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A platform for research: civil engineering, architecture and urbanism
BECCS with combined heat and power: assessing the energy penalty
Abstract Bio-energy with carbon capture and storage (BECCS) is widely recognised as an important carbon dioxide removal technology. Nevertheless, BECCS has mostly failed to move beyond small-scale demonstration units. One main factor is the energy penalty incurred on power plants. In previous studies, this penalty has been determined to be 37.2–48.6% for the amine capture technology. The aim of this study is to quantify the energy penalty for adding the hot potassium carbonate (HPC) capture technology to a biomass-fired combined heat and power (CHP) plant, connected to a district heating system. In this context, the energy driving the capture process is partially recovered as useful district heating. Therefore, a modified energy penalty is proposed, with the inclusion of recovered heat. This inclusion is especially meaningful if the heat has a substantial monetary value. The BECCS system is examined using thermodynamic analysis, coupled with modelling of the capture process in Aspen Plus™. Model validation is performed with data from a BECCS test facility. The results of this study show that the modified energy penalty is in the range of -3% to 7%. These findings could potentially increase the attractiveness of BECCS as a climate abatement option in a district heating CHP setting.
BECCS with combined heat and power: assessing the energy penalty
Abstract Bio-energy with carbon capture and storage (BECCS) is widely recognised as an important carbon dioxide removal technology. Nevertheless, BECCS has mostly failed to move beyond small-scale demonstration units. One main factor is the energy penalty incurred on power plants. In previous studies, this penalty has been determined to be 37.2–48.6% for the amine capture technology. The aim of this study is to quantify the energy penalty for adding the hot potassium carbonate (HPC) capture technology to a biomass-fired combined heat and power (CHP) plant, connected to a district heating system. In this context, the energy driving the capture process is partially recovered as useful district heating. Therefore, a modified energy penalty is proposed, with the inclusion of recovered heat. This inclusion is especially meaningful if the heat has a substantial monetary value. The BECCS system is examined using thermodynamic analysis, coupled with modelling of the capture process in Aspen Plus™. Model validation is performed with data from a BECCS test facility. The results of this study show that the modified energy penalty is in the range of -3% to 7%. These findings could potentially increase the attractiveness of BECCS as a climate abatement option in a district heating CHP setting.
BECCS with combined heat and power: assessing the energy penalty
GUSTAFSSON, Kåre (author) / SADEGH-VAZIRI, Ramiar (author) / GRÖNKVIST, Stefan (author) / LEVIHN, Fabian (author) / SUNDBERG, Cecilia (author)
2021-01-01
Article (Journal)
Electronic Resource
English