Thermodynamic and ecological assessment of selected coal-fired power plants integrated with carbon dioxide capture

Anna Skorek-Osikowska, Łukasz Bartela and Janusz Kotowicz

Applied Energy, 2017, vol. 200, issue C, 73-88

Abstract: The primary objective of the study presented in this paper was a thermodynamic and ecological analysis of coal-fired power plants integrated with carbon dioxide capture installations working in different technologies (pre-combustion, oxy-combustion and post-combustion) and a comparison of these systems with reference systems, i.e. ones not-integrated with CO2 capture. Calculations were performed using our own developed mathematical models for the integrated units. The article quantitatively demonstrates that the integration of a carbon dioxide capture installation with a power plant causes a significant decrease in the net power and efficiency in relation to the reference system (without capture). In the case of a conventional coal unit working in the post-combustion technology and integrated with an absorption CO2 capture installation and compression of carbon dioxide to 15MPa, the net efficiency decreases in relation to the reference plant by 11.75 percentage points. The oxy-combustion unit was characterized by a decrease in efficiency (in relation to the power plant operating in the air combustion technology not integrated with Carbon Capture and Storage (CCS) installation) equal to 7.85 percentage points. In the unit working in pre-combustion technology (Integrated Gasification Combined Cycle (IGCC) system) integrated with a membrane CO2 separation installation the efficiency decrease relative to the unit without capture was equal to 16.89 percentage points.

Keywords: Coal-fired power plants; CO2 capture; Thermodynamic analysis; Environmental assessment (search for similar items in EconPapers)
Date: 2017
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Citations: View citations in EconPapers (10)

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DOI: 10.1016/j.apenergy.2017.05.055

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