Abstract: Shale oil condensation and recovery by oil washing in China has not been developed and applied successfully，so an oil washing technology for condensation and recovery of oil-gas from oil shale retorting was proposed and process simulation was conducted by using software PRO/II. Simulation results showed that the proposed oil washing process was effective for shale oil condensation and recovery，and oil-gas was separated into gas，gasoline，diesel，and heavy oil. However bottom temperature of oil washing tower was low and heat recovery was limited. For improving energy matching and enhancing heat recovery，system optimization was conducted in this study. Heat recovery rate was improved by 14.63% and high grade heat energy was obtained after process optimization. Energy matching was also more reasonable. The optimal value of gasoline reflux flow rate of 3100 kg/h in oil washing tower was recommended by analyzing simulation results.

Key words: shale oil, condensate recovery, oil washing process, process simulation

摘要： 针对我国页岩油冷凝回收油洗工艺尚不成熟的问题，提出了一种用于油页岩干馏油气冷凝回收的油洗工艺，并运用PRO/II流程模拟软件对工艺流程进行模拟，分析模拟结果表明，所提出的油洗工艺能够有效地完成页岩油的冷凝回收，并将油气粗分为净油气、汽油、柴油和重油。针对所提出流程能量利用率低的缺点进行流程改造优化，优化后的热量回收率提高了约14.63%，并且能够获得高品位热源，能量匹配更加合理。同时对油洗塔汽油回流量进行了分析，确定最优的汽油回流量为3100 kg/h。

关键词: 页岩油, 冷凝回收, 油洗工艺, 流程模拟