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首页> 外文期刊>Topics in Catalysis >Investigation of hydrodearomatization of prehydrogenated gas oil fractions on Pt–Pd/H-USY catalysts
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Investigation of hydrodearomatization of prehydrogenated gas oil fractions on Pt–Pd/H-USY catalysts

机译：在Pt–Pd / H-USY催化剂上对预氢化粗柴油馏分进行加氢脱芳香化的研究

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摘要

Hydrodearomatization (HDA), hydrodenitrogenation (HDN) and hydrodesulphurization (HDS) of real gas oils (various sulphur, nitrogen and total aromatic content) was investigated over Pd, Pt catalysts supported on USY zeolite, whose Pd/Pt mass ratio was varied between 6:1 and 1:3, and total metal contents were between 0.90 and 0.93. The effect of Pd/Pt ratio on HDA, HDN and HDS activities is presented. The advantageous process parameters for HDA, HDN and HDS of gas oils over a selected catalyst (e.g. Pd/Pt mass ratio 3:1) were determined. Additionally, the effect of key process parameters (temperature, pressure, LHSV) on the yield and quality of products was studied. Under optimal process parameters the HDA efficiency decreased with sulphur and nitrogen content of feed. The rate of HDA enhanced with Pt content of the catalyst while HDS and HDN efficiency increased with Pd content. The maximum aromatic saturation was 85% and it decreased with sulphur and nitrogen content of the feed.
机译：在USY沸石上负载的Pd，Pt催化剂上研究了真实瓦斯油（各种硫，氮和总芳烃含量）的加氢脱芳香化（HDA），加氢脱氮（HDN）和加氢脱硫（HDS），其Pd / Pt质量比在6之间变化1：1和1：3，总金属含量在0.90和0.93之间。介绍了Pd / Pt比对HDA，HDN和HDS活性的影响。确定了在所选催化剂上的粗柴油的HDA，HDN和HDS的有利工艺参数（例如Pd / Pt质量比为3：1）。此外，还研究了关键工艺参数（温度，压力，LHSV）对产品产量和质量的影响。在最佳工艺参数下，HDA效率随进料中硫和氮的含量而降低。催化剂的Pt含量提高了HDA的速率，而Pd含量提高了HDS和HDN的效率。最大芳族饱和度为85％，并且随着进料中硫和氮的含量降低。

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