Effect of adjusted mesoscale drag model on flue gas desulfurization in powder-particle spouted beds

Xinxin Che, Feng Wu, Xiaoxun Ma

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Front. Chem. Sci. Eng. ›› 2022, Vol. 16 ›› Issue (6) : 909-920. DOI: 10.1007/s11705-021-2100-8
RESEARCH ARTICLE

Effect of adjusted mesoscale drag model on flue gas desulfurization in powder-particle spouted beds

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Abstract

An energy minimum multiscale model was adjusted to simulate the mesoscale structure of the flue gas desulfurization process in a powder-particle spouted bed and verified experimentally. The obtained results revealed that the spout morphology simulated by the adjusted mesoscale drag model was unstable and discontinuous bubbling spout unlike the stable continuous spout obtained using the Gidaspow model. In addition, more thorough gas radial mixing was achieved using the adjusted mesoscale drag model. The mass fraction of water in the gas mixture at the outlet determined by the heterogeneous drag model was 1.5 times higher than that obtained by the homogeneous drag model during the simulation of water vaporization. For the desulfurization reaction, the experimental desulfurization efficiency was 75.03%, while the desulfurization efficiencies obtained by the Gidaspow and adjusted mesoscale drag models were 47.63% and 75.08%, respectively, indicating much higher accuracy of the latter technique.

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Keywords

adjusted mesoscale drag model / particle image velocimetry / water vaporization / desulfurization reaction / numerical simulation

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Xinxin Che, Feng Wu, Xiaoxun Ma. Effect of adjusted mesoscale drag model on flue gas desulfurization in powder-particle spouted beds. Front. Chem. Sci. Eng., 2022, 16(6): 909‒920 https://doi.org/10.1007/s11705-021-2100-8

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Acknowledgment

This work is supported by the National Natural Science Foundation of China (Grant No. 21878245).

Electronic Supplementary Material

Supplementary material is available in the online version of this article at https://dx.doi.org/10.1007/s11705-021-2100-8 and is accessible for authorized users.

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