【摘要】 油气在生产、储运过程中易形成二氧化碳水合物 ,而二氧化碳水合物的合理利用又可以解决如温室效应等的环境问题。为了考察二氧化碳水合物的分解动力学性质 ,采用改进的气体水合物静力学实验装置 ,测定了二氧化碳水合物在不同温度、压力下的分解动力学数据。将水合物分解反应看作一级反应 ,建立了分解动力学模型 ,计算了二氧化碳水合物的分解速率 ,较好地拟合了所测得的实验数据 ,模型的平均误差为 8.0 %。实验数据验证了二氧化碳水合物的分解速率与压力推动力有关 ,水合物表观分解速率常数与压力推动力成正比。将分解速率常数k以Arrhenius方程描述 ,计算出的二氧化碳水合物分解活化能为 71.4kJ/mol,与文献值相近更多还原

【Abstract】 The experimental apparatus for gas hydrate thermodynamic property was improved to observe the kinetics of decomposition. The experimental data about decomposition of carbon dioxide hydrate at different temperatures and pressures are obtained using this apparatus. The kinetics model of decomposition is built and applied to calculate the decomposition rate which fits the experimental data quite well. The average error is 8.0%. Analysis of the data indicates that the decomposition rate of carbon dioxide hydrate is proportional to the fugacity difference at the equilibrium state pressure and the decomposition pressure. The calculated activation energy of decomposition reaction is 71.4 kJ/mol, which is close to the value in the former literature.更多还原