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化工学报  2015 

气固两相流穿越液池过程颗粒运动及分布特性

DOI: 10.11949/j.issn.0438-1157.20141596, PP. 905-914

Keywords: 液池,多相流,分布,数值模拟

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Abstract:

为了揭示气固两相流穿越液池过程中的气液固三相流动特性,建立了气液固三相实验平台和基于Euler-Lagrange框架下的数值模拟平台,对该过程中的气液固三相流动过程及颗粒运动分布规律进行研究。获得了5~15μm、80~110μm和380~530μm3种典型粒径颗粒在三相体系中的微观运动过程及其分布规律。实验与数值模拟结果均能反映出一致的客观规律。研究发现,颗粒浓度沿液池高度方向和径向均呈现多峰分布特征;5~15μm粒径颗粒更易跟随气体一起穿越液池,其在液池内的浓度分布较为均匀;380~530μm粒径颗粒与气体的跟随性较差,其浓度峰值主要集中在液池底部。随着下降管出口静态浸没深度的增加,液池内颗粒浓度分布趋于平缓。

References

[1]  Wang Fuchen (王辅臣), Yu Guangsuo (于广锁), Gong Xin (龚欣), et al. Research and development of large-scale coal gasification technology [J]. Chemical Industry and Engineering Progress (化工进展), 2009, 28 (2): 173-180
[2]  Jiang Han (江瀚), Liu Zhongliang (刘中良), Gong Xiaolong (宫小龙). Thermal economics and application of pressurized submerged combustion evaporators [J]. CIESC Journal (化工学报), 2011, 62 (12): 3498-3502
[3]  Vaibhav K A, Ashwani K G. Jet characteristics from a submerged combustion system [J]. Applied Energy, 2012, 89: 246-253
[4]  Wang Rongdong (王荣东), Du Hai'ou (杜海鸥), Gao Yaopeng (高耀鹏), et al. The experimental study on sodium aerosol removal efficiency of water bath scrubber [J]. Nuclear Science and Engineering (核科学与工程), 2012, 32 (4): 319-325
[5]  Wu Xuan (吴晅), Gao Huijie (高慧杰), Li Haiguang (李海广), Wu Wenfei (武文斐). Bubble characteristics of syngas during passing through cistern in gasifier [J]. Journal of Chinese Society of Power Engineering (动力工程学报), 2013, 33 (12): 972-968
[6]  Fu Bihua (付碧华), Wang Yifei (王亦飞), Lin Lan (林岚), Xu Jianliang (许建良), et al. Penetration depth and characteristics of interface fluctuation at quenching pipe outlet [J]. CIESC Journal (化工学报), 2011, 62 (7): 1817-1823
[7]  He Biyun (贺必云). Study on multiphase flow characteristics of the new type of scrubbing-cooling chamber [D]. Shanghai: East China University of Science & Technology, 2005: 11-19
[8]  Xu Yonggui, Liu Mingyan, Tang Can. Three-dimensional CFD-VOF-DPM simulations of effects of low-holdup particles on single-nozzle bubbling behavior in gas-liquid-solid systems [J]. Chemical Engineering Journal, 2013, 222: 292-306
[9]  Baltussen M W, Seelen L J H, Kuipers J A M, Deen N G. Direct numerical simulations of gas-liquid-solid three phase flows [J]. Chemical Engineering Science, 2013, 100: 293-299
[10]  Chen Min (陈敏), Yuan Zhulin (袁竹林), Gao Shiwang (郜时旺). Direct numerical simulation and experimental contrast of the moving granular bed dust filter [J]. Proceedings of the CSEE (中国电机工程学报), 2003, 23 (11): 195-199
[11]  Cai Guiying (蔡桂英), Yuan Zhulin (袁竹林). A study on the filtration performance of ceramic filter by numerical simulation [J]. Proceedings of the CSEE (中国电机工程学报), 2003, 23 (12): 203-207
[12]  Brackbill J U. A continuum method for modeling surface tension [J]. Journal of Computational Physics, 1992, 100 (3): 335-354
[13]  Ouyang J, Li J H. Particle-motion-resolved discrete model for simulating gas-solid fluidization [J]. Chemical Engineering Science, 1999, 54 (13): 2077-2083
[14]  Tsuji Y, Tanaka T. Cluster patterns in circulating fluidized beds predicted by numerical simulation (discrete particle model versus two-fluid model) [J]. Powder Technology, 1998, 95 (3): 254-264
[15]  Rouhani S Z. Two-phase flow patterns: a review of research results [J]. Progress in Nuclear Energy, 1983, 11 (3): 219-259
[16]  Wu Xuan (吴晅), Wang Lifang (王丽芳), Gao Huijie (高慧杰), et al. Numerical simulation of the initial impact behavioral characteristics during top-submerged gas injection [J]. Boiler Technology (锅炉技术), 2013, 44 (3): 1-5
[17]  Xiong Y Q, Zhang M Y, Yuan Z L. Three-dimensional numerical simulation method for gas-solid injector [J]. Powder Technology, 2005, 160 (2): 180-189
[18]  Kafui K D, Thornton C, Adams M J. Discrete particle-continuum fluid modeling of gas-solid fluidized beds [J]. Chemical Engineering Science, 2002, 57 (13): 2395-2410
[19]  Zou L M, Guo Y C, Chan C K. Cluster-based drag coefficient model for simulating gas-solid flow in a fast-fluidized bed [J]. Chemical Engineering Science, 2008, 63 (4): 1052-1061
[20]  Zhang Jianping, Fan L S, Chou Zhu, et al. Dynamic behavior of collision of elastic spheres in viscous fluids [J]. Powder Technology, 1999, 106 (1/2): 98-109
[21]  Zhang Jianping, Li Yong, Fan Liang-Shih. Discrete phase simulation of gas-liquid-solid fluidization systems: single bubble rising behavior [J]. Powder Technology, 2000, 113 (3): 310-326
[22]  Li Jinghai (李静海), Ouyang Jie (欧阳洁), Gao Shiqiu (高士秋), et al. Multi-scale Simulation of Complex System of Particle Fluid (颗粒流体复杂系统的多尺度模拟) [M]. Beijing: Science Press, 2005: 221

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