Experimental study of hydrodynamics and thermal behavior of a pseudo‐2D spout‐fluidized bed with liquid injection

Experimental study of hydrodynamics and thermal behavior of a pseudo‐2D spout‐fluidized bed with liquid injection
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注液拟二维喷流流化床流体动力学及热行为实验研究

DOI:
10.1002/aic.14719
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发表时间:
2015
期刊:
影响因子:
3.7
通讯作者:
S. Heinrich
S. Heinrich
中科院分区:
工程技术3区
文献类型:
--
作者:
V.S. Sutkar;N.G. Deen;A.V. Patil;E.A.J.F. Peters;J.A.M. Kuipers;V. Salikov;S. Antonyuk;S. Heinrich

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提出了一种新的非侵入式技术,通过同时捕获可见光和红外图像来研究具有液体喷射的气固喷动流化床的流体动力学和热行为。在带有填充有玻璃或γ-氧化铝颗粒的导流板的伪二维床中进行实验,以研究液体注入和颗粒性质对流动特性的影响。对于干燥和潮湿条件下的玻璃颗粒,时间平均颗粒速度显示出类似的准稳态行为。然而,在潮湿的条件下,较低的颗粒速度观察到在喷口和环空相比,干系统。而γ-氧化铝颗粒在干、湿条件下的颗粒速度变化不大,在较高的液体注入速率下颗粒速度变化很好。此外,对于玻璃颗粒,与γ-氧化铝颗粒相比,颗粒温度显著降低。© 2015美国化学工程师学会AIChE J,61:1146-1159,2015
A novel nonintrusive technique is presented to investigate hydrodynamic and thermal behavior of gas–solid spout‐fluidized beds with liquid injection, by simultaneously capturing visual and infrared images. Experiments were performed in a pseudo‐2D bed with draft plates filled with glass or γ‐alumina particles to investigate the effect of liquid injection and particle properties on the flow characteristics. For the glass particles under dry and wet conditions, time‐averaged particle velocities show similar quasi‐steady‐state behavior. However, under wet conditions, lower particle velocities were observed in both spout and annulus as compared with the dry system. Whereas, γ‐alumina particles do not show considerable variation in the particle velocities under dry and wet conditions and fluidize well at higher liquid injection rates. Additionally, for the glass particles, the particle temperature significantly decreases as compared to the γ‐alumina particles. © 2015 American Institute of Chemical EngineersAIChE J, 61: 1146–1159, 2015
喷动流化床技术
DOI: 10.1021/i260034a032
发表时间: 1970
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