摘要
巷道热湿环境是深部资源开采所遭遇的重要问题之一,人工制冷降温技术成为解决该问题的关键.然而矿用空冷器作为系统末端,位于生产最前线,工作环境恶劣,气侧污垢积聚严重.本文结合Euler-Lagranian模型,针对深井热湿、含尘环境下空冷器气侧的污垢沉积规律展开研究.研究发现,当粉尘粒径小于10μm时,粉尘颗粒受重力影响较小,管壁上的污垢分布较为均匀;当粉尘粒径大于10μm时,粉尘颗粒受重力影响较大,污垢的分布主要集中于前部管道;粉尘的沉积量与风速,管内水温呈负相关关系,与相对湿度呈正相关关系.研究结果对于深部热湿环境下空冷器气侧高效防垢、抑垢及除垢技术的研究具有理论指导意义.
Cooling system is widely used in deep coal mines of China for the increasing heat and humid hazard,which are the problems caused by the deep mining. Air cooler,located at the mining tunnel,is easily fouled by the hot,humid and dust air. The Euler-Lagranian model is taken in this paper to study the mechanism of fouling of the gas side of air cooler under hot and humid deep coal mine. Results are indicated that when the dust particle size is less than 10 μm,the dust particles are less affected by gravity,and the fouling distribution on the pipe wall is more uniform. When the dust particle size is larger than 10 μm,the dust particles are more affected by gravity,and the fouling distribution is mainly concentrated in the front tube. Dust deposition and water temperature in the pipe is negatively correlated with air velocity,while it is positively correlated with relative humidity. It is of theoretical guiding significance to study the fouling mechanism of air cooler in hot and humid dusty environment of deep wells for the research of efficient prevention and suppressing scaling and scale removal technology,and the performance of air cooler.
作者
张毅
韩巧云
刘仙萍
袁志刚
Zhang Yi;Han Qiaoyun;Liu Xianping;Yuan Zhiaang(School cf Civil Engineeang, Hunan Univeaity cf Science and Technology, Xiangtan 411201, China;School cf Resources, Environment and Safety Engineering, Hunan Univeaity cf Science and Technology, Xiangtan, 411201, China)
出处
《矿业工程研究》
2019年第2期55-62,共8页
Mineral Engineering Research
基金
国家自然科学基金资助项目(51704110)
湖南省自然科学基金资助项目(2017JJ3075
2017JJ3090)
湖南省教育厅资助科研项目(16C0654)
关键词
深井降温
空冷器
污垢沉积
热湿环境
cooling under deep mine
air cooler
fouling
hot and humid environment
