矿井通风热湿提取与资源化利用方法  

Extraction and resource utilization of heat and humidity in mine ventilation

作　　者：周福宝 黄荣廷[2] 辛海会 菅从光[2] ZHOU Fu-bao;HUANG Rong-ting;XIN Hai-hui;JIAN Cong-guang(China Academy of Safety Science and Technology,Beijing 116016,China;School of Safety Engineering,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]中国安全生产科学研究院,北京116016 [2]中国矿业大学安全工程学院,徐州221116

出　　处：《工程科学学报》2022年第10期1709-1718,共10页Chinese Journal of Engineering

基　　金：国家重点研发计划资助项目(2018YFC0808100)。

摘　　要：矿井热湿风流中储存有大量低位热能和水汽,导致井下工作环境恶劣,乏风直排造成了大量资源浪费.因此,矿井通风热湿提取与资源化利用是解决深井热害和矿井低碳转型发展的重要途径之一.受地面大气状态参数和井下热湿源的影响,井巷热湿风流参数随时间变化,实时掌握井巷热湿风流转变特征是精准提取矿井风流中低位热能的关键.本文基于热湿风网实时解算,确定了矿井关键热湿节点分布规律及变化特征;建立了冷凝热湿提取计算模型,研发了热湿风流低位冷凝余热提用技术,形成了制冷–除湿联合的低位热能原位利用系统;提出了矿井乏风集中式和关键节点分布式热湿提取与资源化利用方法,并对提热收水效果进行了实例分析,为矿井低位热能提取利用和热害治理提供了理论基础和建设思路.Massive low-grade thermal energy and water vapor are stored in the hot and humid airflow of mines,typically resulting in a poor underground working environment and posing threats to worker safety and health.The direct discharge of exhausted ventilation air causes an enormous waste of resources as well as pollution problems to the surrounding environment.Therefore,the extraction and utilization of mine ventilation heat and humidity have become some of the most important ways to solve thermal damage problems in deep mines,thereby boosting their low-carbon transformation development.Affected by the changes in the surface atmospheric and downhole heat and humidity sources,the hot and humid airflow parameters in mines change with time.Real-time determination of the hot and humid airflow characteristics in mines is key to extracting low-grade thermal energy from the underground environment efficiently.In this paper,the distribution law and variation characteristics of key heat and humidity joints are determined based on the real-time calculation of the hot and humid air network.A calculation model of condensation heat and humidity extraction is established,and the technology of low-grade condensation waste heat extraction from heat and humidity airflow is also developed,which,in composition,forms a low-grade heat in situ utilization system combined with refrigeration and dehumidification.Furthermore,the centralized and distributed thermal and humidity extraction and resource utilization methods of coal mine ventilation are put forward.The effects of heat extraction and water recovery are also analyzed using examples.The results show that around 224 t of moisture is wasted every day in ventilation air emission,whose recycling has economic benefits.Thousands of kilowatts of thermal energy are stored in the ventilation air emission,which can be used as direct heat energy or converted electricity.An approximately linear relationship is revealed between the temperature decrease and theoretical moisture recovery from ventila

关 键 词：矿井通风 热湿风流 风网解算 低位热能提取 冷凝余热利用 

分 类 号：TG142.71[一般工业技术—材料科学与工程]