电容层析成像在煤粉料仓下料中的应用

doi:10.3969/j.issn.0438-1157.2014.02.008

化工学报 ›› 2014, Vol. 65 ›› Issue (2): 422-429.DOI: 10.3969/j.issn.0438-1157.2014.02.008

电容层析成像在煤粉料仓下料中的应用

陆海峰, 郭晓镭, 陶顺龙, 龚欣, 鲁军

华东理工大学煤气化及能源化工教育部重点实验室, 上海市煤气化工程技术研究中心, 上海 200237

收稿日期:2013-05-07 修回日期:2013-06-04 出版日期:2014-02-05 发布日期:2014-02-05
通讯作者: 龚欣
基金资助:
国家自然科学基金项目（21206041）；中国博士后科学基金项目（2012M520847）；中央高校基本科研业务费专项资金项目。

Application of electrical capacitance tomography in hopper discharge of pulverized coal

LU Haifeng, GUO Xiaolei, TAO Shunlong, GONG Xin, LU Jun

Key Laboratory of Coal Gasfication and Energy Chemical Engineering of Ministry of Education, Shanghai Research Center of Gasification Technology, East China University of Science and Technology, Shanghai 200237, China

Received:2013-05-07 Revised:2013-06-04 Online:2014-02-05 Published:2014-02-05
Supported by:
supported by the National Natural Science Foundation of China (21206041), China Postdoctoral Science Foundation Funded Project (2012M520847) and the Fundamental Research Funds for the Central Universities.

摘要/Abstract

摘要： 煤粉料仓下料是气流床粉煤气化工艺中粉体供料单元的重要组成部分，其安全稳定运行具有重大的经济意义。提出将电容层析成像（ECT）技术用于煤粉料仓下料，从而实现研究手段的可视化。在煤粉料仓下料系统上，通过线性反投影算法及图片累加技术，获得料仓出口管道截面的相对颗粒浓度分布图像和下料过程的二维流型图；对比分析了称重信号和ECT信号的时间序列曲线，并通过RSD统计方法定量描述煤粉下料的波动程度。结果表明，ECT研究与煤粉下料分区理论吻合良好，借助ECT可充分认识煤粉下料流型和气固作用特征。

关键词: 煤粉, 料仓下料, 成像, 流型, 气化, 粉体

Abstract: Hopper discharge is one of the most important components in the entrained-flow gasification technology of pulverized coal. The safety and stabilization of hopper discharge are of great economic significance. In this paper, electrical capacitance tomography (ECT) was used to realize the visualization of pulverized coal discharge. The ECT images were reconstructed using linear back projection (LBP) algorithm and accumulated to obtain the relative particle concentration distribution and two-dimensional images of flow pattern. Furthermore, the weighing signal and ECT signal were analyzed and compared. Finally, statistical method of RSD was used to describe the fluctuation of hopper discharge. It showed that the research results of ECT agreed well with divisional discharging theory, which confirmed the feasibility of ECT application to the hopper discharge of pulverized coal.

Key words: pulverized coal, hopper discharge, tomography, flow pattern, gasification, powders

中图分类号:

TQ536

陆海峰, 郭晓镭, 陶顺龙, 龚欣, 鲁军. 电容层析成像在煤粉料仓下料中的应用[J]. 化工学报, 2014, 65(2): 422-429.

LU Haifeng, GUO Xiaolei, TAO Shunlong, GONG Xin, LU Jun. Application of electrical capacitance tomography in hopper discharge of pulverized coal[J]. CIESC Journal, 2014, 65(2): 422-429.

