S Zorb汽油精制脱硫装置运行常见问题分析及解决方法

摘要

以中国石化某公司1.5 Mt/a汽油精制脱硫装置为研究对象,介绍了汽油精制脱硫装置工艺改进后的运行情况,分析装置运行中进料换热器E101结焦与反应器接收器D105脱气线磨损泄漏的问题,总结经验,提出对策,从而达到安全生产的目的.结果表明:S Zorb装置实际运行生产中严格控制原料来源,禁止高胶质含量汽油或非透明的汽油组分进入装置,是保证进料换热器E101长周期运行的重要前提条件;反应器接收器D105汽提氢气量及线速控制在合理范围的同时,升级脱气线的材质.另外,严格控制系统内的细粉量,定期对管线薄弱环节加强测厚,保证装置长周期运行.%Taking the S Zorb gasoline desulfurization S Zorb unit(1.5 Mt/a)in a SINOPEC company as a research subject,this study introduced the running conditions after improvement of the unit.Two typical problems during operation were analyzed:(i)coking in feed heat exchanger E101 and(ii)degassing line wear leakage of D105 for receiving the used catalyst.The results showed that(i)strictly controlling the raw material source and prohibiting the gasoline with high content of gum or the non-transparent gasoline entering into the S Zorb equipment are important to ensure the long period operation for feed heat exchanger E101;(ii)controlling the hydrogen flow rate of D105 for extraction and line speed in a reasonable range,at the same time,upgrading the material of degassing line.And(iii)in addition,strictly controlling the amount of fine powder in the system;and periodically measuring the thickness of the weak point of pipeline to ensure the long period operation of the unit.