甲烷与二氧化碳混合气体水合物的分解过程模拟

Simulation on Decomposition of CH_4-CO_2 Mixed Gas Hydrate

甲烷与二氧化碳混合气体水合物的分解是一个有待研究的问题。运用现有关于气体水合物结构的研究成果,得出了这样的结论:甲烷与二氧化碳混合气体水合物每个晶胞中含有一定数量的甲烷分子和二氧化碳分子,该混合气体水合物分解时分为晶格的破裂和气体分子的脱附两个步骤;结合化学反应、吸附与传质理论,导出了甲烷与二氧化碳混合气体水合物分解的动力学模型,该模型适合纯水中悬浮的气体水合物粒子线性分解速率的计算。

The decomposition of the mixed gas hydrate of methane and carbon dioxide is an issue deserved to be researched. Based on the existing results about the structure of gas hydrate, conclusions were obtained that in each crystal unit of the mixed gas hydrate there exists a definite number of methane molecules and carbon dioxide molecules and the decomposition process was composed of two stages----the destruction of the lattices and ~ desorption of gaseous molecules. Combined the theory of chemical reaction, adsorption with that of mass transfer, a kinetic model for the decomposition of the mixed hydrate of methane and carbon dioxide was established, which was appropilate to describe the linear decomposition rote of gas hydrate particles suspended in the water.