摘要
针对某公司新建220万t/a催化裂化装置换热流程,采用PROII流程模拟软件对解吸、稳定系统的传质、传热过程进行流程模拟,以确定该系统最佳的节能方案。模拟结果表明,稳定塔进料状态对其最佳的进料位置略有影响;稳定塔进料换热器40%左右的热负荷转移到塔底,代替塔底重沸器的部分负荷,其余60%左右的热负荷转移到塔顶,需要消耗循环水或电能进行冷却;取消稳定塔进料换热器,稳定塔底油直接作为解吸塔底重沸器热源将更有利于降低解吸、稳定系统的能量消耗。
For the heat transfer flow of the grassroots 2.2Mt/a FCC unit,PROII software was used to simulate the mass and heat transfer of the desorption and stabilization system for energy conservation.The results showed that the feed conditions had an impact on the feed location,and about 40% of the thermal load of debutanizer feed heat exchanger was transferred to the bottom of the tower to replace part of the reboiler thermal load while the remaining60% was transferred to the top of the tower to be cooled by circulating water or electricity. Also the energy consumption of the desorption and stabilization system was reduced by eliminating the debutanizer feed heat exchanger and directly using the debutanizer bottoms as the heat source for the bottom reboiler of desorption tower.
出处
《石油化工设计》
CAS
2015年第3期45-48,7,共4页
Petrochemical Design
关键词
催化裂化
解吸塔
稳定塔
节能
FCC
Desorption tower
Debutanizer
Energy conservation
