满足国V汽油标准的RSDS-Ⅲ技术的开发及应用

开发了生产国V汽油的催化裂化汽油选择性加氢脱硫(RSDS-Ⅲ)技术。该技术包括催化剂选择性调控(RSAT)技术以及配套的RSDS-Ⅲ新催化剂。中型试验结果表明,RSDS-Ⅲ技术对多种原料油具有较好的适应性。对于硫含量较高的原料A和原料B,采用RSDS-Ⅲ技术,可将硫质量分数分别从600μg/g、631μg/g降低到7μg/g、9μg/g时,产品RON损失0.9、1.0个单位,抗爆指数损失0.4、0.6个单位。工业应用结果显示,以青岛石化MIP汽油为原料(硫质量分数为845μg/g),在全馏分汽油产品硫质量分数8μg/g时,产品RON损失1.5个单位;以长岭FCC汽油为原料(硫质量分数304μg/g、烯烃体积分数34.8%),在全馏分汽油产品硫质量分数不大于10μg/g、满足国V汽油排放标准的条件下,RON损失1.5个单位。采用RSDS-Ⅲ技术生产国V汽油时,产品辛烷值损失小。

Development and Application of RSDS-III Technology for National V Gasoline Production

FCC naphtha selective hydrodesulfurization (RSDS-Ⅲ) technology was successfully developed for production of National V gasoline. RSDS-Ⅲ technology includes catalyst selective adjusting (RSAT) technology and proprietary catalyst. Pilot plant result showed that RSDS-Ⅲ technology was desirable in adaptability to different feedstocks. By using RSDS-Ⅲ technology to process the feed with sulfur mass fractions of 600 μg/g and 631 μg/g, the products with sulfur mass fractions of 7 μg/g and 9 μg/g and the RON losses of 0.9 and 1.0 could be obtained, respectively. Commercial application results showed that by using RSDS-Ⅲ technology to process Qingdao branch MIP gasoline (sulfur mass fraction of 845 μg/g), the sulfur mass fraction and the RON loss of the product were 8 μg/g and 1.5, respectively, and to process Changling Branch gasoline(sulfur mass fraction of 304 μg/g, olefin volume fraction of 34.8%), the sulfur mass fraction and the RON loss of the product were 10 μg/g and 1.5, respectively. Due to high HDS activity and good HDS selectivity, the RSDS-Ⅲ technology can be used to produce ultra low sulfur gasoline with the small RON loss, meeting the standard of National V.