煤矿瓦斯变压吸附提纯甲烷的研究进展  

Research progress of methane purification from coal mine gas by variable pressure adsorption

作　　者：栗硕豪 巩雨晴 付沈光 王亮[1] 程远平[1] Shuohao Li;Yuqing Gong;Shenguang Fu;Liang Wang;Yuanping Cheng(School of Safety Engineering,China University of Mining and Technology,Xuzhou 221116,China;Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization,China University of Mining and Technology,Xuzhou 221008,China)

机构地区：[1]中国矿业大学安全工程学院,徐州221116 [2]中国矿业大学江苏省煤基温室气体减排与资源化利用重点实验室,徐州221008

出　　处：《中国科学：化学》2023年第6期992-1007,共16页SCIENTIA SINICA Chimica

基　　金：国家自然科学基金资助项目(编号:52204255);中央高校基本科研业务费专项资金资助(编号:JY220007);中国矿业大学江苏省煤基温室气体减排与资源化利用重点实验室专项资金资助(编号:PCSX202201)。

摘　　要：因煤层赋存条件和抽采技术水平限制,导致煤矿抽采瓦斯中甲烷(CH_(4))浓度偏低,而直接排空处理将造成清洁能源浪费和温室效应加剧,因此研究煤矿瓦斯中CH_(4)提纯利用途径将对煤炭行业节能减排具有重要意义.相比于其它气体分离提纯技术,变压吸附分离技术具有操作简单、能耗低及工业化成熟度高等诸多优势.本文将以变压吸附分离技术提纯CH_(4)为核心,重点论述了近些年吸附剂类型、吸附分离机制和分子动力学模拟等方面的研究进展,然后列举变压吸附提纯CH_(4)工艺优化及工业大规模应用实例,最后结合基础研究和工程应用总结展望了变压吸附技术在CH_(4)提纯领域的发展前景,并指出低浓度瓦斯(<10%CH_(4))提纯及真空变压吸附技术是为进一步提升煤矿瓦斯利用率而亟需攻坚克难的主要研究方向.The extraction of coal mine gas is limited by coal seam conditions and extraction technology,resulting in obtained low concentrations of methane(CH_(4))causing the waste of clean energy and greenhouse effect increasing within directly emptying.Compared with other separation and purification technologies,the pressure-swing adsorption separation technology has various advantages such as simple operation,low energy consumption and high industrial maturity.This paper will focus on the purification of CH_(4)via variable pressure adsorption(VPS)and discuss the recent research progress on the type of adsorbents,adsorption and separation mechanisms and molecular dynamics simulations,then followed by examples of VPS purification of CH_(4)and industrial large-scale applications.Finally,this paper also summarizes the prospect of the development of VPS technology in the field of CH_(4)purification,on the basis of fundamental research and engineering application,and then points out the purification of low concentration gas(10%CH_(4))and vacuum-VPS technology regarded as the main research direction,which needs to improve the utilization rate of coal mine gas in the future.

关 键 词：低浓度瓦斯 变压吸附法 吸附剂 分子模拟 工艺优化 

分 类 号：TD712.67[矿业工程—矿井通风与安全]