梯形移动床径向反应器内颗粒的贴壁现象分析

doi:10.3969/j.issn.0438-1157.2014.04.004

化工学报 ›› 2014, Vol. 65 ›› Issue (4): 1179-1185.DOI: 10.3969/j.issn.0438-1157.2014.04.004

梯形移动床径向反应器内颗粒的贴壁现象分析

龙文宇^1,2, 徐军¹, 范怡平¹, 卢春喜¹

1 中国石油大学（北京）化工学院, 北京 102249;
2 辽宁石油化工大学石化学院, 辽宁抚顺 113001

收稿日期:2013-07-12 修回日期:2013-12-12 出版日期:2014-04-05 发布日期:2014-04-05
通讯作者: 范怡平
作者简介:龙文宇（1978—），男，博士研究生，讲师。
基金资助:
国家重点基础研究发展计划项目（2012CB215000）。

Phenomenon of pinning in trapezoidal moving beds with cross-flow

LONG Wenyu^1,2, XU Jun¹, FAN Yiping¹, LU Chunxi¹

1 College of Chemical Engineering, China University of Petroleum, Beijing 102249, China;
2 College of Petrochemical Engineering, Liaoning Shihua University, Fushun 113001, Liaoning, China

Received:2013-07-12 Revised:2013-12-12 Online:2014-04-05 Published:2014-04-05
Supported by:
supported by the National Basic Research Program of China(2012CB215000).

摘要/Abstract

摘要： 贴壁现象是制约移动床反应器操作弹性的瓶颈之一。在高度为1.3 m、顶部宽度为0.185 m、底部宽度为0.299 m、厚度为0.04 m的梯形径向移动床冷模实验装置上考察了颗粒层的贴壁现象。记录不同的操作条件下，贴壁与空腔现象产生的位置及形状大小，并测量了气体通过床层的压降。随着表观气速的增加，贴壁层变厚，空腔变大，呈现为渐进型贴壁；而颗粒循环强度对贴壁与空腔现象无影响。通过力平衡分析建立了梯形床贴壁现象的数学模型，引入矫正因子对模型进行修正，模型计算值与实验值基本相符。

关键词: 移动床, 贴壁, 颗粒物料, 粉体技术, 模型

Abstract: Pinning phenomenon is a bottleneck constraining operation flexibility of moving bed reactor. Pinning phenomenon and pressure drop were investigated in a trapezoidal cross-flow moving bed model under different operating conditions. The trapezoidal bed model was 1.3 m in height and 0.185 m in top width while 0.299 m in bottom width, the distance between two perspex plates was 0.04 m. Experiments results indicated that pinning appeared before formation of cavity. Pinning thickness and cavity size increased with increasing superficial gas velocity. Their variation with particles mass flux was not evident. Base on the force balance, a mathematical model of pinning was established. The critical pressure drop and pinning thickness could be predicted by this model. The calculation results agreed basically with the experimental data.

Key words: moving bed, pinning, granular materials, powder technology, model

中图分类号:

TQ051

龙文宇, 徐军, 范怡平, 卢春喜. 梯形移动床径向反应器内颗粒的贴壁现象分析[J]. 化工学报, 2014, 65(4): 1179-1185.

LONG Wenyu, XU Jun, FAN Yiping, LU Chunxi. Phenomenon of pinning in trapezoidal moving beds with cross-flow[J]. CIESC Journal, 2014, 65(4): 1179-1185.

