Assessment of CO2 enrichment mechanism in integrated coal gasification fuel cell combined cycle system with carbon capture
The present research proposes an innovative multi-physics coupled model of different configurations of an integrated coal gasification fuel cell combined cycle (IGFC) system employing Solid Oxide Electrolytic Cell (SOEC) for CO2 capture. Full-system simulation is carried out to examine efficiency. T...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-01-01
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| Series: | Frontiers in Energy Research |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenrg.2022.1017829/full |
| _version_ | 1797960162999271424 |
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| author | Yuan Wang Chengru Wu Yang Wang Zhibin Yang Qing Du Kui Jiao Kui Jiao |
| author_facet | Yuan Wang Chengru Wu Yang Wang Zhibin Yang Qing Du Kui Jiao Kui Jiao |
| author_sort | Yuan Wang |
| collection | DOAJ |
| description | The present research proposes an innovative multi-physics coupled model of different configurations of an integrated coal gasification fuel cell combined cycle (IGFC) system employing Solid Oxide Electrolytic Cell (SOEC) for CO2 capture. Full-system simulation is carried out to examine efficiency. The model incorporates a Solid Oxide Fuel Cell (SOFC), a SOEC, a gas turbine (GT), and multiple recirculation loops operated by two ejectors. The results reveal that compared with traditional power plants, the proposed IGFC system equipped with SOEC can reduce CO2 emission by almost 80%, and operates environmentally beneficial. The efficiency of the system varies greatly depending on the design parameters implemented. The CO2 enrichment phenomenon by SOFC and capture measures of CO2 by SOEC are simultaneously analyzed. In addition, parametric analysis is performed to evaluate the coupling influence of multiple operating parameters on the IGFC system. Recirculation ratios of 0.75 with four times recirculations are found to be the optimal conditions for both SOFC fuel electrode and SOEC air electrode aimed at getting to the highest power generation efficiency and total CO2 capture rate of the system. After systematic optimization of the design parameters, the electrical efficiency and CO2 capture rate of the proposed system could achieve 68.47% and 87.88%, respectively, which are about 20% and 60% greater than those of traditional power plants. Furthermore, after optimizing the control strategy, the fuel utilization rate of the system increases from 63.09% to 83.40%. |
| first_indexed | 2024-04-11T00:42:00Z |
| format | Article |
| id | doaj.art-f3e40ff1b87c4efd9c14dd1539ab8250 |
| institution | Directory Open Access Journal |
| issn | 2296-598X |
| language | English |
| last_indexed | 2024-04-11T00:42:00Z |
| publishDate | 2023-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Energy Research |
| spelling | doaj.art-f3e40ff1b87c4efd9c14dd1539ab82502023-01-06T05:15:46ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2023-01-011010.3389/fenrg.2022.10178291017829Assessment of CO2 enrichment mechanism in integrated coal gasification fuel cell combined cycle system with carbon captureYuan Wang0Chengru Wu1Yang Wang2Zhibin Yang3Qing Du4Kui Jiao5Kui Jiao6State Key Laboratory of Engines, Tianjin University, Tianjin, ChinaState Key Laboratory of Engines, Tianjin University, Tianjin, ChinaState Key Laboratory of Engines, Tianjin University, Tianjin, ChinaResearch Center of Solid Oxide Fuel Cell, China University of Mining and Technology, Beijing, ChinaState Key Laboratory of Engines, Tianjin University, Tianjin, ChinaState Key Laboratory of Engines, Tianjin University, Tianjin, ChinaNational Industry-Education Platform of Energy Storage, Tianjin University, Tianjin, ChinaThe present research proposes an innovative multi-physics coupled model of different configurations of an integrated coal gasification fuel cell combined cycle (IGFC) system employing Solid Oxide Electrolytic Cell (SOEC) for CO2 capture. Full-system simulation is carried out to examine efficiency. The model incorporates a Solid Oxide Fuel Cell (SOFC), a SOEC, a gas turbine (GT), and multiple recirculation loops operated by two ejectors. The results reveal that compared with traditional power plants, the proposed IGFC system equipped with SOEC can reduce CO2 emission by almost 80%, and operates environmentally beneficial. The efficiency of the system varies greatly depending on the design parameters implemented. The CO2 enrichment phenomenon by SOFC and capture measures of CO2 by SOEC are simultaneously analyzed. In addition, parametric analysis is performed to evaluate the coupling influence of multiple operating parameters on the IGFC system. Recirculation ratios of 0.75 with four times recirculations are found to be the optimal conditions for both SOFC fuel electrode and SOEC air electrode aimed at getting to the highest power generation efficiency and total CO2 capture rate of the system. After systematic optimization of the design parameters, the electrical efficiency and CO2 capture rate of the proposed system could achieve 68.47% and 87.88%, respectively, which are about 20% and 60% greater than those of traditional power plants. Furthermore, after optimizing the control strategy, the fuel utilization rate of the system increases from 63.09% to 83.40%.https://www.frontiersin.org/articles/10.3389/fenrg.2022.1017829/fullIGFChybrid systemCO2 enrichmentrecirculationCO2 capture |
| spellingShingle | Yuan Wang Chengru Wu Yang Wang Zhibin Yang Qing Du Kui Jiao Kui Jiao Assessment of CO2 enrichment mechanism in integrated coal gasification fuel cell combined cycle system with carbon capture Frontiers in Energy Research IGFC hybrid system CO2 enrichment recirculation CO2 capture |
| title | Assessment of CO2 enrichment mechanism in integrated coal gasification fuel cell combined cycle system with carbon capture |
| title_full | Assessment of CO2 enrichment mechanism in integrated coal gasification fuel cell combined cycle system with carbon capture |
| title_fullStr | Assessment of CO2 enrichment mechanism in integrated coal gasification fuel cell combined cycle system with carbon capture |
| title_full_unstemmed | Assessment of CO2 enrichment mechanism in integrated coal gasification fuel cell combined cycle system with carbon capture |
| title_short | Assessment of CO2 enrichment mechanism in integrated coal gasification fuel cell combined cycle system with carbon capture |
| title_sort | assessment of co2 enrichment mechanism in integrated coal gasification fuel cell combined cycle system with carbon capture |
| topic | IGFC hybrid system CO2 enrichment recirculation CO2 capture |
| url | https://www.frontiersin.org/articles/10.3389/fenrg.2022.1017829/full |
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