【摘要】 针对气驱强化采油(EOR)过程所产生的低品质伴生气,提出以4A分子筛和活性炭为吸附剂,通过变压吸附法(PSA)进行分离,回收部分轻烃,捕碳返注地下的工艺。通过实验测定吸附剂的参数,建立上述工艺的数学模型,完成动态模拟。模拟结果表明:第1阶处理后,轻产品气中烃类纯度为64.37%;第2阶处理后,轻产品气中轻烃含量为64.35%;工艺的二氧化碳回收率为90.79%,轻烃回收率为70.67%,具有良好的环境效益。更多还原

【Abstract】 Enhanced oil recovery（EOR） process might release some low-quality associated gas. 4 A molecular sieve（4 A） and activated carbon（AC） were used as adsorbents for separation by two-stage vacuum pressure swing adsorption（VPSA）. Isotherm of adsorbents was determined and calculated, and mathematical models were established. The simulation results show that the purity of hydrocarbons in light product gas is 64.37% after the first stage treatment, while that of the second stage is 64.35%. The recovery of CO₂ is 90.79%, and that of light hydrocarbon is 70.67%, which shows environmental and economic benefits.更多还原