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Life-cycle assessment of SO2 removal from flue gas using carbonate melt
Journal of Industrial and Engineering Chemistry ( IF 5.9 ) Pub Date : 2021-05-13 , DOI: 10.1016/j.jiec.2021.05.013
Junghwan Kim , Juwon Lee , Hyungtae Cho , Yuchan Ahn

To determine the environmentally-benign process between the carbonate melt flue gas desulfurization (CMFGD) and the conventional process as the process of removing SO2 from the flue gas, in this paper, a life cycle assessment is applied using the data derived from the process simulation, including the heat integration methodology. The CMFGD process has a 14.4%–26.8% lower environmental impact than the conventional process on all indicators. To achieve the economic and environmental benefits of the CMFGD process, a heat exchanger network (HEN) is introduced using HI to use the heat wasted in the CMFGD process. The HEN reduces environmental impacts (i.e., reduced CC by 24.46%, and PM by 49.96%), and economics (reduced total levelized cost by 0.8%) compared to the CMFGD process before HI. These results suggest that the CMFGD process can replace the conventional methods to remove SO2 from the flue gas and can have environmental benefits by reducing CC and PM, significantly influencing the atmosphere.



中文翻译:

使用碳酸盐熔体从烟道气中去除SO 2 的生命周期评估

确定碳酸盐熔体烟气脱硫 (CMFGD) 与传统工艺作为去除 SO 2 的工艺之间的环保工艺对于烟气,在本文中,使用来自过程模拟的数据(包括热集成方法)应用了生命周期评估。在所有指标上,CMFGD 工艺对环境的影响比传统工艺低 14.4%–26.8%。为了实现 CMFGD 工艺的经济和环境效益,引入了一个使用 HI 的换热器网络 (HEN),以利用 CMFGD 工艺中浪费的热量。与 HI 之前的 CMFGD 工艺相比,HEN 降低了环境影响(即,CC 降低了 24.46%,PM 降低了 49.96%)和经济性(总平准化成本降低了 0.8%)。这些结果表明 CMFGD 工艺可以取代传统的去除 SO 2 的方法 来自烟道气,可以通过减少 CC 和 PM 产生环境效益,显着影响大气。

更新日期:2021-06-23
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