不同进电方式对铝电解槽阳极电流非接触式测量的影响

doi:10.3969/j.issn.0438-1157.2013.10.030

化工学报 ›› 2013, Vol. 64 ›› Issue (10): 3701-3707.DOI: 10.3969/j.issn.0438-1157.2013.10.030

不同进电方式对铝电解槽阳极电流非接触式测量的影响

董英^1,2, 周孑民^1,2, 李茂^1,2, 周益文^1,3, 杨建红³

1. 中南大学能源科学与工程学院, 湖南长沙 410083;
2. 中南大学流程工业节能湖南省重点实验室, 湖南长沙 410083;
3. 中国铝业股份有限公司郑州研究院, 河南郑州 450041

收稿日期:2013-02-26 修回日期:2013-07-01 出版日期:2013-10-05 发布日期:2013-10-05
通讯作者: 李茂
作者简介:董英(1989-),男,硕士研究生。
基金资助:
国家高技术研究发展计划项目(2010AA065201);国家自然科学基金项目(50974127,50876116)

Influence of different risers on non-contact measurement of individual anode current in aluminum reduction cell

DONG Ying^1,2, ZHOU Jiemin^1,2, LI Mao^1,2, ZHOU Yiwen^1,3, YANG Jianhong³

1. School of Energy Science and Engineering, Central South University, Changsha 410083, Hunan, China;
2. Hunan Key Laboratory of Energy Conservation in Process Industry, Central South University, Changsha 410083, Hunan, China;
3. Zhengzhou Research Institute, CHALCO Ltd., Zhengzhou 450041, Henan, China

Received:2013-02-26 Revised:2013-07-01 Online:2013-10-05 Published:2013-10-05
Supported by:
supported by the High-tech Research and Development Program of China(2010AA065201)and the National Natural Science Foundation of China(50974127,50876116).

摘要/Abstract

摘要： 针对目前铝电解槽阳极电流在线测试方法的不足,基于铝电解槽电磁场的理论,借鉴国外学者通过测试导杆附近的磁场来得到阳极电流的思想,提出了一种阳极电流非接触式测试方法,并着重针对铝电解槽不同的进电方式分析了阳极电流的测量误差,并对误差进行了修正,对测试方案进行了优化,旨在实现阳极电流的实时监测和在线控制。研究结果表明,300 kA大面五点进电槽的阳极电流测量误差可以控制在±0.25%之内,而400 kA大面六点进电槽、200 kA大面四点进电槽的阳极电流测量误差分别达到了±0.8%和±3%;可见不同进电方式对阳极电流的测量误差有较为明显的影响,但最大误差均不超过3%。因此,对于不同进电方式及结构的铝电解槽阳极电流的在线监测,该非接触式测试方法均具有较好的适用性。

关键词: 铝电解槽, 非接触式测量, 阳极电流, 多传感器测试方法, 磁场

Abstract: By referring to the measurement principle of individual anode current through obtaining the magnetic field near the anode,a new non-contact measurement of individual anode currents based on the principle of electromagnetic field,was developed.The error distribution of the anode current on various current risers in aluminum reduction cell was analyzed and the measurement method was optimized to realize anode current real time monitoring and on-line control.The relative errors of anode current in 300 kA cell were within ±0.25%,but the relative errors of anode current in 400 kA and 200 kA cells were ±0.8% and ±3% respectively.Current risers had an influence on the relative errors of anode current,but the maximal error was within 3%.Therefore,the non-contact measurement was applicable to online monitoring of individual anode current with different current risers and structures in aluminum reduction cell.

Key words: aluminum reduction cell, non-contact measurement, anode currents, multi-sensor method, magnetic fields

中图分类号:

TF821

董英, 周孑民, 李茂, 周益文, 杨建红. 不同进电方式对铝电解槽阳极电流非接触式测量的影响[J]. 化工学报, 2013, 64(10): 3701-3707.

DONG Ying, ZHOU Jiemin, LI Mao, ZHOU Yiwen, YANG Jianhong. Influence of different risers on non-contact measurement of individual anode current in aluminum reduction cell[J]. CIESC Journal, 2013, 64(10): 3701-3707.

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不同进电方式对铝电解槽阳极电流非接触式测量的影响

Influence of different risers on non-contact measurement of individual anode current in aluminum reduction cell

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