含（CH4+CO2+H2S）酸性天然气水合物生成的影响因素

摘要

The possible influences of H2S and CO2 in natural gases on the transportation of natural gas were introduced. Phase equilibria of the hydrates of (CH4+CO2+H2S) ternary sour natural gases were studied based on the Chen-Guo hydrate model and effects of sour natural gas components on hydrate formation were analyzed. The results indicated that the degrees of different components in sour natural gases affecting the formation of hydrates were different, and H 2S had the most obvious influence on hydrate formation. The influence direction of the same component in different conditions could be different. The research results could provide a theoretical guidance for removing CO2 and H2S by hydrate technology from sour natural gases, especially the natural gas with high H2S content.%介绍了含H2S和CO2组分的天然气输送时可能带来的影响。基于Chen-Guo模型进行含(CH4+CO2+H2S)酸性天然气水合物相平衡研究，分析了酸性天然气各组分对水合物生成的影响。结果表明，酸性天然气中各组分对水合物生成的影响程度不同，H2S影响最为明显；同一组分在不同条件下影响方向可能不同。分析结果可为水合物法天然气脱硫脱碳提供理论指导，尤其对于高含H2S天然气。