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控制和减缓化石能源燃烧所排放的CO2对于缓解全球变暖和温室效应具有重要意义。一乙醇胺(MEA)湿法脱碳是一种比较成熟的燃烧后脱碳技术,但吸收剂再生能耗大一直是其不能在燃煤电站中得到大规模工业应用的主要原因。文中以某600 MW机组为研究对象,对MEA脱碳流程及电厂热力系统进行了整合分析,并利用化工流程模拟软件Aspen plus完成了流程模拟,进而对CO2捕获率、MEA贫液负荷、再生塔运行压力、贫富液热侧换热温差等流程参数进行优化,以降低吸收剂再生能耗,减少CO2捕集系统集成后对机组总体性能的影响。
Control and mitigation of CO2 emissions from burning fossil fuels are of great importance for mitigating global warming and the greenhouse effect. Wet decarbonation of monoethanolamine (MEA) is a relatively mature post-combustion decarburization technology, but the large regenerative energy consumption of absorbent has always been the main reason that it can not be used in large-scale industrial applications in coal-fired power stations. In this paper, taking a 600 MW unit as the research object, the MEA decarbonization process and thermal power system of the power plant are analyzed and integrated, and the process simulation is completed by the chemical process simulation software Aspen plus. The CO2 capture rate, MEA lean liquid load, Operating pressure, temperature difference between rich and poor liquid and other process parameters are optimized to reduce the regenerative energy consumption of the absorber and reduce the impact of the integration of the CO2 capture system on the overall performance of the unit.