影响TEG脱水装置BTEX排放的工艺因素分析  

Process factors controlling BTEX emission from TEG dehydration unit

作　　者：刘佳[1] 邓道明[1] 何思宏 

机构地区：[1]中国石油大学(北京)油气管道输送安全国家工程实验室,城市油气输配技术北京市重点实验室,北京102249

出　　处：《现代化工》2015年第8期160-164,共5页Modern Chemical Industry

摘　　要：为了合理设计和优化操作TEG脱水装置,减少BTEX的排放,对TEG脱水装置工艺过程进行模拟计算,分析了原料气压力、温度、流量,TEG循环量,闪蒸压力、温度,汽提气量,再沸器温度,吸收塔塔板数及塔板效率对露点降和BTEX排放的影响。可以得出,TEG循环量是影响BTEX排放的一个重要因素。BTEX的排放量随着进气温度、闪蒸温度的增大而减小;BTEX的排放量随着原料气压力、原料气流量、闪蒸压力、甘醇循环量、再沸温度、汽提气量的增加而增大。露点降随着进气温度、原料气流量的增加而下降;露点降随着进气压力、TEG循环量、再沸温度、汽提气量的增加而增大。In order to optimize the design and operation of the units and reduce the emission of BTEX,simulation computations for the natural gas TEG dehydration processes are conducted. The factors governing water dew point and BTEX emission, such as feed gas pressure, temperature and flow rate, TEG circulation rate, flash pressure and temperature, stripping gas flow rate, reboiler temperature, plate number and plate efficiency of contactor, are analyzed The results show that the flow rate of TEG circulation is the most important factor for BTEX emission. BTEX emission goes down with the increased feed gas and flash temperature. And BTEX emission increases with the increase in the pressure and flow rate of inlet feed gas, the flash pressure, the glycol circulation rate, the reboiler temperature and stripping gas flow rate. Dew point depression goes down with the increased temperature and flow rate of feed gas, but increases with the pressure of inlet feed gas, the glycol circulation rate, the reboiler temperature and stripping gas flow rate.

关 键 词：页岩气 TEG脱水 露点降 BTEX排放 影响因素 

分 类 号：TE868[石油与天然气工程—油气储运工程] TE644