含盐和甲醇体系中气体水合物的相平衡研究 Ⅰ.平衡生成条件的测定  

STUDIES ON PHASE EQUILIBRIA OF GAS HYDRATE IN SYSTEMS CONTAINING SALTS AND METHANOL Ⅰ.Experimental Measurements of Equilibrium Formation Conditions

作　　者：廖健[1] 梅东海[1] 杨继涛[1] 郭天民[1] 

机构地区：[1]石油大学油气藏流体高压相态及物性研究实验室

出　　处：《石油学报（石油加工）》1998年第3期80-84,共5页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金;国家教委博士点基金;中国石油天然气总公司石油科技中青年创新基金

摘　　要：在温度２６０．８～２８１．５Ｋ和压力０．７８～１１．１８ＭＰａ下，采用“压力搜索法”在自行设计和组建的实验装置上测定了一个合成天然气在含盐以及含盐和甲醇水溶液体系中的水合物平衡生成条件，共１１个体系７２个数据点。结果表明，无论对于单盐或多盐水溶液体系，甲醇对天然气水合物的生成均有显著的抑制作用；当溶液中甲醇增加至２０％（质量）时，ＫＣｌ的抑制作用强于ＣａＣｌ２。Gas hydrate equilibrium formation conditions for a synthetic natural gas in aqueous solutions containing salts and methanol were measured using ‘Pressure Search’method on the self setup gas hydrate apparatus,in the temperature range of 260 8～281 5 K and in the pressure range of 0 78～ 11 18 MPa.A total of 11 systems were studied and 72 data points were obtained.It was found that for systems of aqueous solutions containing either single salt or mixed salts,methanol had a marked inhibition effect on the formation of natural gas hydrates.Moreover,the results showed when methanol concentration increased up to 20%,the inhibition effect of KCl was stronger than that of Cl 2.

关 键 词：气体水合物 含盐 甲醇体系 相平衡 天然气加工 

分 类 号：TE646[石油与天然气工程—油气加工工程]