加氢裂化装置改炼FCC柴油的开工及标定

为解决FCC柴油后路问题,中国石油化工股份有限公司茂名分公司对1号加氢裂化装置进行了改造,加工FCC柴油生产高辛烷值汽油。标定结果表明,通过更换催化剂,采用部分循环的操作方式,在一定的氢分压、精制反应平均温度为394℃、裂化反应平均温度为400℃的条件下,可生产辛烷值88的汽油馏分,反应的转化率为40.4%,汽油的收率为26.53%,装置能耗为1 582.97 MJ/t;将精制反应温度降到392℃,裂化反应温度提高到401℃时,汽油馏分的辛烷值可提高到91,反应转化率为39.1%,汽油收率24.42%,装置能耗为1 590.07 MJ/t。同时,对装置运行存在的问题进行了分析,需要通过调整反应系统压力以及循环氢纯度来优化装置的运行。

Start-up and performance test hydrocracking unit processing FCC diesel

To solve the outlet problem of FCC diesel,the No.1 hydrocracking unit in SINOPEC Maoming Company was revamped and operated to process FCC diesel to produce high-octane gasoline.The performance tests showed that,the gasoline with 88 octane number was produced after replacement of catalysts,application of partial recycle and operation under the operating conditions of a cetain hydrogen partial pressure,394 ℃ mean refining reactor temperature and 400 ℃ mean cracking reactor temperature,the reaction conversion is 40.4％,the gasoline yield is 26.53％,the energy consumption of the unit is about 1 582.97 MJ/t.When the mean refining reactor temperature is reduced to 392 ℃ and the mean cracking reactor temperature is raised to 401 ℃,the octane number of gasoline is raised to 91,the reaction conversion is 39.1％,the gasoline yield is 24.42％ and energy consumption of the unit is 1 590.07 MJ/t.The existing problems of the unit have been analyzed and reaction pressure and purity of recycle hydrogen have been adjusted to optimize the unit operation.