Techno-economic assessment of carbonate melt flue gas desulfurization process. (March 2021)

• Record Type: Journal Article
• Authors: Lee, Juwon; Cho, Hyungtae; Moon, Il; Lubomirsky, Igor; Kaplan, Valery; Kim, Junghwan; Ahn, Yuchan
• Is Part Of: Computers & chemical engineering. Volume 146(2021)
• Publication Date: 2021-03
• Subjects: Carbonate melt -- Sulfur dioxide -- Regeneration -- Heat integration -- Techno-economic assessment -- Pollution abatement; Chemical engineering -- Data processing -- Periodicals; 660.0285
• DOI: 10.1016/j.compchemeng.2021.107227
• Languages: English
• ISSNs: 0098-1354

Abstract

Abstract: 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.