Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
BECCS with combined heat and power: Assessing the energy penalty
Highlights CO2 capture added to a biomass-fuelled combined heat and power plant was assessed. If heat is recovered, the minimum total energy penalty was estimated to 2–4%. In district heating settings, minimum cost-of-energy for CO2 capture was 2–5 €/ton. The potassium carbonate absorption process was simulated using Aspen Plus™. The Aspen Plus models were validated with a bio-energy carbon capture test plant.
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 partly 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 2%–4%. 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
Highlights CO2 capture added to a biomass-fuelled combined heat and power plant was assessed. If heat is recovered, the minimum total energy penalty was estimated to 2–4%. In district heating settings, minimum cost-of-energy for CO2 capture was 2–5 €/ton. The potassium carbonate absorption process was simulated using Aspen Plus™. The Aspen Plus models were validated with a bio-energy carbon capture test plant.
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 partly 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 2%–4%. 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 (Autor:in) / Sadegh-Vaziri, Ramiar (Autor:in) / Grönkvist, Stefan (Autor:in) / Levihn, Fabian (Autor:in) / Sundberg, Cecilia (Autor:in)
27.12.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch