摘要
针对装车站冲击产尘浓度高,且不易控制的问题,提出一种新型的软密封控尘系统,并通过数值模拟方法探究了新型通风系统下流场风流结构和粉尘质量浓度分布特征并与传统通风系统进行比对。结果表明:通过流场顶部提供上升气流,四周提供具有水平剪切力的诱导旋流的方式可以成功生成作用范围和气流强度可控的涡流场;相比于传统通风系统,软密封控尘系统可以有效降低流场中部区域内的静压值,使流场中部区域与流场外围空间产生较大的压差,对粉尘的轴向捕集距离延长了近1倍,更好地实现对粉尘的长距离捕集;在软密封控尘系统下粉尘浓度由107.14 mg/m^(3)降低至20.81 mg/m^(3),说明该通风系统能够对无组织排放的粉尘进行有效地捕控。
Aiming at the problem of high concentration and difficult control of dust in loading station,a new type of soft seal dust control system was proposed.The airflow structure and dust mass concentration distribution characteristics of the flow field under the new ventilation system were explored by numerical simulation method and compared with the traditional ventilation system.The simulation results show that the vortex field with controllable range of action and airflow intensity can be generated by providing updraft in the roof of the flow field and providing induced swirl with horizontal shear force around it.Compared with the traditional ventilation system,the soft seal dust control system effectively brings down the static pressure in the central region of the flow field,and produces a large pressure difference between the central region of the flow field and the outer space of the flow field.The axial capture distance of dust is almost doubled,and the long-distance capture of dust is better realized.According to the test,the dust concentration was reduced from 107.14 mg/m^(3) to 20.81 mg/m^(3) under the soft sealing dust control system,indicating that the ventilation system can effectively capture and control the unorganized dust emission.
作者
包永志
方连鑫
于岩斌
崔柏闻
李明扬
王曼琳
BAO Yongzhi;FANG Lianxin;YU Yanbin;CUI Bowen;LI Mingyang;WANG Manlin(CHN Energy Beidian Shengli Co.,Ltd.,Xilinhot 026000,China;College of Safety and Environmental Engineering,Shandong University of Science and Technology,Qingdao 266590,China;College of Energy Storage Technology,Shandong University of Science and Technology,Qingdao 266590,China)
出处
《煤炭工程》
北大核心
2025年第1期106-112,共7页
Coal Engineering
基金
国家自然科学基金项目(52074171)
山东省自然科学基金优秀青年基金项目(ZR2023YQ047)
山东省高等学校青创科技计划创新团队(2021KJ010)。
关键词
软密封控尘系统
风流结构
轴向捕尘距离
粉尘捕控
soft seal dust control system
airflow structure
axial dust catching distance
dust capture control
作者简介
包永志(1982-),男,内蒙古锡林浩特人,硕士研究生,高级工程师,主要从事煤炭能源生产安全技术管理工作,E-mail:35600787@qq.com。
