BAI Xiaojun;ZENG Hongjiu;LIU Qinju;WANG Dapeng;

• 1:CHN Energy Shendong Coal Preparation Center
• 2:CHN Energy Shendong Technology Research Institute
• 3:China University of Ming and Technology

Abstract：

In order to improve the recycling of waste energy from industrial production in the coal preparation plant, the waste heat generated during the operation of the pressurised filter press fan was used for further dewatering in the final fine coal chute, and a rectangular air inlet(wind knife) was set in the discharge chute of the final fine coal centrifuge, which introduced the waste heat into the chute to dry the fine coal. The model was established by SolidWorks and imported into ICEM CFD for meshing, and then imported into Fluent for boundary condition setting and numerical simulation calculation. The influence of the wind knife position, the number of wind knives, the angle of wind knives and the hot air velocity on the internal flow field of the chute was systematically investigated. The results show that under the conditions of double wind knives, air velocity of 45 m/s, angle of 0° and height of 600 mm, the distribution of airflow in the chute can be obviously optimized, and the area with air velocity of 0 m/s does not appear in the axial direction at a distance of 200 mm to the right of Y-axis of the central plane(near the side of the single wind knife). The airflow field is more comprehensive and uniform, which provides a basic support for the utilisation of waste energy from the coal preparation plant.

Key Words： chute;multiphase flow;Reynolds stress model;Euler's model

Abstract:

Keywords:

Foundation: 国家科技支撑计划资助项目(2014BAB01B00)

Authors: BAI Xiaojun;ZENG Hongjiu;LIU Qinju;WANG Dapeng;

DOI: 10.13226/j.issn.1006-6772.24022501

References：

• [1] 方新英，吉如昇，张忠文.中国平煤神马集团的绿色低碳循环经济模式[J].煤炭工程，2017,49(8):158-161.
• [2] 刘婷婷，朱坤，温志超，等.废弃电器电子产品互联网回收发展趋势与挑战[J].环境保护，2023,51(8):66-71.
• [3] 马有福，杨丽娟，吕俊复.电站锅炉尾部烟气余热利用系统技术经济性比较[J].动力工程学报，2017,37(4):321-328.
• [4] 刘明.集成SCO2动力循环的燃煤电站余热回收系统研究[J].工程热物理学报，2017,38(8):1613-1618.
• [5] 李美莹，申思，张媛.传统燃气锅炉节能技术研究现状[J].清洗世界，2022,38(8):85-87.
• [6] 董兴华，栾苏，魏培静，等.复合储能控制系统在钻机制动能量回收中的应用[J].石油机械，2016,44(11):38-42.
• [7] 吴丽君，徐振龙，刘晓红，等.地铁轨道振动能量回收系统储能技术[J].交通科技与经济，2019,21(5):76-80.
• [8] 张策.地铁用飞轮储能型再生制动能量回收装置应用效果分析[J].铁道技术监督，2023,51(8):56-60.
• [9] 赵树彦，任利勤.选煤厂能耗标准与节能降耗技术研究[J].中国煤炭，2022,48(6):44-49.
• [10] 李炳才，赵杨，韩恒旺，等.降低加压过滤机吨煤功耗的实践[J].中州煤炭，2014(1):106-108.
• [11] 李国峰.基于加压过滤机压缩空气系统节能降耗的研究与应用[J].洁净煤技术，2023(S1):79-83.
• [12] 燕建华.加压过滤机系统节能降耗技术研究[J].洁净煤技术，2019(S1):113-117.
• [13] 梁吉军，杨震，陈超，等.圆盘加压过滤机系统节能降耗技术研究[J].通用机械，2020(9):35-36.
• [14] 谢睿宁，张国旺，龙渊.基于Fluent的新型气流微粉机数值模拟及结构优化[J].矿冶工程，2022,42(6):61-65.
• [15] 李新颖，肖军，张家旭，等.基于CFD的火箭滑橇水刹车水动性能分析[J].系统仿真技术，2021,17(1):37-42.