油煤浆管道输送特性研究  

Study on characteristics of coal-oil mixture transported in pipeline

作　　者：宋新南[1] 张双进[1] 

机构地区：[1]河北工业职业技术学院,河北石家庄050091

出　　处：《煤炭学报》2002年第3期304-309,共6页Journal of China Coal Society

摘　　要：根据流变学理论、流体和流动类型假定以及实验数据 ,证实油煤浆的管内流动通常属幂律流体层流 .据此提出了可用于油煤浆流变参数测定的管道输送实验方法 ,以及可用于油煤浆管道设计的管内流速分布、黏度、雷诺数、沿程阻力系数和直角弯头阻力系数计算公式 .并在本研究条件下得到油煤浆的管道输送特性 :稠度系数随煤粉浓度显著增大 ,随温度显著减小 ;流变指数主要取决于油的性质 ,与煤粉浓度关系不大 ,但随温度有所增大 ;表观黏度和表观沿程阻力系数随煤粉浓度显著增大 ,随温度显著减小 ,并与管径和流速有关 ;直角弯头阻力系数是同条件下表观沿程阻力系数的 10～ 2Based on the theory of rheology,hypothesis about fluid and flowing type, and data from the experiment, it's proved that coal-oil mixture transported in pipeline accord generally with power-law fluid's laminar flowing. So that, an available test method to obtain rheologic parameters of coal-oil mixture is raised, and a series of formulas available for coal-oil mixture pipeline's designing such as velocity distribution, viscosity, Reynolds number, linear resistance coefficient and local resistance coefficient of 90° elbow are given also. And on the condition of this research, some conclusions about coal-oil mixture might be given: the consistency coefficient would increase evidently with the coal's concentration, and decrease evidently with temperature. The rheologic index depends mainly on the oil's property but not evidently on the coal's concentration, and would increase to some extent with temperature. The apparent viscosity and the linear resistance coefficient would increase evidently with the coal's concentration, and decrease evidently with temperature. The local resistance coefficient of 90° elbow is about 10～20 times of the linear resistance coefficient on the same condition.

关 键 词：管道输送 流变学理论 雷诺数 液态燃料 阻力系数 油煤浆 

分 类 号：TQ517.4[化学工程] TQ022.125