三甘醇脱水的计算机模拟分析  

Analysis on Computer Simulation of TEG Dehydration

作　　者：袁宗明[1] 王勇[1] 贺三[1] 崔梦梦[1] 宋欢欢[1] 

机构地区：[1]西南石油大学,四川成都610500

出　　处：《天然气与石油》2012年第3期21-26,99,共6页Natural Gas and Oil

基　　金：四川省重点学科建设基金资助项目(SZD0416)

摘　　要：为了提高三甘醇脱水效果,有必要考察各种因素对脱水效果的影响。采用HYSYS软件对处理量为15×104m3/d的三甘醇处理装置进行定量分析。通过计算可知,一定范围内,降低湿天然气和贫甘醇进塔温度,提高贫甘醇浓度、TEG循环量、操作压力或者增加塔板数,脱水效果加强。在本装置中,湿天然气和贫TEG溶液的最佳进塔温度分别为30℃和36℃。理论塔板数为2,操作压力为6.4MPa,贫TEG溶液浓度为98.8%,循环量为0.3 m3/h时,天然气水露点从32℃降至-8.647℃。同时,引入少量汽提气可以大幅度降低脱水后干气的水含量,增强脱水效果。In order to improve TEG dehydration effect,it is necessary to research the effect of various factors on dehydration.Adopted is HYSYS software to quantitatively analyze and calculate the TEG dehydration unit with a capacity of 15x104 m3/d and calculation results show that dehydration effect will be obviously improved if lowered properly is temperature of wet gas and lean glycol entering the dehydration unit,increased are lean glycol concentration,circulation volume and operating pressure of TEG or increased are number of tower trays.In this unit,the optimal temperatures of wet natural gas and lean glycol entering the dehydration unit are 30℃ and 36℃ respectively.The water dew point drops from 32℃ down to-8.647℃ when theoretical number of tower trays is 2,the operating pressure of TEG is 6.4MPa,lean glycol solution concentration is 98.8% and circulation volume of TEG is 0.3 m3/h.Meanwhile,water content of dried gas after dehydration will be substantially and dehydration effect can be obviously improved if a small amount of stripping gas is led into.

关 键 词：天然气 甘醇脱水 影响因素 模拟计算 

分 类 号：TE868[石油与天然气工程—油气储运工程]