乙烯水合物膜生长动力学  

Film growth kinetics of ethylene hydrate

作　　者：罗虎[1] 陈光进[1] 彭宝仔[1] 

机构地区：[1]中国石油大学(北京)重质油国家重点实验室,北京102249

出　　处：《化工学报》2006年第8期1865-1870,共6页CIESC Journal

基　　金：国家自然科学基金项目(20490207);教育部科学技术研究重点项目(105107).~~

摘　　要：利用显微放大技术测定了不同温度(274.1～280.1K)、压力(0.80～4.38MPa)下乙烯水合物膜在乙烯气泡表面生长的动力学数据,采用量纲1Gibbs自由能差作为推动力对数据进行关联建模,得到了乙烯水合物膜生长动力学模型,并回归出乙烯水合物膜生长表观活化能为61.23kJ·mol-1,指前因子为6.76×1011mm2·s-1,同时,考察了在不同温度下压力对乙烯水合物膜生长速率的影响.The growth kinetics of ethylene hydrate was studied by measuring the hydrate film growth rate on the surface of a suspended ethylene bubble in water at temperatures from 274.1 K to 280.1 K over a pressure range of 0.80-4.38 MPa. The dimensionless molar Gibbs free energy difference was used as the driving force to correlate the experimental data. The apparent activation energy of 61.23 kJ·mol^-1 and the pre-exponential factor of 6.76 × 10^11 mm^2·s^-1 were determined by regression of experimental data. The influence of pressure upon the film growth rate of ethylene hydrate at different temperatures was also investigated.

关 键 词：乙烯 水合物 动力学 悬浮气泡 

分 类 号：TE82[石油与天然气工程—油气储运工程]