Abstract
The volatile organic compounds (VOCs) are important precursors of ozone and PM2.5. VOCs emission reduction plays an important role in carbon emission and environmental protection. For high-value VOCs such as organic solvents, the cryogenic condensation using liquid nitrogen is an effective VOCs recovery method that can satisfy the emission standard with a low refrigeration temperature of −180 ℃ or even lower. In this paper, in order to explore the VOCs condensation and frosting in the heat exchanger for improving the heat transfer efficiency, a set of visualization experimental equipment for VOCs condensation recovery based on liquid nitrogen cooling was designed, established, and tested. Several windows are set on the heat exchanger shell to observe the process of condensation and even frosting inside the heat exchanger and the distribution of liquid film and frost layer. Experiments and analyses were carried out under different working conditions such as the effect of VOCs concentration, gas flowrate, refrigeration temperature, and other influencing factors.
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Acknowledgments
This research is supported by the Key Research Program of Frontier Sciences, Chinese Academy of Sciences (No. QYZDY-SSW-JSC028), Youth Innovation Promotion Association of the Chinese Academy of Sciences (No. 2019030), and the Foundation of the Director of the Technical Institute of Physics and Chemistry, Chinese Academy of Sciences (No. 210416).
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Xu, H., Xu, X., Chen, L., Guo, J., Wang, J. (2023). Experimental Study on Condensation Characteristics of Volatile Organic Compounds. In: Qiu, L., Wang, K., Ma, Y. (eds) Proceedings of the 28th International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2022. ICEC28-ICMC 2022. Advanced Topics in Science and Technology in China, vol 70. Springer, Singapore. https://doi.org/10.1007/978-981-99-6128-3_69
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DOI: https://doi.org/10.1007/978-981-99-6128-3_69
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