石油炼制与化工 ›› 2016, Vol. 47 ›› Issue (5): 41-45.

• 催化剂 • 上一篇    下一篇

DN-3636催化剂在柴油加氢装置上的工业应用

郭守权   

  1. 中国石化镇海炼化分公司
  • 收稿日期:2015-09-15 修回日期:2015-11-24 出版日期:2016-05-12 发布日期:2016-04-25
  • 通讯作者: 郭守权 E-mail:guosq.zhlh@sinopec.com

COMMERCIAL APPLICATION OF DN-3636 CATALYST IN DIESEL HYDROTREATING UNIT

  • Received:2015-09-15 Revised:2015-11-24 Online:2016-05-12 Published:2016-04-25

摘要:

为适应柴油质量升级的要求,中国石化镇海炼化分公司Ⅳ套柴油加氢装置催化剂更换为壳牌标准催化剂公司最新研发的DN-3636催化剂。装置处理量为344t/h,其中直馏柴油、催化裂化柴油、焦化柴油比例分别为68.9%,12.9%,18.2%。标定结果表明:在反应器入口温度331.3 ℃、出口温度373.2 ℃、平均床层温度358.2 ℃、氢油体积比298、体积空速1.74 h-1、反应器入口压力6.06 MPa的条件下,精制柴油产品的硫质量分数为27.0 μg/g,满足国Ⅳ排放标准要求;在反应器入口温度提高至340.4 ℃、出口温度380.1 ℃、反应器床层平均温度367.1 ℃、氢油体积比292、体积空速1.74 h-1的条件下,精制柴油产品的硫质量分数小于10 μg/g,满足国Ⅴ排放标准要求;与上周期催化剂相比,在原料性质更为劣质的情况下,DN-3636催化剂上的平均反应温度大幅降低,且装置能耗降低,在脱硫、脱氮以及芳烃饱和等方面均表现出优异的加氢活性。装置长周期运行数据表明,DN-3636催化剂具有良好的活性和稳定性,可用于生产满足国V排放标准要求的柴油。

关键词: 柴油加氢, DN-3636催化剂, 国Ⅳ排放标准, 国Ⅴ排放标准, 工业应用

Abstract:

To meet the requirements of road-diesel national IV/V specifications in China, SINOPEC Zhenhai Refining and Chemical Company DHT-4 changed out catalyst with Criterion’s latest ULSD CENTERA DN-3636 in 2014. Catalyst performance test run was done with total feed rate of 344 tons/hr, in which SRGO, LCO and CLGO account for 68.9%, 12.9% and 18.2% separately. Product diesel S can be reduced to averaged 27 μg/g at conditions of CHPS pressure 5.3MPa, LHSV 1.74 h-1, H/O ratio 300 and R inlet T 331-332 ℃, WABT 358-359 ℃. When temperature was raised to R inlet 340.4 ℃, WABT 367.1 ℃, product diesel sulfur was less than 10 μg/g, which can meet diesel national V specifications. Performance test run showed that DN-3636 has high activities in HDS, HDN and HDAr for ULSD production. Compared to last cycle’s catalyst, SOR WABT needed for DN-3636 can be lowered down dramatically even with processing worse feed. Due to process more cracked diesel, reactor total delta T went up greatly by using DN-3636, which led to obvious energy consumption reduction.

Key words: diesel hydrogenation, DN-3636 catalyst, national Ⅳ emission standard, national Ⅴ emission standard, commercial application