参考文献 29

[1]	Guo Xiaolei, Dai Zhenghua, Gong Xin, Chen Xueli, Liu Haifeng, Wang Fucheng, Yu Zunhong. Performance of an entrained-flow gasification technology of pulverized coal in pilot-scale plant[J]. Fuel Processing Technology, 2007, 88: 451-459
[2]	Dai Zhenghua, Gong Xin, Guo Xiaolei, Liu Haifeng, Wang Fuchen, Yu Zunhong. Pilot-trial and modeling of a new type of pressurized entrained-flow pulverized coal gasification technology[J]. Fuel, 2008, 87: 2304-2313
[3]	Liang Qinfeng, Guo Xiaolei, Dai Zhenghua, Liu Haifeng, Gong Xin. An investigation on the heat transfer behavior and slag deposition of membrane wall in pilot-scale entrained-flow gasifier[J]. Fuel, 2012, 102: 491-498
[4]	Lu Haifeng, Guo Xiaolei, Gong Xin, Huang Wanjie, Ma Sheng, Wang Chuanhong. Study of the flowability of pulverized coals[J]. Energy & fuels, 2009, 23: 5529-5535
[5]	Rayman P. Aeration of bulk materials in silos and storage tanks[J]. Bulk Solids Handing, 2009, 29: 338-340
[6]	Huang Wanjie, Gong Xin, Guo Xiaolei, Dai Zhenghua, Liu Haifeng, Zheng Lijiao, Zhao Jinchao, Xiong Yanjun. Discharge characteristics of cohesive fine coal from aerated hopper[J]. Powder Technology, 2009, 194: 126-131
[7]	Donsi G, Ferrari G. Improvement of bulk flow properties of powders[J]. Powder Technology, 1991, 65: 469-476
[8]	Klein J, Höhne D, Husemann K. The influence of air permeation on the flow properties of bulk solids[J]. Chemical Engineering Technology, 2003, 26(2): 139-146
[9]	Cannavacciuolo A, Barletta D, Donsi G, Ferrari G, Poletto M. Arch-free flow in aerated silo discharge of cohesive powders[J]. Powder Technology, 2009, 191: 272-279
[10]	Lu Haifeng, Guo Xiaolei, Gong Xin, Cong Xingliang, Liu Kai, Qi Haifeng. Experimental study on aerated discharge of the pulverized coal[J]. Chemical Engineering Science, 2012, 71: 438-448
[11]	Xie C G, Plaskowski A, Beck M S. 8-electrode capacitance system for two-component flow identification(Ⅰ): Tomography flow imaging [J]. IEEE Proceedings, 1989, 136(4): 173-183
[12]	Mu Zhongbo (穆忠波),Kang Ningmin (康宁民),Hou Chenglin (侯成林),Yang Daoye (杨道业). Application of electrical capacitance tomography in super phase pulverized-coal transportation [J]. Chinese Journal of Scientific Instrument (仪器仪表学报), 2007, 28(11): 1987-1993
[13]	Liu Shi (刘石), Wang Haigang (王海刚), Jiang Fan (姜凡), Xu Jianzhong (徐建中). Measurement on solids distribution in CFB using ECT [J]. Journal of Engineering Thermophysics, 2001, 22(5): 645-648
[14]	Wang Haigang (王海刚), Liu Shi (刘石), Jiang Fan (姜凡), Yang Wuqiang (杨五强). Dual-plane electrical capacitance system and usage in experience [J]. Instrument Technique and Sensor, 2002(2): 3-6
[15]	Lim Eldin, Wee Chuan, Zhang Yan, Wang Chi-Hwa. Effects of an electrostatic field in pneumatic conveying of granular materials through inclined and vertical pipes [J]. Chemical Engineering Science, 2006, 61(24): 7889-7908
[16]	Smolik Waldemar. Fast forward problem solver for image reconstruction by nonlinear optimization in electrical capacitance tomography [J]. Flow Measurement and Instrumentation, 2010, 21(1): 70-77
[17]	Qi Haifeng (漆海峰), Guo Xiaolei (郭晓镭), Lu Haifeng (陆海峰), Wu Fuyu (吴福玉), Gong Xin (龚欣). Measurement of flowability of coal powders and research methods [J]. CIESC Journal (化工学报),2012, 63: 434-440
[18]	Lu Haifeng, Guo Xiaolei, Cong Xingliang, Liu Kai, Sun Xiaolin, Xie Kai, Gong Xin, Lu Jun. The discharge of pulverized coal from a pressurized aerated hopper[J]. Industrial & Engineering Chemistry Research, 2012, 51: 13839-13845
[19]	Lu Haifeng, Guo Xiaolei, Gong Xin, Cong Xingliang, Liu Kai, Qi Haifeng. Effects of gas type and hopper pressure on the discharge of the pulverized coal[J]. Industrial & Engineering Chemistry Research, 2012, 51: 3709-3714
[20]	Ma Sheng (马胜), Guo Xiaolei (郭晓镭), Gong Xin (龚欣), Huang Wanjie (黄万杰), Lu Haifeng (陆海峰), Liu Kai (刘剀). Flow regime of pulverized coal in dense-phase pneumatic conveying system[J]. CIESC Journal (化工学报),2010, 61(6):1415-1421
[21]	Cong Xingliang, Guo Xiaolei, Gong Xin, Lu Haifeng, Dong Weibing. Experimental research of flow patterns and pressure signals in horizontal dense phase pneumatic conveying of pulverized coal[J]. Powder Technology, 2011, 208: 600-609
[22]	Ouwerkerk C E D, Molenaar H J, Frank M J W. Aerated bunker discharge of fine dilating powders[J]. Powder Technology, 1992, 72: 241-253
[23]	Li J, Pandiella S S, Webb C, Mcglinchey D, Cowell A, Xiang J, Knight L, Pugh J. An experimental technique for the analysis of slug flows in pneumatic pipelines using pressure measurements[J]. Particle Science Technology, 2002, 20: 283-303
[24]	Lu Haifeng, Guo Xiaolei, Gong Xin, Cong Xingliang, Dong Weibin. Study on the fluidization and discharge characteristics of cohesive coals from an aerated hopper[J]. Powder Technology, 2011, 207: 199-207
[25]	Du S W, Liu T C. A rate model for the discharge of pulverized coal from a pressurized aetaed-tank[J]. Powder Technology, 1989, 57: 69-75
[26]	Cong Xingliang, Guo Xiaolei, Gong Xin, Liu Kai, Xie Kai, Sun Xiaolin. Flow pattern characteristics in vertical dense-phase pneumatic conveying of pulverized coal using electrical capacitance tomography[J]. Industrial & Engineering Chemistry Research, 2012, 51: 15268-15275
[27]	Donsi G, Ferrari G, Poletto M. Distribution of gas pressure inside a hopper discharging fine powders[J]. Chemical Engineering Science, 1997, 52: 4291-4302
[28]	Ferrari G, Bell T A. Effect of aeration on the discharge behaviour of powders[J]. Powder Handing Processing, 1998, 10: 269-274
[29]	Schepers H E, Beek J H G M, Bassingthwaighte J B. Four methods to estimate the fractal dimension from self-affine signals[J]. Engineering in Medicine and Biology Magazine, IEEE, 1992, 11: 57-64

电容层析成像在煤粉料仓下料中的应用

Application of electrical capacitance tomography in hopper discharge of pulverized coal

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