油页岩闪速干馏油气回收工艺设计及模拟

针对闪速干馏工艺特点, 设计了一套适合高温油洗法回收油气工艺, 并结合中试装置现场数据, 运用A s p e nP l u s软件进行了工艺模拟。油洗工艺可将页岩油粗分为重油、 重柴油馏分、 轻油馏分、 汽油馏分。该工艺副产水蒸气, 具有油损失小、 能耗低、 可减轻环境污染等特点, 采用该回收工艺, 可大幅度提升干馏油气的回收率, 重油洗涤塔可回收3 9. 7%的油蒸气, 重柴油洗涤塔可回收6 0. 3%的油蒸气, 与传统工艺相比回收率可提高1 0%~2 0%。

Simulation and Design of Shale Flashing Retorting Recovery Oil and Gas

According to the process characteristics of flashing retorting process, a set of suitable for high temperature oil washing oil vapor recovery technology was designed, combined with pilot plant field data, using plus Aspen software for process simulation. Shale oil was separated to heavy oil, heavy diesel oil, light oil fraction and gasoline fraction by the oil washing method. The process produced steam as by product and it had the advantages of high recovery rate, low oil loss, low energy consumption, and could effectively avoided environmental pollution. Using this process, the rate of gas recovery could be greatly enhanced: crude oil washing tower could recycle 39.7% of the oil steam, heavy diesel oil washing tower could recycle 60.3% of the oil steam. Compared with the traditional process, it could improve the recovery rate of 10%-20%.