Abstract: Based on the field data collected from a FCC unit in a refinery，an energy conservation process for the absorber-stripper-stabilizer system were developed，which is composed of pre-equilibrated process（PP），two stage condensation process（TSCP）and integration process（IP）. The performances of these three different processes were compared comprehensively with the conventional process（CP）using a process simulation approach. It was proved that all the three processes showed distinct energy conservation effect with comprehensive energy consuming reduction of 4.55% for PP，11.79% for TSCP and 17.82% for IP，which would lead to remarkable economic benefits. The fuel gas mass flow rate was decreased in PP while the quality of fuel gas was improved in TSCP and IP. Therefore，all the three processes were favorable to the recovery of the valuable heavy components in fuel gas. TSCP and IP were the better choice for improving the total C3 recovery rate，while PP and IP were better for the recovery of C4 components. Liquefied petroleum gas（LPG）and debutanized gasoline（DG）yields were improved in PP，while LPG yield was decreased slightly and DG yield was increased a little in TSCP.

摘要： 基于某炼厂0.8 Mt/a催化裂化装置的现场数据，在流程分析和工艺模拟的基础上，研究开发了吸收稳定系统节能型工艺流程，并综合比较了各工艺流程的处理效果。研究结果表明：采用吸收塔预平衡流程、二级冷凝流程和复合流程后，吸收稳定系统综合能耗每年分别减少4.55%、11.79%、17.82%，具有显著经济效益；吸收塔预平衡流程干气流率得到降低，二级冷凝流程及复合流程干气质量得到提高，因此有利于回收干气中重组分；二级冷凝流程和复合流程有利于提高总C3回收率，吸收塔预平衡流程和复合流程有利于提高总C4回收率；吸收塔预平衡流程有利于提高液化气和稳定汽油收率，二级冷凝流程液化气流率略微降低，稳定汽油收率略微增加。