RS-2000催化剂在中国石化镇海炼化分公司柴油加氢装置的工业应用

INDUSTRIAL APPLICATION OF DIESEL HYDRODESULFURIZATION CATALYST RS-2000

为配合柴油产品质量整体升级的需要,中国石化镇海炼化分公司Ⅳ套柴油加氢装置采用中国石化石油化工科学研究院最新研发的RS-2000超深度加氢脱硫催化剂进行生产。装置满负荷(357t/h)标定结果表明,对焦化柴油比例为15.5%的混合原料(平均硫质量分数为0.974%～0.999%),在冷高压分离器压力5.3MPa、体积空速2.0h-1、反应器入口温度352～354℃、床层平均温度371～373℃、反应器入口气油体积比约为310的条件下,精制柴油产品的硫质量分数小于20gμ/g,各项性质达到国Ⅳ排放标准对柴油的质量要求。标定期间的平均脱硫率为99.7%,平均脱氮率为98.0%,说明RS-2000催化剂具有较高的脱硫、脱氮活性。同时,柴油产品的十六烷值和多环芳烃含量等性质也得到一定程度的改善。

In order to upgrade the diesel product quality, a high performance hydrodesulfurization catalyst RS-2000 developed by RIPP, has been used in No. 4 diesel hydrotreating unit in Zhenhai Refining ＆ Chemical Company, Sinopec. Industrial application results show that using a feedstock blended with 15.5 % CGO, under the process conditions of 5.3MPa in cold high pressure separator, liquid hour space velocity of 2.0 h-1, inlet temperature of the reactor of 352—354 ℃, average bed temperature of 371—373 ℃, and gas to oil volume ratio at the reactor entrance of about 310, RS-2000 catalyst exhibited excellent capability of hydrodesulfurization and hydrodenitrogenation. The sulfur content of diesel product is reduced to lower than 20 μg/g, and the quality of diesel product meets the national diesel standard of grade IV. The sulfur removal rate reaches to 99.7 %, and the nitrogen removal rate is up to 98.0 %. Furthermore, the properties of diesel product have certain improvement, such as cetane number and the content of poly-aromatic hydrocarbons.