由于管道运输的煤炭泥中煤炭颗粒大小的变化导致的风湿学参数的研究
Li-An Zhao1, Chunsen Jian2, Ronghuan Cai3
1College of Mining, Liaoning Technical University, Fuxin, 123000, Liaoning, China.
Scientific reports
|November 26, 2024
概括
这项研究通过磨损平衡方程来完善粗煤泥的水力动力传输. 实验数据显示,运输过程中颗粒大小的变化和粘度的变化有助于泥管理.
科学领域:
- * 流体力学 流体力学
- * 材料科学 材料科学
- * 化学工程 化学工程
背景情况:
- *粗粒煤泥的水力动力传输在保持颗粒大小分布和流体性质方面存在挑战.
- *现有的模型可能无法完全捕捉长时间运输过程中泥成分和粘度的动态变化.
- * 了解颗粒精炼和粘度变化对于高效的泥管道运行至关重要.
研究的目的:
- * 提出和验证在水力动力传输过程中精炼煤渣的磨损平衡方程.
- * 开发颗粒精炼溶液模型和混合粗煤和细煤泥的粘度预测公式.
- * 调查输送时间和度对粒子大小分布和泥粘度的影响.
主要方法:
- * 结合理论分析与煤渣水力动力传输的实验数据.
- * 开发了一种颗粒精制溶液模型和一种粘度预测公式.
- * 使用赫歇尔-布克利流体模型进行粘度预测.
- *分析了不同度和传送时间的粒子大小分布和泥粘度的实验数据.
主要成果:
- *延长输送时间导致粗颗粒的减少和细颗粒 (<0.074毫米) 的增加.
- * 泥粘度倾向于随着输送时间的增加而增加,增长速度减慢.
- * 预测的颗粒精炼值与测量值相比,最大偏差为10%.
- *在58%的度下观察到最低粘度,预测和测量粘度值之间的偏差为5.23%.
结论:
- * 磨擦平衡方程有效地模拟了煤渣水力动力传输中的颗粒精炼.
- *开发的模型准确地预测了粒子大小变化和泥粘度.
- * 建立了混合降低粘度效应的公式,优化泥度以达到最低粘度.
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