参考文献

[1] Zhang Shifang(张世方). Catalytic reforming process technology development[J]. Sino-global Energy(中外能源), 2012, 17(6): 60-65
[2] Wang Jianming(王建明). Development of catalytic cracking to produce low carbon olefins and its commercialization[J]. Chemical Industry and Engineering Progress(化工进展), 2011, 30(5):911-917
[3] Tallman M J, Eng C, Choi S, Park D S. Naphtha cracking for light olefins production[J]. Petroleum Technology Quarterly, 2010, 15(4): 87-91
[4] Bridgewater J. The influence of fluid flow on slope stability[J]. Powder Technology, 1975, 11(2):199-201
[5] Ginestra J C, Jackson R. Pinning of a bed of particles in a vertical channel by a cross flow of gas[J]. Industrial & Engineering Chemistry Fundamentals, 1985, 24(2):121-128
[6] Doyle III F J, Jackson R, Ginestra J C. The phenomenon of pinning in an annular moving bed reactor with crossflow of gas[J]. Chemical Engineering Science, 1986, 41(6):1485-1495
[7] Tsubaki J, Tien C. Solid velocity in cross-flow moving beds[J]. Powder Technology, 1987, 53(2):105-112
[8] Pilcher K A, Bridgwater J. Pinning in a rectangular moving bed reactor with gas cross-flow[J]. Chemical Engineering Science, 1990, 45(8):2535-2542
[9] Wang Baoping(王保平), Jin Yong(金涌). Study of pinning in a radial moving bed reactor[J]. Acta Petrolei Sinica: Petroleum Processing Section(石油学报：石油加工), 1993, 9(3):78-87
[10] Song Xuqi(宋续祺), Gong Meishan(龚美珊). Hydrodynamics of radial flow moving-bed reactor[J]. Journal of Chemical Industry and Engineering(China)(化工学报), 1992, 43(3):268-274
[11] Song Xuqi(宋续祺), Gong Meishan(龚美珊). The formation of cavity in moving bed radial flow reactor[J]. Journal of Chemical Industry and Engineering(China)(化工学报), 1993, 44(4):433-441
[12] Song Xuqi(宋续祺), Jin Yong(金涌), Gong Meishan(龚美珊). Profile of stress and phenomenon of pinning in an annular moving bed reactor with radial flow of gas[J]. Journal of Chemical Engineering of Chinese Universities(高校化学工程学报), 1993, 7(4):352-361
[13] Song Xuqi, Jin Yong, Yu Zhiqing. Influence of outward radial gas flow on particle movement in an annular moving bed[J]. Powder Technology, 1994, 79(3):247-256
[14] Chen Yunhua(陈允华), Zhu Xuedong(朱学栋), Wu Yongqiang(吴勇强), Dong Yanhe(董艳河), Zhu Zibin(朱子彬). Phenomenon of cavity and its size in rectangular moving-bed[J]. Journal of Chemical Industry and Engineering(China)(化工学报), 2006, 57(4):731-737
[15] Chen Yunhua(陈允华), Zhu Xuedong(朱学栋), Wu Yongqiang(吴勇强), Zhu Binghuan(朱炳焕), Zhu Zibin(朱子彬). Effects of two internals on pinning in a rectangular moving beds with cross flow of gas[J]. Journal of East China University of Sience and Technology：Natural Science Edition(华东理工大学学报：自然科学版), 2007, 33(5):593-599
[16] Chen Yunhua(陈允华), Zhu Xuedong(朱学栋), Wu Yongqiang(吴勇强), Zhu Zibin(朱子彬). Investigation of pinning in moving bed[J]. Journal of Chemical Engineering of Chinese Universities(高校化学工程学报),2007, 21(3):404-410
[17] Chen Yunhua(陈允华), Zhu Xuedong(朱学栋), Wu Yongqiang(吴勇强), Zhu Zibin(朱子彬). Effects of internals on the particle behavior in a rectangular moving bed with gas cross-flow[J]. The Chinese Journal of Process Engineering(过程工程学报), 2007, 7(4):639-645
[18] Bryan K Glover. Conically shaped screenless internals for radial flow reactors[P]: US, 7622089B1. 2009-11-24
[19] Bryan K Glover. Conically shaped screenless internals for radial flow reactors[P]: US, 7842259B2. 2010-11-30
[20] Guo Xueyan(郭雪岩), Chao Donghai(晁东海), Chai Huisheng(柴辉生), Yang Fan(杨帆). CFD analysis of wall effects in packed beds with small tube-to-sphere diameter ratio[J]. CIESC Journal (化工学报), 2012, 63(1):103-108
[21] Xie Hongyong(谢洪勇)，Liu Zhijun(刘志军). Science and Technology of Particles（粉体力学与工程）[M]. Beijing: Chemical Industry Press, 2007:40
[22] Li Hongzhong(李洪钟), Mooson Kwauk(郭慕孙). Nonfluidized Gas-solids Flow—Theory and Application(非流态化气固两相流：理论及应用)[M]. Beijing: Peking Univerity Press, 2002:13

梯形移动床径向反应器内颗粒的贴壁现象分析

Phenomenon of pinning in trapezoidal moving beds with cross-flow

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