水合物法提纯低浓度煤层气的研究进展  

Research progress of purification of low-concentration coal-bed methane via hydrate method

作　　者：邵伟强 梁海峰[1] 张锡彦 张华 SHAO Weiqiang;LIANG Haifeng;ZHANG Xiyan;ZHANG Hua(College of Chemistry and Chemical Engineering,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China)

机构地区：[1]太原理工大学化学化工学院,山西太原030024

出　　处：《化工进展》2021年第6期3143-3150,共8页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金青年基金(51106104)。

摘　　要：开发利用低浓度煤层气资源,对于缓解我国能源紧缺、消费结构不合理等问题具有重要意义。本文介绍了我国低浓度煤层气的利用现状,通过比较和分析几种煤层气提纯技术的优缺点,认为水合物法提纯技术具有很大潜力。水合物法提纯低浓度煤层气技术具有环保、安全、储气率高、原料简单等优点,同时仍需解决降低水合物生成条件、缩短水合物诱导时间、提高CH_4回收率等关键问题。重点概括了低浓度煤层气水合物热力学和动力学基本理论的发展以及水合法提纯低浓度煤层气技术的机理研究。从表面活性剂、新型耦合技术及水合反应器三个方面分别阐述了水合物法提纯低浓度煤层气技术的研究进展。最后,展望了水合物法提纯低浓度煤层气技术的工业化前景,提出了以下具体研究方向:探寻优质的添加剂组合并结合多级分离的方法对低浓度煤层气进行提纯,进一步探究水合法同其他煤层气提纯法相耦合的技术,优化反应器结构以及完善经济评价体系来促进其工业化进程。The development and utilization of low concentration coal-bed methane(LCCBM)resources are of great significance to alleviating energy shortage and irrational consumption structure in China.The present situation of utilization of LCCBM is introduced.Through comparing and analyzing the advantages and disadvantages of several purification technologies of CBM,hydrate purification technology is considered to have great potential.The method of hydrate purification of LCCBM has the advantages of environmental protection,safety,high gas storage rate and simple raw materials,etc.At the same time,key problems such as reducing hydrate formation conditions,shortening the hydrate induction time and improving the recovery rate of CH4 still need to be solved.The development of the basic theory of thermodynamics and kinetics of LCCBM hydrate and the mechanism research of the technology of purifying LCCBM by hydration are summarized.The research progress of LCCBM purification technology by hydrate method is described in three aspects:surfactants,new coupling technology and hydration reactor.Finally,the industrialization of LCCBM purification technology by hydrate method is prospected,and the following specific research directions are proposed:exploring the high-quality additive combination and combining it with multi-stage separation methods to purify LCCBM,further exploring the technology of coupling the hydration method with other CBM purification methods,optimizing the reactor structure and improving the economic evaluation system,so as to promote its industrialization process.

关 键 词：低浓度煤层气 水合物 表面活性剂 反应器 

分 类 号：TQ546.5[化学工程—煤化学工程]