变压吸附技术分离模拟油田火驱尾气中的CO_2  

Separation of CO_2 from Simulated Oilfield Fireflood Exhaust by Pressure Swing Adsorption Process

作　　者：马国光[1] 刘源海[1] 牟雨 

机构地区：[1]西南石油大学石油与天然气工程学院,四川成都610500

出　　处：《化工环保》2015年第6期579-582,共4页Environmental Protection of Chemical Industry

摘　　要：采用变压吸附技术分离模拟油田火驱尾气(CO_2-N_2-CH_4混合体系)中的CO_2。考察了吸附压力、吸附温度和气体流量对吸附效果的影响。实验结果表明:在吸附温度为25℃、吸附压力为0.6 MPa、气体流量为2 000m L/min、初始CO_2体积分数为13.01%的条件下,CO_2的穿透吸附量为60.34 m L/g,CO_2吸附率为78.92%,碳分子筛对CO_2的分离因子为8.233;在床层利用率为0.523的条件下进行降压解吸,当吸附压力降至0.1 MPa时,出口CO_2体积分数约为80%,CO_2的回收率可达96.38%。CO2 was separated from the simulated oilfield fireflood exhaust （CO2-N2-CH4 mixed system） by pressure swing adsorption process. The effects of adsorption pressure,adsorption temperature and gas flow on separation were studied. The experimental results show that：Under the conditions of adsorption temperature 25 ℃,adsorption pressure 0.6 MPa,gas flow rate 2 000 mL/min and initial CO2 volume fraction 13.01%,the breakthrough adsorption capacity of CO2 is 60.34 mL/g,the CO2 adsorption rate is 78.92%,the CO2 separation factor of carbon molecular sieve is 8.233;Pressure-reducing desorption is carried out when the bed use ratio is 0.523 and when the adsorption pressure is reduced to 0.1 MPa,the outlet CO2 volume fraction is about 80%,the CO2 recover rate can reach 96.38%.

关 键 词：火驱尾气 变压吸附 二氧化碳分离 碳分子筛 

分 类 号：TE65[石油与天然气工程—油气加工工程]