Sulfur dioxide (SO₂) is a pollutant that is mainly emitted in thermal coal-fired power plants, and it causes air pollution, which is required to be removed since it adversely affects the atmosphere environment. This study presents a novel approach to remove SO₂ using carbonate melt by designing a flue gas desulfurization (FGD) process that uses a carbonate melt desulfurization (CMD) subsystem to remove >99.9 wt% of SO₂ and a carbonate melt regeneration (CMR) subsystem that recovers ~99 wt% of the melt. To reduce the operating costs of the proposed process, a heat-exchanger network was developed to use the waste heat that existed in the process. The levelized cost of the proposed FGD process using carbonate melt was determined as US$ 761/ton SO₂ removed and is therefore cost-competitive with other SO₂ removal technologies. Sensitivity analysis indicates that coal price is the main driver of levelized cost.

二氧化硫（SO ₂）是主要在火力发电厂中排放的污染物，会造成空气污染，由于对大气环境有不利影响，因此必须将其清除。这项研究提出了一种通过设计烟道气脱硫（FGD）工艺来使用碳酸盐熔体去除SO ₂的新颖方法，该工艺使用碳酸盐熔体脱硫（CMD）子系统去除> 99.9 wt％的SO ₂和碳酸盐熔体再生（CMR）回收约99％（重量）熔体的子系统。为了减少所建议过程的运营成本，开发了一个热交换器网络来利用过程中存在的废热。拟议的使用碳酸盐熔体的烟气脱硫工艺的平均成本确定为761美元/吨SO ₂去除，因此与其他SO ₂去除技术具有成本竞争力。敏感性分析表明，煤炭价格是成本平均化的主要驱动力。