新建汽油加氢装置适应油品升级的工程实践

Engineering practice for upgrading of oil products by construction of new gasoline hydrotreating units

以某炼油厂新建900 kt/a催化汽油加氢脱硫装置为例,介绍采用选择性加氢脱硫技术如何降低催化汽油中的硫含量,以满足目前国Ⅳ汽油硫质量分数小于50μg/g标准要求;并针对目前汽油质量升级步伐的加快,介绍了在新建催化汽油加氢脱硫装置中不仅在现阶段满足国Ⅳ汽油标准要求,而且在不改动主体设备的前提下平稳过渡到国Ⅴ汽油硫质量分数小于10μg/g标准的设计思路。其主体设备如反应器、加热炉根据处理量和负荷采用"一步到位"的设计方法;而循环氢压缩机和新氢压缩机则根据机型的大小分别采取了"预留位置"和"一步到位"的设计方法。由此不仅满足目前的生产要求,也为将来向国Ⅴ汽油的顺利升级奠定了基础。

In a 900,000 TPY FCC gasoline hydrodesulfurization unit of a refinery,selective hydrodesulfurization process has been selected to reduce sulfur in FCC gasoline to meet 50 ppm specifications of sulfur in Guo 1Ⅳ gasoline.As the gasoline quality is upgraded rapidly,the design of the new FCC gasoline hydrodesulfurization units should take into consideration not only meeting the Guo Ⅳ gasoline standard but also gradually meeting the Guo Ⅴ gasoline standard of 10 ppm sulfur without changes of main equipment.The design of main equipment such as reactor and furnaces should satisfy the requirement of producing Guo Ⅴ gasoline.The designs of recycle gas compressor and make-up hydrogen compressor are either capable of producing Guo Ⅴ gasoline or Guo Ⅳ gasoline with foundation reserved for future upgrading to produce Guo Ⅴ gasoline based upon sizes of the equipment.