Performance and Cost Analysis of Natural Gas Combined Cycle Plants with Chemical Looping Combustion

Dong Hoon Oh, Chang Ha Lee, Jae Cheol Lee

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


The natural gas combined cycle (NGCC) is the most popular and efficient fossil fuel power plant; however, integrating a carbon capture system reduces its performance efficiency. The demand to reduce the carbon capture cost and improve eco-friendliness drives the development of alternatives. In this study, four alternative NGCC-based process schemes were designed: NGCC with amine carbon capture as a base configuration and NGCCs with three different chemical looping combustion (CLC) configurations. Detailed heat and material balances were evaluated for all four cases using the PRO/II simulation package. A comparative analysis of the gross and net power, plant efficiency, and carbon capture efficiency, which are imperative to optimizing the process configuration, was conducted for all of the proposed cases. All NGCC-CLC processes could produce higher net power than NGCC-MEA because the amine regenerator consumes a high amount of power in its operation. In the condition using an equal amount of natural gas supply, NGCC-CLC configurations using excess air could produce a net power of 510.1 MW with a plant efficiency of 44.35%. The excess air fed in both cases enabled the turbine to generate more power. NGCC-CLC using excess air with steam turbine integration has an investment cost of 132.9 $/net MWh, an operating cost of 56.7 $/net MWh year, and a levelized cost of electricity of 90.9 $/MWh. In addition, NGCC-CLC with excess air resulted in a carbon capture efficiency of 99.93% under 59.2 $/ton of CO2, which was higher than that of NGCC-MEA with a carbon efficiency of 95.1%. NGCC-CLC using excess air with steam turbine integration is considered as the most efficient process scheme for generating power from natural gas with regard to efficiency, cost, and environmental impact.

Original languageEnglish
Pages (from-to)21043-21058
Number of pages16
JournalACS Omega
Issue number32
Publication statusPublished - 2021 Aug 17

Bibliographical note

Funding Information:
This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government (MOTIE) (no. 20172010202070, Development of upgrading technology for the postcombustion advanced amine CO capture related to Mid-scale CO storage). 2 2

Publisher Copyright:
© 2021 The Authors. Published by American Chemical Society.

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)


Dive into the research topics of 'Performance and Cost Analysis of Natural Gas Combined Cycle Plants with Chemical Looping Combustion'. Together they form a unique fingerprint.

Cite this