盐卤伴生气用作CNG的脱水脱重烃撬装化技术方案研究  

Using salt-brine associated gas in skid-mounted technology scheme for dehydration and removing water heavy hydrocarbons from CNG

作　　者：李良均[1] 马宁[1] 王治红[2] LI Liang-jun;MA Ning;WANG Zhi-hong(Sichuan Kehong Petroleum and Natural Gas Engineering Co,Ltd,Chengdu 610213,China;Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]四川科宏石油天然气工程有限公司,四川成都610213 [2]西南石油大学,四川成都610500

出　　处：《现代化工》2019年第1期222-226,共5页Modern Chemical Industry

摘　　要：提出了盐卤伴生气脱水脱烃的4种撬装化技术方案:预增压+GWF方案、级间抽出+GWF方案、预增压+丙烷制冷方案和级间抽出+丙烷制冷方案,通过模拟计算获得了各方案的主要工艺参数,并对各个方案的投资、能耗进行了对比分析。结果表明,2种级间抽出方案不如2种预增压方案的工艺简单,在投资、能耗、装置的稳定性方面均不具优势;预增压+GWF方案虽然在能耗方面较预增压+丙烷制冷方案略高,但它在投资、管理、操作、维护以及收益方面均优于后者,且无需考虑水合物冻堵问题。因此,该盐卤伴生气用作CNG利用的脱水脱烃撬装化技术方案中,预增压+GWF方案是4种方案中最具优势的一种。Four skid-mounted technology schemes are proposed,including pre-pressurization + GWF scheme,interstage pressure boosting+GWF scheme,pre-pressurization+propane refrigerant cycle scheme and interstage pressure boosting + propane refrigerant cycle scheme. Through analog computation,the primary technological parameters are obtained for four schemes,and the investment and energy consumption for each scheme is compared and analyzed.Consequently,it is proved that two interstage pressure boosting schemes are inferior to two pre-pressurization schemes in terms of process simplicity,investment,energy consumption and facility stability. Although the pre-pressurization + GWF scheme needs higher energy consumption than the pre-pressurization+propane refrigerant cycle scheme,it is superior to the latter in terms of investment,management,operation,maintenance and profit,and it does not exist the problem of freezing and plugging of hydrate. So there comes to a conclusion that the pre-pressurization + GWF scheme is the best among the four schemes.

关 键 词：伴生气 CNG 超音速分离 脱水脱重烃 撬装装置 

分 类 号：TE644[石油与天然气工程—油气加工工程]