Techno-Economic Assessment of a Combined Heat and Power Plant Integrated with Carbon Dioxide Removal Technology: A Case Study for Central Poland

Paweł Gładysz, Anna Sowiżdżał, Maciej Miecznik, Maciej Hacaga and Leszek Pająk
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Paweł Gładysz: Faculty of Energy and Fuels, AGH University of Science and Technology, 30-059 Kraków, Poland
Anna Sowiżdżał: Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, 30-059 Kraków, Poland
Maciej Miecznik: Department of Renewable Energy and Environmental Research, Mineral and Energy Economy Research Institute of the Polish Academy of Sciences, 31-261 Kraków, Poland
Maciej Hacaga: Faculty of National Security, War Studies University, 00-910 Warszawa, Poland
Leszek Pająk: Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, 30-059 Kraków, Poland

Energies, 2020, vol. 13, issue 11, 1-34

Abstract: The objective of this study is to assess the techno-economic potential of the proposed novel energy system, which allows for negative emissions of carbon dioxide (CO 2 ). The analyzed system comprises four main subsystems: a biomass-fired combined heat and power plant integrated with a CO 2 capture and compression unit, a CO 2 transport pipeline, a CO 2 -enhanced geothermal system, and a supercritical CO 2 Brayton power cycle. For the purpose of the comprehensive techno-economic assessment, the results for the reference biomass-fired combined heat and power plant without CO 2 capture are also presented. Based on the proposed framework for energy and economic assessment, the energy efficiencies, the specific primary energy consumption of CO 2 avoidance, the cost of CO 2 avoidance, and negative CO 2 emissions are evaluated based on the results of process simulations. In addition, an overview of the relevant elements of the whole system is provided, taking into account technological progress and technology readiness levels. The specific primary energy consumption per unit of CO 2 avoided in the analyzed system is equal to 2.17 MJ LHV /kg CO 2 for biomass only (and 6.22 MJ LHV /kg CO 2 when geothermal energy is included) and 3.41 MJ LHV /kg CO 2 excluding the CO 2 utilization in the enhanced geothermal system. Regarding the economic performance of the analyzed system, the levelized cost of electricity and heat are almost two times higher than those of the reference system (239.0 to 127.5 EUR/MWh and 9.4 to 5.0 EUR/GJ), which leads to negative values of the Net Present Value in all analyzed scenarios. The CO 2 avoided cost and CO 2 negative cost in the business as usual economic scenario are equal to 63.0 and 48.2 EUR/t CO 2 , respectively, and drop to 27.3 and 20 EUR/t CO 2 in the technological development scenario. The analysis proves the economic feasibility of the proposed CO 2 utilization and storage option in the enhanced geothermal system integrated with the sCO 2 cycle when the cost of CO 2 transport and storage is above 10 EUR/t CO 2 (at a transport distance of 50 km). The technology readiness level of the proposed technology was assessed as TRL4 (technological development), mainly due to the early stage of the CO 2 -enhanced geothermal systems development.

Keywords: CO 2 capture; utilization and storage; combined heat and power; CO 2 enhanced geothermal systems; supercritical CO 2 power cycles; biomass; negative emission technologies (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (10)

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