乙烯装置急冷油系统存在的问题及改进措施  

Problems and improvement measures for quench oil system in ethylene plant

作　　者：魏凯[1] 马永利[1] 张成[2] 张顺强[1] 熊华伟[1] 

机构地区：[1]中国石油兰州石化公司乙烯厂,甘肃兰州730060 [2]北京师范大学珠海分校工程技术学院,广东珠海519087

出　　处：《石化技术与应用》2011年第4期346-349,共4页Petrochemical Technology & Application

摘　　要：分析了中国石油兰州石化公司46万t/a乙烯装置急冷油塔塔釜温度偏低的原因并提出了相应改进措施。改进措施:(1)将急冷油循环量由250 t/h降低为50 t/h;(2)将燃料油汽提塔塔顶平均温度提高2℃;(3)将急冷油塔入口裂解气平均温度提高4℃。改进效果:(1)急冷油塔塔顶温度平均提高2℃;(2)急冷油塔塔釜温度平均提高3℃;(3)稀释蒸汽发生量提高6 t/h。The reasons led to lower temperature at the bottom of quench oil column in the 460 kt/a ethylene plant of Lanzhou Petrochemical Company were analyzed,and the corresponding improvement measures were proposed：（1）decreasing the circulation of quench oil from 250t/h to 50t/h;（2）increasing the average temperature by 2℃ at the top of fuel oil stripping column;（3）increasing the average temperature of pyrolysis gas by 4℃ at the inlet of quench oil column.After the measures were taken,the following effects were obtained：（1）the average temperature increased by 2,3℃ at the top and the bottom of quench oil column,respectively;（2）the output of dilution steam increased by 6t/h.

关 键 词：乙烯装置 急冷油塔 塔釜温度 原因分析 

分 类 号：TQ221.211[化学工程—有机化工]