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对CH4-CaSO4反应体系在模拟实验的基础上, 通过分析确定了反应的途径, 进行了热力学和动力学研究, 并对反应机理进行了初步探讨. 结果表明, 该反应在热力学上是可行的, 能够自发进行, 在550~700℃的条件下可以发生, 生成硫化氢、碳酸钙和水, 根据动力学模型计算出的活化能以及根据动力学推算的地质条件下TSR的反应速率, 和前人根据地质实例进行推测的结果基本吻合, 验证了本实验研究的可行性, 从而为研究天然气保存死亡线的确定提供了新的理论依据.
On the basis of the simulation experiments, the CH4-CaSO4 reaction system was confirmed through the analysis of the reaction pathway, the thermodynamics and the kinetics were studied, and the reaction mechanism was discussed preliminarily.The results showed that the reaction was thermodynamically feasible, Can occur spontaneously and can occur at 550-700 ° C, producing hydrogen sulfide, calcium carbonate and water, the activation energy calculated from the kinetic model and the kinetics of TSR reaction rates under geological conditions, According to the geological example, the result of the conjecture is basically consistent, which verifies the feasibility of the experimental study, which provides a new theoretical basis for the study of determining the death line of natural gas preservation.