Thermodynamic performance study of the CLHG/MCFC combined cycle system with CO2 recovery

IF 6 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2026-10-01 Epub Date: 2026-07-15 DOI:10.1016/j.ceramint.2026.07.240

Qiujie Cheng, Yunlong Zhou, Mei Yang

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引用次数: 0

Abstract

Molten carbonate fuel cells have the advantages of flexible fuel, high power generation efficiency, and a strong ability to realize CO₂ capture, which can be combined with the chemical chain hydrogen cycle to realize the integration of hydrogen production and CO₂ separation. In this paper, we propose a novel hybrid power system based on the combination of chemical chain hydrogen production and fuel cell, which can realize hydrogen production, power generation, CO₂ separation, and storage. We utilize the reaction mechanism of a molten carbonate a fuel cell to capture CO₂ and combine it with a CO₂ compression and storage system to reduce the carbon emissions of the integrated system. The system was analyzed for sensitivity, energy, and exergy. The results show that the carbon monomer generation becomes zero when the fuel stack temperature exceeds 943 K and the oxygen carrier to fuel flow ratio is 1.25. The system's output power was 382.6 kW, and the power generation efficiency was 52.48%, which is 3.98% higher compared to the fuel cell power generation system alone. The fuel cell has the highest exergy destruction of 167.63 kW in the whole system. The results of the study can provide ideas for the design of a carbon capture system.

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CO2回收CLHG/MCFC联合循环系统热力学性能研究

熔融碳酸盐燃料电池具有燃料灵活、发电效率高、实现CO2捕集能力强等优点，可与化学链氢循环相结合，实现制氢与CO2分离一体化。本文提出了一种基于化学链制氢与燃料电池相结合的新型混合动力系统，可实现制氢、发电、CO2分离和存储。我们利用熔融碳酸盐在燃料电池中的反应机制来捕获二氧化碳，并将其与二氧化碳压缩和储存系统相结合，以减少集成系统的碳排放。对该系统进行了灵敏度、能量和火用分析。结果表明：当燃料堆温度超过943 K，载氧比为1.25时，碳单体生成为零；系统输出功率为382.6 kW，发电效率为52.48%，比单独使用燃料电池发电系统提高3.98%。燃料电池在整个系统中具有最高的167.63 kW的火用破坏。研究结果可以为碳捕获系统的设计提供思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.