加氢提馏塔运行异常分析及优化  

Analysis and Optimization of Abnormal Operation of Hydrogenation Distillation Column

作　　者：何文建 赵传明 He Wenjian;Zhao Chuanming(Alkyl Benzene Plant of Jinling Petrochemical Co.,Ltd.,Nanjing 210046,China)

机构地区：[1]金陵石化有限公司烷基苯厂,江苏南京210046

出　　处：《化工设计》2024年第2期25-30,34,1,共8页Chemical Engineering Design

摘　　要：煤油加氢精制装置提馏塔经过运行,存在底部nC_(10)损失率高、塔底热油用量高、塔底换热器堵塞等诸多问题。针对问题进行逐一分析,发现精馏塔分离效果下降导致底部nC_(10)损失率高、塔底精制煤油nC_9含量高,塔底换热器都是检修以后初期使用容易发生堵塞,换热器换热效果降低是由于装置波动导致换热器结垢,从而造成换热效率降低。因此逐一采取措施,利用ASPEN PLUS分析、优化提馏塔,在精馏塔塔底至出料换热器之间增加一台篮式过滤器,利用检修机会对部分换热器进行清理,优化精馏塔热负荷。措施实施后,产品收率得到提高,装置能耗降低,塔底堵塞问题得到解决,换热器换热效率得到提高,以达到了节能降耗的目的,相关经验和做法可为同行借鉴。After running of the distillation column of kerosene hydrofining unit,there are many problems,such as high nC_(10) loss rate at the bottom,high consumption of hot oil at the bottom of the column,and blockage of the heat exchanger at the bottom of the column.The workshop analyzes the problems one by one and finds that the decrease in separation efficiency of the distillation column results in a high loss rate of nC_(10) at the bottom and a high content of refined kerosene nC9 at the bottom of the column.The heat exchanger at the bottom of the column is prone to blockage during initial use after maintenance,and the reduced heat exchange efficiency of the heat exchangers is due to plant fluctuations causing fouling of the heat exchanger,resulting in a decrease in heat exchange efficiency.The workshop takes measures one by one,using ASPEN PLUS analysis to optimize the distillation column.An additional basket filter is added between the bottom of the distillation column and the discharge heat exchanger.Take advantage of the maintenance opportunity to clean some heat exchangers and optimize the heat load of distillation column.After the implementation of the measures,the product yield is improved,and the energy consumption of the plant is reduced.The problem of column bottom blockage is solved,and the heat exchange efficiency of the heat exchanger is improved,achieving the goal of energy conservation and consumption reduction.The relevant experience and practices can be used for reference by peers.

关 键 词：煤油加氢装置 提馏塔 损失率 换热效果 过滤器 清理 优化 

分 类 号：TE9[石油与天然气工程—石油机械设备]