ZHANG Shengju;DUAN Qingbing;HE Guofeng;LIU Yewei;SUN Haiyong;

• 1:Energy Conservation and Engineering Technology Research Institute
• 2:China Coal Research Institute
• 3:National CWM Engineering and Technology Center
• 4:State Key Laboratory of Coal Mining and Clean Utilization ( China Coal Research Institute)

Abstract：

To obtain the optimum Shenfu coal water mixture( CWM) pipeline transportation parameters,the CWM rheology test was conducted to determine its critical shear rate. Through the relationship between the shear rate and shear stress of Shenfu CWM determined its rheology model,fitted the mathematical equation which was suitable for Shenfu CWM. Under different pipe diameters and CWM concentration,investigated the influence of CWM average rate on pipeline pressure loss,obtained the optimum CWM pipeline transportation parameters. The results show that the critical shear rate of CWM is 40. 74 s-1,the fitting rheological equation follows the bingham plastic model.The pipeline is more suitable for low concentration and low viscosity CWM. Keep the average flow velocity of CWM unchanging,the smaller the pipe diameter,the bigger the pipeline pressure loss. When the pipe diameter ranges from 200 mm to 300 mm,the pipeline pressure loss meets the demands of industrial application.

Key Words： coal water mixture(CWM);pipeline transportation;transportation properties;rheological property;bingham plastic model;pressure loss

Abstract:

Keywords:

Foundation: 国家科技部科研院所技术开发专项资助项目(2011EG222214)

Authors: ZHANG Shengju;DUAN Qingbing;HE Guofeng;LIU Yewei;SUN Haiyong;

DOI: 10.13226/j.issn.1006-6772.2014.05.009

References：

• [1]颜淑娟,段清兵,何国锋,等.低挥发分煤制备气化水煤浆的可行性研究[J].洁净煤技术,2013,19(6):55-58.
• [2]杨俊利,李培芳.水煤浆管道输送特性的研究[C]//水煤浆技术推广应用研讨会论文集.昆明:国家水煤浆工程技术研究中心,2005:56-61.
• [3]顾伯康.对我国管道输煤问题的探讨[J].煤炭科学技术,1995,23(1):55-58.
• [4]李鹏.德士古气化水煤浆管道设计[J].化工设备与管道,2007,44(5):52-54.
• [5]吴艳.油煤浆表观黏度测定方法研究[J].洁净煤技术,2014,20(3):61-65.
• [6]赵国华,段钰锋,王秋粉,等.水煤浆管道输送数值模拟研究进展[J].南京师范大学学报:工程技术版,2007,7(2):18-23.
• [7]赵国华,陈良勇,段钰锋.高浓度水煤浆直管内流动的数值模拟[J].锅炉制造,2007,7(4):28-32.
• [8]何国锋,段清兵.水煤浆新技术研发与实践[M].北京:中国石化出版社,2012:7-8.
• [9]王睿坤,刘建忠,胡亚轩,等.水煤浆掺混湿污泥对浆体成浆特性的影响[J].煤炭学报,2010,35(S1):61-65.
• [10]刘猛,陈良勇,段钰锋.水煤浆流经局部管件的阻力损失和均配规律[J].燃烧科学与技术,2009,15(5):445-450.
• [11]李培芳,马云龙,徐继怀,等.水煤浆管道输送特性的研究[J].水力采煤和管道运输,1996,3(3):4-9.
• [12]费祥俊.高浓度与中浓度煤浆管道输送的比较分析[J].煤炭学报,1996,21(1):79-84.
• [13]张怀远.关于浆体的管道输送[J].油气储运,2000,19(1):1-5.