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首页> 外文期刊>Energy Conversion & Management >The retrofitting of a coal-fired subcritical steam power plant for carbon dioxide capture: A comparison between MCFC-based active systems and conventional MEA
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The retrofitting of a coal-fired subcritical steam power plant for carbon dioxide capture: A comparison between MCFC-based active systems and conventional MEA

机译：二氧化碳捕获燃煤亚临界蒸汽发电厂的改造：基于MCFC的活性系统与常规MEA的比较

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摘要

The major technological driver in energy and industrial sectors is the reduction of CO2 emissions. Huge technological effort is ongoing towards efficiency improvement of conversion systems, to reduce fossil fuel consumption. Capture and sequestration of CO2 on the flue gases represents an invaluable technology and among the only ones able to sustain the fossil fuel energy economy which cannot be replaced in short-term.In many cases, it produces significant energy penalties on the reference plant, being implemented through passive systems. In other cases, defined as active systems, it fulfils the goal of carbon capture without energy consumption or with energy production. In this regard, Molten Carbonate Fuel Cell (MCFC) concentrates CO2 at the anode exhaust, making easier the separation phase and increasing, also, electrical energy production.Therefore, a physically-based model of the MCFC was developed to assess the positive aspects related to the CO2 remover application, when it is integrated to a 250 WV coal-fired power plant. The removal capacity has been evaluated up to 95% and the calculated additional electricity produced can increase the overall efficiency of about 4% with respect to original value. The steam needed by the fuel cell can be extracted from the original steam power plant or it can be produced by a dedicated steam generator. These two options have been compared in terms of energetic and environmental performance. A cost analysis has been done in order to evaluate the best integration opportunity and to provide a comparison to a more conventional MEA (monoethanolamine) system.
机译：能源和工业部门的主要技术司机是减少二氧化碳排放。巨大的技术努力正在努力改善转换系统，以减少化石燃料消耗。 Co2对烟道气的捕获和封存代表了一种宝贵的技术，并且在唯一能够维持化石燃料能量经济的人中不能在很短的情况下替换的那种技术，它在很多情况下产生了显着的能源处罚，即通过被动系统实施。在其他情况下，定义为活性系统，它符合碳捕获的目标，没有能量消耗或能量产生。在这方面，熔融碳酸盐燃料电池（MCFC）浓缩CO 2在阳极排气，使分离阶段更容易，并且增加，也是电能产生。因此，开发了MCFC的物理基础模型，以评估相关的阳性方面到CO2去除申请，当它集成到250 WV燃煤发电厂时。已经评估了去除容量高达95％，并且所产生的计算额外的电力可以相对于原始值提高约4％的总效率。燃料电池所需的蒸汽可以从原始蒸汽发电厂提取，或者它可以由专用蒸汽发生器产生。在精力充沛和环境绩效方面比较了这两种选择。已经进行了成本分析，以评估最佳的整合机会，并提供与更常规的MEA（单乙醇胺）系统的比较。

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