Mr. Xuesheng Wang Profile

Xuesheng Wang

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Proceedings Article | 19 June 2024 Paper

Study on the mixing effect of gas-liquid mixing device for continuous reforming tube-wound heat exchanger

Zhiqing Li, Xuesheng Wang, Qinzhu Chen

Proceedings Volume 13172, 1317206 (2024) https://doi.org/10.1117/12.3032223

KEYWORDS: Nozzles, Liquids, Particles, Turbulence, Pipes, Numerical simulations, Phase distribution, Mixtures, Hydrogen, Crystallization

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Tube-wound heat exchanger is one of the key equipment in continuous reformer, and the effect of gas-liquid mixing between naphtha and hydrogen will affect the degree of crystallization and blockage in the tube. At present, the in-service reforming tube-wound heat exchanger is unevenly mixed with gas and liquid, and the crystallization and blockage in the tubes cause problems such as increased pressure drop in the tubes and poor heat transfer efficiency. In this paper, on the basis of the original structure of the heat exchanger gas-liquid mixing hole injection method, the nozzle structure atomization method is introduced for gas-liquid material mixing, and the gas-liquid mixing effect of the two structures are compared. By means of CFD numerical analysis, the influence of different structures on the gas-liquid mixing effect was comparatively studied. The results show that the gas-liquid mixing effect of the horizontal nozzle is better than that of the round hole structure, and the larger the nozzle facing angle, the worse the gas-liquid homogeneity is, and the relevant results can provide certain guidance for the overall optimization of the continuous reforming device.

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