CH4/CO2混合气体爆燃特性研究进展

掌握甲烷与二氧化碳混合气体的爆燃特性对高含二氧化碳天然气的勘探、开发和利用具有安全保 障作用,对涉及甲烷和二氧化碳的其他工业过程如煤炭气化、惰化、抑爆、泄爆等应急处置和安防设计具有指 导价值。为推动相关学科的进步,分类回顾了甲烷与二氧化碳混合气体爆燃特性的实验和理论研究进展,涉 及爆燃范围、爆燃压强、惰化等爆燃特性的实验研究以及爆燃范围领域的理论研究,系统分析和评价了各个研 究领域取得的成果、存在的问题,并从提高实验数据的完整性、可比性和适用面,理论预测方法可靠性的评价 方法与指标,理论预测方法的适用面从常温常压条件向更复杂的情形扩展3个方面展望了未来的研究重点。

A review of explosion characteristics of methane and carbon dioxide gas mixtures

It is a safety guarantee for exploration,development and utilization of natural gas containing high carbon dioxide component to grasp the explosion characteristics of methane and carbon dioxide gas mixtures.Meanwhile,it is valuable guidance for the industrial processes involving methane and carbon dioxide such as coal gasification,inertization,explosion suppression and explosion venting,to master related explosion characteristics.In order to promote progress of relevant subject,experimental and theoretical investigation on explosion characteristics of methane and carbon dioxide gas mixture is reviewed systematically in this paper,including the experiments related to flammability region,explosion pressure and inertization and theoretical prediction of flammability limits.Progress and problems that need to be solved in every field are analyzed.Finally,the future highlights in the following three aspects are expected: firstly,how to improve the integrality,comparability and applicability of experimental data;secondly,the methods and indexes of reliability assessment for theoretical prediction;furthermore,how to extend applicability of theoretical prediction from at normal temperature and pressure conditions to more complex situations.