CH_4+C_2H_4气体混合物的水合物相平衡  

GAS-HYDRATE EQUILIBRIA FOR MIXTURES OF METHANE AND ETHENE

作　　者：张凌伟[1] 陈光进[1] 

机构地区：[1]石油大学高压相态与物性研究室,北京102249

出　　处：《化工学报》2003年第z1期76-80,共5页CIESC Journal

基　　金：国家自然科学基金(No.20176028;90210020)

摘　　要：实验考察了CH_4+C_2H_4+THF+水混合体系在一定温度(276.15～282.15K)、压力(2.0～3.0MPa)和THF水溶液浓度(THF摩尔分数60％～12.0％)范围内的气体-水合物相平衡情况。结果表明:富水相中THF的加入大大地阻碍了水合物孔穴中C_2H_4的进入,使得乙烯在气、固两相中的分配发生了逆转,乙烯在气相中被提浓,而无THF存在时乙烯则是在水合物相中得到富集。The gas-hydrate equilibria were measured in detail for CH_4+C_2H_4+tetrahydrofuran (THF) water systems in the temperature range of 276.15-282.15 K, pressure range of 2.0-3.0MPa and THI mole fraction range of 6.0%-12.0% in initial aqueous solution. The results demonstrated that th occupancy of ethene in hydrate cages was inhibited extremely by adding THF to water-rich phase. With the existence of THF in aqueous solution, the distribution of ethene in gas phase and hydrate phas reversed dramatically and ethene was enriched in gas phase, however, ethene would be enriched in hydrate phase without THF.

关 键 词：气体-水合物相平衡 四氢呋喃 甲烷 乙烯 

分 类 号：TQ-55[化学工程]