降低催化裂化汽油硫含量的重油裂化催化剂DOS的工业应用试验

COMMERCIAL APPLICATION OF DOS CATALYST FOR REDUCING SULFUR AND OLEFIN CONTENTS OF FCC NAPHTHA

在中国石化九江分公司Ⅰ套催化裂化装置上进行降低催化裂化汽油硫含量和烯烃含量的重油裂化催化剂DOS的工业应用试验。结果表明,与降烯烃催化剂GRV-C相比,采用DOS催化剂后液化气、汽油和总液体收率有所增加,干气、焦炭的产率有所下降;汽油烯烃体积分数降低7.8个百分点,汽油硫分布下降19.4%,汽油硫含量与原料油硫含量的比值下降20.3%。说明催化剂DOS裂化能力强、焦炭选择性好,并具有较好的降低汽油硫含量和烯烃含量的能力。

DOS catalyst was a catalyst developed for reducing sulfur and olefin contents of FCC naphtha. The commercial trial of DOS catalyst was carried out successfully in the FCC unit of SINOPEC Jiujiang Company. The trial results showed that as compared with olefin reducing catalyst GRV-C,DOS catalyst exhibited higher yields of LPG, naphtha and total liquid products, and lower yields of dry gas and coke;the volume percentage of olefin in naphtha reduced 7.8 points; the sulfur distributed in naphtha reduced 19.4% the ratio of sulfur in naphtha to sulfur in feed reduced 20.3%. Thus, DOS catalyst possessed high heavy oil crackability,good coke selectivity and having the function to reduce sulfur and olefin contents in cracked naphtha.