两段提升管催化裂化沉降器内待生剂吸附油气的变化

发布时间：2018-02-27 02:23

本文关键词： 催化裂化(FCC) 待生剂吸附油气汽提化学反应　出处：《石油学报(石油加工)》2017年05期 　论文类型：期刊论文

【摘要】：沉降器内汽提油气的冷凝是造成重油催化裂化装置沉降器结焦的根本原因。为了分析待生剂吸附油气的性质变化,首先通过在线取样获得两段提升管催化裂化装置不同提升管内待生剂,用甲苯抽提提取待生剂上吸附的烃类并进行性质分析;然后在模拟汽提实验装置上进行待生剂的模拟汽提实验,分析汽提过程中的化学反应;最后将汽提油气中的液相组分进行二次热转化实验,探索汽提油气在沉降器稀相空间的热转化行为。结果表明,二段提升管待生剂吸附油气较多,馏程偏重,饱和分和氢含量很低;汽提过程中的化学反应以热裂化为主,二段待生剂吸附油气的反应较弱,重油收率较高,而且经过二次热裂化反应后,二段汽提油气重油收率仍然高于50%。因此二段提升管待生剂汽提油气会对两段提升管催化裂化沉降器的结焦产生重要影响。
[Abstract]:The settlement of the condenser stripping gas causes the RFCC disengager coking. In order to change to the analysis of adsorption of oil and gas, first through the online sampling of two stage riser catalytic cracking device with different riser to toluene extraction agent, extraction of hydrocarbon adsorption agent the properties and analysis; then in the simulation of stripping experiment Simulation for steam agent extraction experiment, analysis of the stripping process of chemical reaction; the stripping of oil and gas in the liquid component of two thermal transformation experiments, explore the stripping of oil and gas in the thermal conversion of disengagers dilute phase space. The results show that the two stage riser for oil and gas adsorption agent more emphasis saturates and distillation, hydrogen content is very low; the chemical reaction in the stripping process with thermal cracking, two for adsorption of oil and gas was weaker, heavy oil yield is High, but after two times of thermal cracking reaction, two stage stripping gas oil yield is still higher than 50%. so the two lift stripping agent for oil and gas will have a significant impact on the two stage riser catalytic cracking coking reactor tube.

【作者单位】：中国石油大学重质油国家重点实验室;
【基金】：国家自然科学基金项目(21476263和21606254)资助
【分类号】：TE624.41

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