摘要
为研究气化灰渣灌浆材料在管道中的输送特性,降低输送时管道的磨损,减少堵管、爆管现象的发生。根据陕北某矿生产实际,依据料浆的性质和结构流理论,采用FLUENT数值模拟手段,从5种不同水灰比和4种不同管径中比选出最优方案。基于数值模拟结果,讨论了管道阻力损失与管径、水灰比之间的关系,分析了管道不同管段处的流速变化。结果表明,管径与管道阻力损失呈负相关关系,水灰比与管道阻力损失呈正相关关系;最佳水灰配比为1∶0.2,最优管径为φ120 mm。通过对水灰比和管径的优化,可以加快灌浆材料输送的效率,降低料浆输送时对管道的磨损。
To study the transportation characteristics of gasification ash grouting material in the pipeline,reduce the wear of the pipeline during transportation,and reduce the occurrence of plugging and bursting,according to the actual production of a mine in northern Shaanxi,based on the properties of the slurry and the theory of structural flow,a FLUENT numerical simulation method was used to select the optimal scheme from five different water-cement ratios and four different pipe diameters.Based on the numerical simulation results,the relationship between the pipeline resistance loss and the pipe diameter and the water-cement ratio was discussed,and the flow rate changes at different pipe sections of the pipeline were analyzed.The results show that the pipe diameter is negatively correlated with the pipe resistance loss,and the water-cement ratio is positively correlated with the pipe resistance loss.The optimal water-cement ratio is 1∶0.2,and the optimal pipe diameter isφ120 mm.By optimizing the water-cement ratio and pipe diameter,the efficiency of grouting material transportation can be accelerated and the wear of the pipeline during slurry transportation can be reduced.
作者
文虎
黄剑
赵炬
张铎
黎杰
WEN Hu;HUANG Jian;ZHAO Ju;ZHANG Duo;LI Jie(College of Safety Science and Engineering,Xi′an University of Science and Technology,Xi′an 710054,China;School of Coal and Chemical Industry,Shaanxi Energy Institute,Xianyang 712000,China)
出处
《煤炭技术》
CAS
北大核心
2023年第9期119-124,共6页
Coal Technology
基金
陕西省教育厅一般专项科研计划项目(22JK0324)
陕西能源职业技术学院青年专项资助项目(2021QN02)
陕西省技术创新引导专项(2021QFY04-05)。
关键词
气化灰渣
管道输送特性
数值模拟
灌浆
灌浆输送参数
gasification ash
pipeline transportation characteristics
numerical simulation
grouting
grouting transport parameters
