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.

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。