影响水合物形成条件因素敏感性分析  

The Sensitivity Analysis of the Factors Influencing on the Hydrate Formation

作　　者：宋立群[1] 李玉星[1] 陈玉亮[1] 王武昌[1] 

机构地区：[1]中国石油大学(华东),青岛266555

出　　处：《科学技术与工程》2011年第21期5075-5079,共5页Science Technology and Engineering

基　　金：教育部新世纪人才支持计划(NCET-07-0847);国家自然基金(51074175)资助

摘　　要：针对天然气水合物的形成条件影响因素,通过实验测试手段,研究了天然气水合物形成时天然气的组成、酸气含量、水的矿化度、醇类等各种因素对形成的压力温度条件的影响。通过大量的实验数据得出:天然气的组成以及各组分的摩尔份数直接影响水合物形成的热力学条件。在一定的压力下,水的含盐量越高,水合物的生成温度越低。当天然气中含有CO2和H2S等酸性气体时,将提高水合物的生成温度和降低水合物的生成压力,特别是硫化氢的影响尤为显著。醇类和电解质体系对水合物的形成具有较大的抑制作用,相同浓度甲醇的效果优于乙二醇,相同浓度NaCl的抑制效果比CaCl2好。Many factors such as the composition,acids content,salinity and the alcohol content,influence the formation of the gas hydrate.In order to understand the relationship between the formation conditions and the factors,many data are obtained in the lab test device and obtained that.The gas composition and fraction of each component directly affects the molar thermodynamic hydrate formation conditions.At a certain pressure,the higher the salt content of water,hydrate formation temperature is lower.When the gas containing acid gases such as CO2 and H2S,it will enhance the hydrate formation temperature and reduce the hydrate formation pressure,especially the impact of hydrogen sulfide is particularly significant.Alcohols and electrolytes on the formation of large hydrate inhibition,the same concentration of methanol is better than ethylene glycol,the same concentration the inhibitory effect of NaCl better than CaCl2.

关 键 词：天然气水合物 形成条件 影响因素 

分 类 号：TQ542.4[化学工程—煤化学工程]