Advances in Process Control for Aluminium Smelters
Advances in Process Control for Aluminium Smelters
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DOI：
10.1080/10426910701454139
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发表时间：
2007-09
影响因子：
4.8
通讯作者：
M. Taylor;J. J. Chen-J.
中科院分区：
文献类型：
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作者：
M. Taylor;J. J. Chen-J.
随着现有工厂的安培数增加，以及新工厂和现有工厂的环境和能源限制收紧，冶炼厂控制已成为降低成本和提高产品质量以及环境合规性的最大杠杆点。冶炼厂的经营许可证现在越来越依赖于公司对其业务进行密切控制的声誉。这一许可证对建设新冶炼厂的公司更为重要。本文讨论了冶炼厂从业人员、设计人员和工程师每天面临的一些问题，这些问题涉及冶炼厂工艺变化的驱动因素和减少变化的杠杆。首先需要在管理层对控制的理解和思考进行一步改变，并讨论了这种改变。对工程师和科学家进行更好的过程控制教育是必不可少的，这样就可以在广泛的战线上对工厂控制缺陷和故障进行更严格的分析。这是所需的第二个重要进展。第三个主要的进展涉及研究和开发，为具有极端可观测性，可控性和临界特性的多变量，非平稳过程提供工具。这描述了铝冶炼厂控制中遇到的一些但不是全部特征。讨论了一些有前途的研究方向和应用。
As amperages have increased on existing plants and environmental and energy constraints have tightened on both new and existing ones, smelter control has become the biggest leverage point for not only cost reduction and product quality improvement, but also for environmental compliance. The license to operate smelters now is becoming increasingly dependent on the reputation of companies for close control of their operations. This licence is even more important for companies building new smelters. The present article addresses some of the issues smelter practitioners, designers, and engineers face on a daily basis concerning the drivers of smelter process variation and the levers to reduce it. A step change in the understanding and thinking about control is required first at a managerial level, and this change is discussed. Better education concerning process control is essential for engineers and scientists so that more rigorous analysis of plant control defects and failures can occur on a broad front. This is the second important advance required. The third major advance concerns research and development to provide tools for multivariate, non-stationary processes that have extreme observability, controllability, and criticality characteristics. This describes some but not all of the features that are encountered in the control of aluminium smelters. Some promising research directions and applications are discussed.