东河天然气站分子筛脱水效果分析及对策研究  

Effect Analysis and Countermeasure Research on the Molecular Sieve Dehydration of Donghe Natural Gas Station

作　　者：肖健[1] 王玉柱[1] 姜培斌 舒丹[1] 王林强 余鹏翔[1] 

机构地区：[1]中国石油塔里木油田分公司

出　　处：《油气田地面工程》2018年第2期41-44,共4页Oil-Gas Field Surface Engineering

摘　　要：针对东河天然气站分子筛脱水效果差,干燥塔出口水露点高于运行要求的问题,对分子筛脱水工艺进行优化探讨。从两列干燥塔偏流、再生气来源和去向、再生温度和压力等方面分析分子筛脱水效果差的原因,通过将再生气工艺流程更改为外输干气、差压再生工艺流程,在两列干燥塔进口增设流量计,以及硅胶和4A分子筛串联等措施,有效降低了干燥器出口水露点(<20℃),提高了分子筛的脱水效果。In view of problems that the dehydration effect of the molecular sieve in Donghe Natural Gas Station is poor and the water dew point of the drying tower outlet is higher than the operation requirement,the of molecular sieve dehydration process is optimized and discussed.Causes of poor dehydration effect of molecular sieve are analyzed from aspects such as bias current of the two columns of drying towers,the source and destination of regeneration gases,regeneration temperature and pressure.Through changing the regeneration gas process flow to exporting dry gas,differential pressure regeneration process flow, flow meters are added to the entrance of the two columns of drying towers. Then measures are taken like making silica gel and 4 A molecular sieve in series. Above measures can effectively reduce the water due point(less than-20 ℃) of the drying tower outlet and increase the dehydration effect of the molecular sieve.

关 键 词：天然气脱水 分子筛 差压再生 再生气 水露点 

分 类 号：TE644[石油与天然气工程—油气加工工程]