detection of large slag (criterion: E > 1.5E₀, S > 1.2S₀), and the average relative error is only 0.28%. The acoustic energy in the frequency range of 20-40 kHz is defined as the characteristic energy, which can realize the accurate detection of slag accumulation height and slag pool liquid level, and the average relative error is only 3.94%. Furthermore, AE detection also realize accurate detection of large slag in an industrial scale gasifier and the acoustic signals at slag screen can be used to realize the early warning of the slag collapse (5 h earlier).

Key words: Acoustic emission (AE) detection, Slag pool liquid level, Slag accumulation height, Early warning

Zhengliang Huang, Peng Zhang, Yao Yang, Jingyuan Sun, Jingdai Wang, Yongrong Yang, Chenghao Huang, Zhixiong Huang. Acoustic emission detection of slag performance in coal gasifiers[J]. 中国化学工程学报, 2020, 28(8): 2200-2207.

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Acoustic emission detection of slag performance in coal gasifiers

Acoustic emission detection of slag performance in coal gasifiers

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