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加氢处理
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  hydrotreating
It is a promising support for cracking and hydrotreating catalysts.
      
The mechanism of thiophene hydrodesulfurization over sulfide catalysts for hydrotreating and the effect of the catalyst composition and feed on the number, distribution, and performance of active sites were studied using 35S and 3H isotopes.
      
Based on the results of radioisotopic study, a method for systematic testing-monitoring of sulfide Co(Ni)Mo catalysts for hydrotreating is developed.
      
The hydrotreating activity of the catalysts was proportional to the amount of hydrogen consumed in the range 20-500°C during TPR.
      
Hydrotreating Ni heteropolytungstate catalysts have been prepared by impregnation of γ-Al2O3-alumina with solutions of H3PW12O40 acid and its Ni salt.
      
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Heavy aromatics was separated from reformed gasoline or cracked gasoline by hydrogenation in oil refinery. In this paper,technology of separating trimethylbenzenes from the reformed heavy aromatics and its developing value Were discussed.

重质芳烃自炼油厂重整油或经过加氢处理的裂解汽油分离而得。文章讨论了从重整重质芳烃中分离三甲苯的工艺及开发应用价值。

RD, XPS, acidity measurement with IR-TPD, NO and CO2chemisorption were used to study the surface structure and acidic property of NiW/γ-Al2O3, NiW/γ-Al2O3+USY and the supports of γ-Al2O3and γ-Al2O3+USY. The hydrodesulfurization (HDS) of thiophene andhydrocracking of heptane in oxidic state also have been studied. The results clearly showed that when the support γ-Al2O3 was modified byadding Y zeolite, the number of Bronsted acid sites of the catalyst wasincreased, the cracking activity, as well as the selectivity...

RD, XPS, acidity measurement with IR-TPD, NO and CO2chemisorption were used to study the surface structure and acidic property of NiW/γ-Al2O3, NiW/γ-Al2O3+USY and the supports of γ-Al2O3and γ-Al2O3+USY. The hydrodesulfurization (HDS) of thiophene andhydrocracking of heptane in oxidic state also have been studied. The results clearly showed that when the support γ-Al2O3 was modified byadding Y zeolite, the number of Bronsted acid sites of the catalyst wasincreased, the cracking activity, as well as the selectivity for isomerization was raised. In γ-Al2O3+USY, the USY zeolite scattered over thesurface of γ-Al2O3 and made the free aluminium of γ-Al2O3 decrease.Loaded on the modified support, Ni, W can not only be dispersed overthe surface of γ-Al2O3 but also over the surface of zeolite, and interactedwith the Bronsted acid sites. However, in the modified support, thesurface density of Ni, W decreased and Ni, W preferred to form moreoctahedral coordination. Because NiW/γ-Al2O3+USY catalyst hadmore octahedral coordination of nickel and tungsten than that of NiW/γ-Al2O3, its HDS activity of thiophene was improved.

应用XRD,XPS,IR-TPD,CO2和NO吸附及正庚烷裂解和噻吩加氢脱硫脉冲激反等方法,研究了加氢处理催化剂载体经Y型分子筛改性前后各种性质的变化.结果表明,载体经Y型分子筛改性后,催化剂的B酸、正庆烷裂解活性和异构选择性明显提高.Y型分子筛以分散的形式分布于y-Al2O3表面,减少了载体表面的空位铝.该催化剂中有相当一部分金属组分进入Y型分子筛孔道与其B酸位作用.与NiW/γ-Al2O3相比,这种催化剂的表面金属组分浓度减小,但八面体构型的组分却增加,这有利于提高催化剂的加氢脱硫能力.

In order to expand the source of steam cracking feedstock , a VGO hydrotreating process with single-stage and once-through processing scheme, and a bifunctional catalyst, RT-1, have beendeveloped by Research institute of P6troleum Processing. The preparation and performance of the RT-1catalyst, the studies on hydrotreating process of Daqing VGO, and the steam cracking performance evaluation of the hydrotreated tail oil are presented. The results indicated that the performance of RT-1-1 catalystwas excellents...

In order to expand the source of steam cracking feedstock , a VGO hydrotreating process with single-stage and once-through processing scheme, and a bifunctional catalyst, RT-1, have beendeveloped by Research institute of P6troleum Processing. The preparation and performance of the RT-1catalyst, the studies on hydrotreating process of Daqing VGO, and the steam cracking performance evaluation of the hydrotreated tail oil are presented. The results indicated that the performance of RT-1-1 catalystwas excellents high quality steam cracking feedstock and petroleum products were obtained throughhydrotreating of Daqing VGO at medium pressure ; and the yield of ethylene and light olefins from the hydrotreated VGO feedstock was increased by 3% and 8% respectively in comparison with Daqing naphthafeedstock.

为了扩大乙烯原料来源,石油化工科学研究院开发了VGO加氢处理工艺和一个双功能催化剂(RT-1)。该技术采用单段、一次通过流程。文中阐述了RT-1催化剂的研制和性能,并介绍了大庆常压三线、减压一线混合油(DQVGO)加氢处理工艺研究和加氢尾油(HT-VGO)的蒸汽裂解性能评价。结果表明:RT-1催化剂性能优良;DQVGO在中压下加氢处理可以生产优质乙烯原料(HT-VGO)和石油产品;与大庆石脑油相比,HT-VGO蒸汽裂解的乙烯和三烯产率分别高3%和8%。

 
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