Techno-economic assessment of carbonate melt flue gas desulfurization process

Juwon Lee, Hyungtae Cho, Il Moon, Igor Lubomirsky, Valery Kaplan, Junghwan Kim, Yuchan Ahn

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Article number107227
Number of pages8
JournalComputers and Chemical Engineering
Early online date7 Jan 2021
StatePublished - Mar 2021


  • Carbonate melt
  • Heat integration
  • Pollution abatement
  • Regeneration
  • Sulfur dioxide
  • Techno-economic assessment

All Science Journal Classification (ASJC) codes

  • General Chemical Engineering
  • Computer Science Applications


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