基于含水油气冷凝回收模拟的状态方程筛选及工艺优化

发布时间：2018-05-14 22:40

本文选题：油气回收 + 水蒸气　；参考：《石油学报(石油加工)》2017年05期

【摘要】：在油气冷凝回收的模拟中,油气-空气混合气中的水分会对模拟过程产生较大影响,并且模拟计算采用何种状态方程也尚无定论。为此,利用Aspen plus模拟软件研究了含水油气状态方程和有效相态的选择对冷凝模拟灵敏度的影响,并对现有的三级冷凝工艺进行优化,以提高冷凝法油气回收率。结果表明,当油气组分中不含水蒸气时,常规状态方程(PENG-ROB,RK-SOAVE,SRK,PR-BM,RKS-BM)都能满足计算需要;当油气组分中含水蒸气时,状态方程不能选择SRK,有效相态设置应选择汽-液-液相或汽-液-结合水相;三级冷凝油气回收工艺宜设置2个单独的回收罐,1个不保温的回收罐收集预冷级的高含水冷凝产物,另1个保温的回收罐收集二级和三级的冷凝产物。
[Abstract]:In the simulation of oil and gas condensing and recovery, the moisture in the mixture of oil-gas and air will have a great influence on the simulation process, and the equation of state used in the simulation calculation has not been decided. For this reason, the influence of the state equation of oil-gas bearing water and the choice of effective phase on the sensitivity of condensing simulation was studied by using Aspen plus simulation software, and the existing three-stage condensing process was optimized to improve the oil and gas recovery rate of condensing method. The results show that the conventional equation of state (PENG-ROB), RK-SOAVEN SRK, PR-BMU RKS-BMM, can meet the calculation needs when there is no water vapor in the oil and gas components, and when the oil and gas components contain water vapor, the conventional equation of state can meet the needs of calculation. SRK can not be selected in the equation of state, and the effective phase should be set in the form of vapor-liquid phase or vapor-liquid-bound water phase. Two separate recovery tanks should be set up in the three-stage condensing oil and gas recovery process, one uninsulated recovery tank should collect high water-cut condensate products of pre-cooling grade, and the other heat preservation recovery tank should collect secondary and third-order condensate products.
【作者单位】：常州大学油气储运技术省重点实验室;常州大学石油化工学院;
【基金】：国家自然科学基金项目(51574044,21276029) 江苏省高校“青蓝工程”资助项目(SCZ1409700002) 江苏省科技成果转化专项资金(BA2015166) 常州市科技支撑计划(工业)项目(CE20150085)资助
【分类号】：TE89

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