Different compression-train configurations in a coal-fired power plant with CO₂ capture were thermally integrated to reduce the energetic impact of the capture process and global warming potential for the life cycle of the power plant and the production of the absorbent. The thermal integration was performed using formal optimization techniques, with consideration given to all the available streams for the different compression-train configurations. The different compression-train configurations produced different temperature levels in the process streams and different heat exchanger networks, which included the power plant, compression train, and waste energy recovery technologies, such as organic Rankine cycles. The initial observation was that for the different configurations of the compression trains, the best result in terms of the net power output was 374.26 MW_e, with a reduction of 84.3% in the global warming potential compared with a power plant without carbon capture. This result was obtained for an eight-stage train with integrally geared centrifugal compressors. Subsequently, with thermal integration, the configuration that included advanced supersonic shockwave compressors exhibited the best conditions for the heat transfer between hot and cold streams, achieving a reduction of 84.65% in the global warming potential and a net power output of 382.9 MW_e.

Graphic abstract

中文翻译：

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具有碳捕获功能的燃煤电厂不同压缩系统配置的热整合

_{具有 CO 2}的燃煤电厂的不同压缩系统配置捕集被热整合以减少捕集过程的能量影响和全球变暖潜力对发电厂生命周期和吸收剂生产的影响。热整合是使用形式优化技术进行的，并考虑了不同压缩系配置的所有可用流。不同的压缩系统配置在工艺流和不同的热交换器网络中产生不同的温度水平，其中包括发电厂、压缩系统和废物能量回收技术，例如有机朗肯循环。最初的观察是，对于不同配置的压缩列车，净功率输出的最佳结果是 374.26 MW _e，与没有碳捕获的发电厂相比，全球变暖潜能值降低了 84.3%。该结果是针对带有一体式齿轮离心压缩机的八级列车获得的。随后，通过热整合，包括先进的超音速冲击波压缩机的配置展现了冷热流之间的最佳传热条件，实现了全球变暖潜势降低 84.65% 和 382.9 MW _e的净功率输出。

图形摘要