Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Modeling and simulation of the start-up process of coal fired power plants with post-combustion CO2 capture
Highlights A model of a coal fired power plant coupled to a post-combustion capture plant to study the start-up process is presented. A sequence control is combined with suitable control structures to achieve an automatic start-up of the process. The start-up results show that the total start-up time of the capture plant is 2.54 h for a hot-start.
Abstract A detailed model of a post-combustion CO2 capture plant (pcc-plant) is developed in the Modelica® language which allows the simulation of start-up and shutdown processes. The model of the pcc-plant is coupled to a simplified model of a coal fired power plant to investigate the coupled process. To guarantee a stable and automatic operation, a sequential control for start-up and shutdown procedures is implemented in both plants. Two case studies, focussing on the pcc-plant, are subsequently performed in this contribution. In the first case study, the influence of different parameters and input variables on the start-up time is investigated in order to analyze the start-up process of the pcc-plant. The varied variables are the steam flow rate to the reboiler, the solvent flow rate and the total amount of solvent in the pcc-plant. In the second case study two different start-up control structures for the carbon capture plant are proposed and their performances are presented and compared.
Modeling and simulation of the start-up process of coal fired power plants with post-combustion CO2 capture
Highlights A model of a coal fired power plant coupled to a post-combustion capture plant to study the start-up process is presented. A sequence control is combined with suitable control structures to achieve an automatic start-up of the process. The start-up results show that the total start-up time of the capture plant is 2.54 h for a hot-start.
Abstract A detailed model of a post-combustion CO2 capture plant (pcc-plant) is developed in the Modelica® language which allows the simulation of start-up and shutdown processes. The model of the pcc-plant is coupled to a simplified model of a coal fired power plant to investigate the coupled process. To guarantee a stable and automatic operation, a sequential control for start-up and shutdown procedures is implemented in both plants. Two case studies, focussing on the pcc-plant, are subsequently performed in this contribution. In the first case study, the influence of different parameters and input variables on the start-up time is investigated in order to analyze the start-up process of the pcc-plant. The varied variables are the steam flow rate to the reboiler, the solvent flow rate and the total amount of solvent in the pcc-plant. In the second case study two different start-up control structures for the carbon capture plant are proposed and their performances are presented and compared.
Modeling and simulation of the start-up process of coal fired power plants with post-combustion CO2 capture
Marx-Schubach, Thomas (Autor:in) / Schmitz, Gerhard (Autor:in)
International Journal of Greenhouse Gas Control ; 87 ; 44-57
03.05.2019
14 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| DataCite | 2019