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催化裂化装置(FCCU)回收系统的用能状况在很大程度上影响FCCU的能耗水平。本文通过严格的(火用)分析,对FCCU回收系统的用能状况进行了定量的分析与评价。文中首先介绍了利用PRO/Ⅱ计算物流物理(火用)的方法。在此基础上,采用三环节模型,对某150万吨/年规模FCCU的回收系统进行了(火用)分析。结果表明:(火用)回收率仅为37.6％,节能潜力巨大;降低(火用)耗散是节能改进的主要潜力之所在。并找出了系统(火用)损失的最大薄弱环节——分馏塔。
The energy usage of the FCCU recovery system has a significant effect on the FCCU’s energy consumption. This article through a rigorous (exergy) analysis of the FCCU recycling system, the status of the energy used for quantitative analysis and evaluation. The paper first introduced the use of PRO / Ⅱ logistics physics (exergy) method. On this basis, an exergy analysis of a FCCU recycling system with a capacity of 1.5 million tons / year was conducted by using the three-link model. The results show that: (Exergy) recovery rate of only 37.6%, huge potential savings; reduce (exergy) dissipation is the main potential for energy-saving improvement. And found the system (exergy) the biggest weakness - fractionation tower.