加氢裂化脱硫化氢汽提塔操作优化研究  

Operation optimization of hydrogen sulfide removal stripperin hydrocracking unit

作　　者：黄海鹏[1] Huang Haipeng(SINOPEC Maoming Petrochemical Company,Maoming,Guangdong 525000)

机构地区：[1]中国石油化工股份有限公司茂名分公司,广东省茂名市525000

出　　处：《炼油技术与工程》2021年第8期23-27,共5页Petroleum Refinery Engineering

摘　　要：基于加氢裂化装置实际运行数据,应用模拟软件Aspen Plus,构建脱硫化氢汽提塔模拟流程,借助热力学决策专家系统,选用ELECNRTL对低分油脱硫化氢过程进行模拟分析与操作优化。分别考察汽提蒸汽消耗量、冷低分油进料温度、进料位置以及热低分油进料位置等关键参数对汽提塔脱硫效果和能耗的影响。脱硫化氢汽提塔模拟优化结果表明,现有操作工况下汽提蒸汽过量,用能不合理。配合热低分油进料位置调整,汽提蒸汽量从3.5 t/h降至1.5 t/h,同时,结合装置换热网络综合分析,遵循高热高用和能量梯级利用原则,提出冷低分油预热流程的改进优化措施,通过高温位热量的合理利用,有效提高装置总体用能效率。Based on the operation data of the hydrocracking unit,the simulation process of hydrogen sulfide removal stripper is constructed by Aspen Plus software,and ELECNRTL is used to simulate and optimize the process of hydrogen sulfide removal of oil from low pressure separator.The effects of key parameters,such as stripping steam consumption,feed temperature and feed position of oil from cold low pressure separator,feed position of oil from hot low pressure separator,on hydrogen sulfide removal efficiency and energy consumption of stripper are investigated.The results show that under the existing operating conditions,the stripping steam is excessive,and the energy consumption is unreasonable.With the adjustment of feed position of oil from hot low pressure separator,the stripping steam consumption reduces from 3.5 t/h to 1.5 t/h.Combined with the comprehensive analysis of the heat exchange network of the unit,following the principles of high heat high utilization and energy cascading utilization,the improvement and optimization measures for the preheating process of oil from cold low pressure separator are put forward.Through the rational use of high temperature potential heat,the overall energy efficiency of the unit is effectively improved.

关 键 词：加氢裂化 脱硫化氢汽提塔 冷低分油 热低分油 蒸汽耗量 进料温度 进料位置 

分 类 号：TE962[石油与天然气工程—石油机械设备]