预硫化型FF-66/FC-20催化剂组合应用生产国Ⅵ低凝柴油

Combined application of pre-vulcanized type FF-66/FC-20 catalyst to produce low pour point diesel oil meeting China’s nationalⅥstandard

为实现柴油产品质量升级,选择抚顺石油化工研究院研制的新一代加氢精制催化剂FF-66替换原加氢精制催化剂FF-36,与加氢裂化催化剂FC-20组合使用生产国Ⅵ低凝柴油。结果表明,采用FF-66/FC-20组合催化剂处理催化柴油、焦化汽油和直馏柴油组成的混合原料(平均硫含量为2742μg/g),标定工况下的柴油产品硫含量降低至4.5μg/g,氮含量降低至0.35μg/g,多环芳烃质量分数降低至3.3%,十六烷值提高了3.5个单位,凝点降至-24℃。说明FF-66/FC-20催化剂活性匹配良好,具有优异的脱硫、脱氮性能和十六烷值增值能力,能够满足柴油加氢改质异构降凝装置生产国Ⅵ低凝柴油的需求。

In order to upgrade the quality of diesel products,FF-66,a new generation hydrofining catalyst developed by Fushun Research Institute of Petroleum and Petrochemicals,is selected to replace previous FF-36 hydrofining catalyst,and is used jointly with hydrocracking catalyst FC-20 to produce low pour point diesel oil meeting China’s nationalⅥstandard.Results show when the mixing feedstocks composing of catalytic diesel oil,coking gasoline and straight run diesel oil,with an average sulfur content of 2,742μg·g^(-1),is treated by FF-66/FC-20 composite catalyst under calibration conditions,the sulfur content of diesel product drops to 4.5μg·g^(-1),the nitrogen content drops to 0.35μg·g^(-1),polycyclic aromatic hydrocarbon content drops to 3.3%,the cetane number increases by 3.5 units,and the condensation point decreases to-25℃.It is indicated that FF-66/FC-20 catalyst has good activity matching,excellent desulfurization and denitrification performance and cetane value-added ability,over which low pour point diesel meeting China’s nationalⅥstandard can be produced in diesel hydrotreating and upgrading isomerization pour point reduction unit.