A high-efficiency novel IGCC-OTM carbon capture power plant design

Journal of advanced manufacturing and processing Pub Date : 2020-06-09 DOI:10.1002/amp2.10059

Xiao-Yu Wu, Lili Cai, Xuefeng Zhu, Ahmed F. Ghoniem, Weishen Yang

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引用次数: 10

Abstract

Coal power plants play an important role in supplying affordable and reliable electricity. It is necessary to develop high-efficiency and low-cost carbon capture (CC) technologies to mitigate the associated global warming. Using H₂S-tolerant oxygen transport membranes (OTMs) for hydrogen production and CO₂ separation can significantly reduce the energy penalty of CC in integrated gasification combined cycle (IGCC) power plants. We carried out system-level analysis to investigate a novel IGCC-CC power plant design using OTMs. We studied the impacts of various operating parameters on the overall efficiency and energy penalty. This novel IGCC-OTM system has an overall efficiency 3.2%-point lower than the same system without CC, much lower than the IGCC with water-gas shift reactors and acid gas removal units (IGCC-WGS) of 6.8%-point drop. The specific primary energy consumption for CO₂ avoided (SPECCA) of this novel technology is 1.08 MJ kgCO₂⁻¹, which is 59.4% lower than that of the IGCC-WGS.

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一种高效新型IGCC-OTM碳捕获发电厂设计

煤电厂在提供负担得起和可靠的电力方面发挥着重要作用。有必要开发高效、低成本的碳捕获技术来缓解相关的全球变暖。在整体煤气化联合循环（IGCC）发电厂中，使用耐H2S的氧气输送膜（OTM）进行氢气生产和CO2分离可以显著降低CC的能量损失。我们进行了系统级分析，以研究一种使用OTM的新型IGCC-C发电厂设计。我们研究了各种操作参数对整体效率和能量损失的影响。这种新型IGCC-OTM系统的总效率比没有CC的相同系统低3.2%，比具有水煤气变换反应器和酸性气体去除装置（IGCC-WGS）的IGCC低6.8%。该新技术的CO2避免比一次能耗（SPECCA）为1.08 MJ kgCO2−1，比IGCC-WGS低59.4%。

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