摘要
CO_(2)驱油技术引起的伴生气中高含量的CO_(2)气体不仅影响伴生气品质且增加了碳排量,不符合国家“双碳”目标的相关要求。目前国内对CO_(2)驱油采出伴生气中CO_(2)气体的捕集及回收利用的研究较少。以长庆油田CO_(2)驱油与埋存示范区伴生气处理流程为基础,通过Unisim软件模拟的方式,得出了CO_(2)驱油采出伴生气中CO_(2)气体的捕集及液化流程中的关键参数。模拟结果显示,膜加变压吸附的工艺可使分离后的CO_(2)气体纯度和天然气纯度均达到95%以上;捕集的CO_(2)气体在脱水及冷却提纯后纯度可超过99%。模拟结果可以为天然气加工过程中的天然气组分预分离工艺的选取提供参考。
The high content of CO_(2) gas in the associated gas caused by the CO_(2) flooding technology not only affects the quality of the associated gas,but also increases the carbon emissions,which does not meet the relevant requirements of the national“carbon peaking and carbon neutrality”goals.At present,there are few studies on the capture and recovery of CO_(2) gas in the associated gas produced by CO_(2) flooding.Based on the associated gas treatment process in the CO_(2) flooding and burial demonstra-tion area of Changqing Oilfield,the key parameters of CO_(2) gas capture and liquefaction process in the associated gas produced by CO_(2) flooding are obtained through Unisim software simulation.The simula-tion results show that the membrane+pressure swing adsorption process can make the purity of separat-ed CO_(2) gas and natural gas more than 95%,and the purity of CO_(2) captured by the membrane+pres-sure swing adsorption process can exceed 99%after dehydration and cooling purification.The simulation results can provide a reference for the selection of the natural gas component pre-separation processes in natural gas processing.
作者
穆中华
张平
白剑锋
郄海霞
林亮
王昌尧
胡兵
MU Zhonghua;ZHANG Ping;BAI Jianfeng;QIE Haixia;LIN Liang;WANG Changyao;HU Bing(Changqing Engineering Design Co.,Ltd.)
出处
《油气田地面工程》
2023年第7期1-5,共5页
Oil-Gas Field Surface Engineering
基金
国家科技重大专项“CO_(2)捕集、驱油与埋存技术示范工程”(2016ZX05056003)。
