Open-loop step responses for the MEA post-combustion capture process: Experimental results from the Esbjerg pilot plant
Open-loop step responses for the MEA post-combustion capture process: Experimental results from the Esbjerg pilot plant
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MEA 燃烧后捕集过程的开环阶跃响应：埃斯比约中试工厂的实验结果
DOI：
10.1016/j.egypro.2011.02.008
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
J. Andersen
中科院分区：
文献类型：
--
作者：
R. Faber;M. Köpcke;O. Biede;J. N. Knudsen;J. Andersen
基于胺的燃烧后捕集被认为是未来燃煤电厂CO2捕集的一种有前途的技术。从烟气中去除CO2的耦合吸收/解吸系统与发电厂和下游CO2压缩、运输和储存高度集成。随着替代能源形式（例如风力）的比例增加，对现代燃煤发电厂提供调节净功率的需求也在增加，导致运行期间频繁且快速的负载变化。为了使CCS在这些电厂的实施在技术上和经济上可行，捕获过程必须能够跟随这些快速的负荷变化，而不会限制电厂的整体性能。为了研究单个设备组件的瞬态行为以及捕获装置的整体动态性能，在欧盟项目塞萨尔内的1吨CO2/小时中试设备上对基于胺的后燃烧工艺进行了阶跃响应测试。测试的目的是获得关于动态操作期间可能出现的问题或瓶颈的知识，其中工厂从一个操作点到另一个操作点。逐步改变三个操作参数，并监测整个系统的响应。本文给出了试验结果，并对系统的响应进行了分析。一般而言，在进行阶跃响应测试期间，未发现非预期观察结果，也未发现瓶颈。整个系统的作用就像一个缓冲器的任何扰动在入口处，这是一个希望的效果，考虑到未来的下游压缩单元。扰动后整个系统达到新的稳态操作条件的平均时间在1小时15分钟和1小时45分钟之间。然而，耦合的吸收器/解吸器系统的相互作用，导致在系统中的波动，当所有的参数已经同时改变。
Amine based post-combustion capture is seen as one promising technology for future coal fired power plants with CO2capture. The coupled absorption/desorption system to remove the CO2from the flue gas is highly integrated with the power plant and the downstream CO2compression, transportation and storage. With increasing portion of alternative energy forms like e.g. wind power, the demand on modern coal-fired power plants to provide regulating net power is increasing, leading to frequent and fast load changes during operation. To make the implementation of CCS to these plants technically and economically feasible, the capture process has to be able to follow these fast load changes without restraining the overall plant performance. To investigate the transient behavior of the individual plant components, as well as the overall dynamic performance of the capture unit, step response tests have been performed at a 1 ton CO2/hour pilot plant for the amine-based post-combustion process within the EU project CESAR. The purpose of the tests was to gain knowledge about possible problems or bottlenecks during a dynamic operation where the plant is going from one operation point to another. Three operation parameters were changed stepwise and the response of the entire system was monitored. In this paper the results of the tests are shown and the response of the system is analyzed. In general, no unexpected observations were made and no bottlenecks were found during the step response tests performed. The overall system acts like a buffer for any perturbation at the inlet, which is a wanted effect considering the future downstream compression unit. The average time for the entire system to reach the new steady state operating conditions after the perturbation was between 1 h 15 min and 1 h 45 min. However the interaction of the coupled absorber/desorber system led to fluctuations in the system, when all parameters have been changed simultaneously.