【摘要】 对描述水合物生成过程的Langmuir方程进行了研究,指出了其应用时的局限性;将动力学成核机理中的能量变化分为3部分,提出了动力学模型模拟计算的改进方法,并据此计算出气体水合物吸附过程中受温度和压力影响的动力学因素——成核临界半径,关联出成核半径与能量和温度的关系.计算结果表明,水合物的生成焓变、Gibbs自由能和临界半径随温度升高分别升高、降低、降低.更多还原

【Abstract】 Langmuir equation used in depicting natural gas hydrate formation is studied. The limitations of the equation are pointed out. Energy variation of gas hydrate dynamic formation mechanism is divided into three parts, and its improved method of dynamic model imitation calculation is put forward; and in view of the above calculations, the dynamic factor-critical radii affected by temperature and pressure in natural gas hydrate formation is worked out,and the relationship between energy variations and critical radii and temperatures are also associated. The computational solution shows that hydrate forming enthalpies, Gibbs free energy and critical radii ascend, descend and descend with temperature′s heightening separately.更多还原