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Eulerian–Eulerian Numerical Study of the Flue Gas Desulfurization Process in a Semidry Spouted Bed Reactor

[Image: see text] The Eulerian–Eulerian two-fluid model (TFM) in conjunction with kinetic theory of granular flows (KTGF) was used for analyzing water vaporization and the semidry flue gas desulfurization process in a two-dimensional powder–particle spouted bed (PPSB). In an environment with high-te...

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Autores principales: Wu, Feng, Bai, Jinhao, Yue, Kai, Gong, Ming, Ma, Xiaoxun, Zhou, Wenjing
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7045319/
https://www.ncbi.nlm.nih.gov/pubmed/32118143
http://dx.doi.org/10.1021/acsomega.9b03361
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author Wu, Feng
Bai, Jinhao
Yue, Kai
Gong, Ming
Ma, Xiaoxun
Zhou, Wenjing
author_facet Wu, Feng
Bai, Jinhao
Yue, Kai
Gong, Ming
Ma, Xiaoxun
Zhou, Wenjing
author_sort Wu, Feng
collection PubMed
description [Image: see text] The Eulerian–Eulerian two-fluid model (TFM) in conjunction with kinetic theory of granular flows (KTGF) was used for analyzing water vaporization and the semidry flue gas desulfurization process in a two-dimensional powder–particle spouted bed (PPSB). In an environment with high-temperature gas, desulfurization slurry is wrapped on the surface of moving particles and evaporated, along with the application of the user defined function (UDF) method to accomplish water heat and mass transfer by considering evaporation in the simulation process. The simulation results revealed that the best mass- and heat-transfer effect of each phase can be found in the outer annulus and the near spout region, both of which are also the main areas where water vaporization occurs. The rate of desulfurization products decreases with the increase in inlet gas temperature as the water vaporization rate increases. The volume fraction of desulfurization reaction products decreases with the increase in inlet flue gas temperature. Compared with other working conditions, the highest desulfurization efficiency reaches 84% when the inlet flue gas temperature is 480 K. The change of the desulfurization product rate with the radial distance is the same under different superficial gas velocities, with the peak desulfurization efficiency appearing in the annulus. The optimal operating parameter for the desulfurization process is available in PPSB, and the desulfurization efficiency and gas handling capacity reach the best result when the superficial gas velocity equals 1.2 U(ms).
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spelling pubmed-70453192020-02-28 Eulerian–Eulerian Numerical Study of the Flue Gas Desulfurization Process in a Semidry Spouted Bed Reactor Wu, Feng Bai, Jinhao Yue, Kai Gong, Ming Ma, Xiaoxun Zhou, Wenjing ACS Omega [Image: see text] The Eulerian–Eulerian two-fluid model (TFM) in conjunction with kinetic theory of granular flows (KTGF) was used for analyzing water vaporization and the semidry flue gas desulfurization process in a two-dimensional powder–particle spouted bed (PPSB). In an environment with high-temperature gas, desulfurization slurry is wrapped on the surface of moving particles and evaporated, along with the application of the user defined function (UDF) method to accomplish water heat and mass transfer by considering evaporation in the simulation process. The simulation results revealed that the best mass- and heat-transfer effect of each phase can be found in the outer annulus and the near spout region, both of which are also the main areas where water vaporization occurs. The rate of desulfurization products decreases with the increase in inlet gas temperature as the water vaporization rate increases. The volume fraction of desulfurization reaction products decreases with the increase in inlet flue gas temperature. Compared with other working conditions, the highest desulfurization efficiency reaches 84% when the inlet flue gas temperature is 480 K. The change of the desulfurization product rate with the radial distance is the same under different superficial gas velocities, with the peak desulfurization efficiency appearing in the annulus. The optimal operating parameter for the desulfurization process is available in PPSB, and the desulfurization efficiency and gas handling capacity reach the best result when the superficial gas velocity equals 1.2 U(ms). American Chemical Society 2020-02-13 /pmc/articles/PMC7045319/ /pubmed/32118143 http://dx.doi.org/10.1021/acsomega.9b03361 Text en Copyright © 2020 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Wu, Feng
Bai, Jinhao
Yue, Kai
Gong, Ming
Ma, Xiaoxun
Zhou, Wenjing
Eulerian–Eulerian Numerical Study of the Flue Gas Desulfurization Process in a Semidry Spouted Bed Reactor
title Eulerian–Eulerian Numerical Study of the Flue Gas Desulfurization Process in a Semidry Spouted Bed Reactor
title_full Eulerian–Eulerian Numerical Study of the Flue Gas Desulfurization Process in a Semidry Spouted Bed Reactor
title_fullStr Eulerian–Eulerian Numerical Study of the Flue Gas Desulfurization Process in a Semidry Spouted Bed Reactor
title_full_unstemmed Eulerian–Eulerian Numerical Study of the Flue Gas Desulfurization Process in a Semidry Spouted Bed Reactor
title_short Eulerian–Eulerian Numerical Study of the Flue Gas Desulfurization Process in a Semidry Spouted Bed Reactor
title_sort eulerian–eulerian numerical study of the flue gas desulfurization process in a semidry spouted bed reactor
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7045319/
https://www.ncbi.nlm.nih.gov/pubmed/32118143
http://dx.doi.org/10.1021/acsomega.9b03361
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