Abstract Porous ceramic membrane can effectively capture water vapor from flue gas. In this paper, the transport membrane condenser (TMC) is manufactured using microporous ceramic membranes with a pore size of 0.4 nm, and its feasibility to capture water vapor is verified on a gas-fired boiler experimental platform. The water vapor capture mechanism of microporous ceramic membrane is analyzed by designing different experiments under different operating conditions and different operating modes. According to the results, film condensation is the main capture mechanism; under the action of Knudsen diffusion mechanism, the microporous ceramic membrane can capture water vapor, but the capture flux is very small; no capillary condensation occurs in the pores of microporous ceramic membrane. Based on laboratory-scale research, a pilot-scale experimental platform is set up to test water vapor capture performance in the coal-fired power plants. The pilot-scale testing result further demonstrates the feasibility of capturing water vapor with microporous ceramic membrane, which greatly expands the selection range of materials used to manufacture TMC.

中文翻译：

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使用微孔陶瓷膜捕获水蒸气

摘要 多孔陶瓷膜可以有效地捕获烟气中的水蒸气。在本文中，传输膜冷凝器（TMC）使用孔径为0.4 nm的微孔陶瓷膜制造，并在燃气锅炉实验平台上验证了其捕获水蒸气的可行性。通过设计不同工况、不同工况下的不同实验，分析了微孔陶瓷膜的水蒸气捕获机理。结果表明，薄膜凝结是主要的捕获机制；在克努森扩散机制的作用下，微孔陶瓷膜可以捕获水蒸气，但捕获通量很小；微孔陶瓷膜的孔内不发生毛细冷凝现象。基于实验室规模的研究，建立了一个中试实验平台，以测试燃煤电厂的水蒸气捕获性能。中试测试结果进一步证明了微孔陶瓷膜捕获水蒸气的可行性，大大扩展了制造TMC材料的选择范围。