共查询到17条相似文献,搜索用时 421 毫秒
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在分析催化裂化汽油硫和烯烃分布不均匀的基础上,对催化裂化汽油进行分馏,开发出了活性高和稳定性好的重馏分辛烷值改进催化剂和选择性加氢脱硫催化剂及其工艺技术。采用该工艺技术对RFCC汽油进行轻馏分碱洗抽提脱硫醇,重馏分辛烷值改进/选择性加氢脱硫等改质处理,再按分馏比例回调,产品汽油烯烃含量为24.2v%,较原料油降低了16.0v%,芳烃含量为19.2v%,较原料油提高了4.1v%,硫含量为41.5ppm,总脱硫率为85.46%,RON为87.8,较原料油提高0.4个单位,液收99.1%,可生产符合国Ⅳ规范的清洁汽油。 相似文献
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加氢脱硫降烯烃技术在FCC汽油加氢脱硫及烯烃饱和的同时,很好地减少汽油辛烷值损失问题。介绍了采用HDDO-01催化剂与HDDO-02催化剂组合工艺,对催化裂化汽油进行加氢处理,w(硫)〈50μg/g,汽油辛烷值损失〈2。 相似文献
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研究开发出了适于FCC汽油加氢改质的选择性加氢脱硫催化剂和辛烷值恢复催化剂,并在300 mL绝热装置上,分别以全馏分FCC汽油或切割后的重馏分FCC汽油为原料,进行了FCC汽油加氢改质工艺的系统研究,结果表明:单独采用辛烷值恢复工艺或辛烷值恢复-选择性加氢脱硫组合工艺不能完全满足FCC汽油加氢改质的要求;而单独采用选择性加氢脱硫工艺或选择性加氢脱硫-辛烷值恢复组合工艺可以满足全馏分FCC汽油或切割后重馏分FCC汽油加氢改质的要求。将全馏分FCC汽油切割后进行加氢改质可以得到硫含量更低的改质产品或直接生产符合国Ⅳ标准的清洁汽油。 相似文献
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《中国石油和化工标准与质量》2016,(12)
60万吨/年催化汽油加氢装置采用DSO催化汽油选择性加氢脱硫成套技术,全馏分催化裂化汽油在分馏塔内实现轻汽油馏分(LCN)和重汽油馏分(HCN)分离,轻汽油馏分作为产品直接与加氢脱硫后的重汽油进行调和。轻汽油馏分去新建醚化装置后,结合汽油加氢装置实际产生的问题分析对本装置生产与运行产生一定影响。 相似文献
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To solve the contradiction between ultradeep hydrodesulfurization (HDS) and octane recovery in clean gasoline production, this article proposes a novel two‐stage fluid catalytic cracking (FCC) gasoline hydro‐upgrading process with the selective HDS catalyst in the first reactor and the complemental HDS and octane recovery catalyst in the second reactor. The process achieved the relayed removal of sulfur‐containing compounds with different natures, providing itself with excellent HDS performance, and the hydroisomerization and aromatization of olefins in the second stage endowed the process with superior octane recovery ability and high product yield while remarkably reducing the olefin content of FCC gasoline. The process was also featured by low hydrogen consumption due to the low first‐stage olefin saturation and the balanced second‐stage hydrogenation and dehydrogenation. The two‐stage process developed here sheds a light for efficiently producing ultralow sulfur gasoline from the poor‐quality FCC gasoline of high olefin and sulfur contents. © 2012 American Institute of Chemical Engineers AIChE J, 59: 571–581, 2013 相似文献
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FCC gasoline obtained from an Indian refinery was analyzed for its quality improvement through catalytic processes. The analysis indicated the presence of high amount of sulfur, olefin and iso-paraffins in the feed that are not suitable for processing through the hydro treatment or hydro-isomerization. Detailed studies indicated that majority of iso-paraffinic and olefinic compounds in the feed boil below 60 °C. The entire range of gasoline is fractionated into light fraction (IBP-60 °C) and heavy fraction (60 °C-FBP). Heavy hydrocarbon fraction exhibited more aromatics and sulfur with comparatively low olefins and iso-paraffins. HDS followed by hydro-isomerization of the heavier fraction resulted in the formation of C6-C9 iso-paraffins through the saturation of olefins and aromatics. Overall, the processed FCC gasoline exhibited more iso-paraffins with low olefins, low aromatics and sulfur, without any loss in octane number. 相似文献
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催化裂化汽油的二次反应 总被引:4,自引:0,他引:4
从降烯烃、降硫和增产丙烯的现实需要出发,分析了FCC汽油二次反应中的理想和非理想反应.用小型提升管催化裂化实验装置考察了FCC粗汽油在REUSY、ZRP和MO-REY沸石催化剂上二次反应的产品分布和改质汽油组成;探讨了操作强度对二次反应转化率和选择性的影响.结果表明:在Y型或ZRP沸石催化剂作用下,FCC汽油二次反应不仅产生更轻的干气和富含丙烯的液化气,也产生更重的柴油和焦炭.二次反应得到的改质汽油与原料汽油相比,其烯烃含量和硫含量降低,芳烃含量和辛烷值明显提高.二次反应的转化深度和选择性取决于原料汽油的烯烃含量、催化剂沸石类型和操作强度. 相似文献
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针对FCC汽油降烯烃后辛烷值低影响企业高辛烷值汽油调和的问题,室内评价了不同FCC汽油馏分对WK-602型辛烷值改进剂的感受性及与其它调和组分的相互作用。结果表明WK-602可有效提高汽油辛烷值,基础汽油的辛烷值愈低作用效果愈明显,添加量每增加0.5%,RON值可提高0.7~1个单位,与其它高辛烷值组分/添加剂的互溶性好,无消极作用;工业放大应用显示WK-602与高辛烷值组分/添加剂混合分散均匀,调和生产的97#车用汽油指标满足质量标准要求。应用WK-602辛烷值改进剂调和生产93#、97#汽油产品的经济效益良好。 相似文献