The State of the Art in Selective Catalytic Reduction Control
The State of the Art in Selective Catalytic Reduction Control
复制标题
选择性催化还原控制的最新技术
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
T. Steffen
中科院分区：
文献类型：
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作者：
Z. Skaf;T. Aliyev;L. Shead;T. Steffen
选择性催化还原（SCR）是一种用于从废气中去除氮氧化物（NOx）（DeNOx）的领先后处理技术。它提出了一个有趣的控制挑战，特别是在高转化率下，因为两种试剂（NOx和氨）都是有毒的，因此任何一种过量都是非常不可取的。由于满足未来排放标准的需要，已经为SCR系统开发了许多系统布局和控制方法。本文对SCR后处理系统的控制方法进行了综述，并对SCR控制的研究进行了系统、全面的综述。现有的控制技术分为三大类：传统的SCR控制方法，基于模型的SCR控制方法，和先进的SCR控制方法。对于每一个类别，定义了基本的控制技术。然后解释同一类别中的其他技术，并了解它们的相对优点和缺点。因此，本文提出了一个快照的研究领域的SCR控制的最新技术水平。这是一个非常活跃的领域，并且希望通过提供对已经为SCR控制开发的不同控制策略的更好理解，未来感兴趣的领域将被识别和开发，最终目标是满足日益严格的排放法规。版权所有© 2014 SAE International.
Selective Catalytic Reduction (SCR) is a leading after treatment technology for the removal of nitrogen oxide (NOx) from exhaust gases (DeNOx). It presents an interesting control challenge, especially at high conversion, because both reagents (NOx and ammonia) are toxic, and therefore an excess of either is highly undesirable. Numerous system layouts and control methods have been developed for SCR systems, driven by the need to meet future emission standards. This paper summarizes the current state-of-the-art control methods for the SCR aftertreatment systems, and provides a structured and comprehensive overview of the research on SCR control. The existing control techniques fall into three main categories: traditional SCR control methods, model-based SCR control methods, and advanced SCR control methods. For each category, the basic control technique is defined. Further techniques in the same category are then explained and appreciated for their relative advantages and disadvantages. Thus this paper presents a snapshot of the current state of the art for the research area of SCR control. This is a very active field, and it is hoped that by providing a better understanding of the different control strategies already developed for SCR control, future areas of interest will be identified and developed with the ultimate aim of satisfying the increasingly stringent emissions legislation. Copyright © 2014 SAE International.