کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6504566 | 1419151 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characteristics of slurry-phase hydrocracking for vacuum residue with reaction temperature and concentrations of MoS2 dispersed catalysts
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This study investigated the characteristics of slurry-phase hydrocracking of vacuum residue (VR > 524 °C) at a high conversion (40-95 wt.%) with a change of reaction temperatures and concentrations of the dispersed molybdenum (Mo Conc. 100-2000 wt.ppm) catalyst. Experiments were carried out with an initial hydrogen pressure of 80 bar (at 80 °C) at a reaction temperature from 385 to 440 °C for four hours in a batch reactor. As results, it was found that the sediment formation is mainly dependent on the VR conversion by the reaction temperature and started over 70 wt.% of VR conversion. Up to 70-80 wt.% of VR conversion, the higher catalysts showed the higher asphaltene conversion and prevented the sediment formation at the boundary of its formation, but it didn't show any effect over 80 wt.% of VR conversion anymore. Based on the analysis of the structural change and ξ-potential of asphaltene from the liquid and sediment, and SARA compositional change in the liquid, the reason for sediment formation was explained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 305, 1 May 2018, Pages 92-101
Journal: Catalysis Today - Volume 305, 1 May 2018, Pages 92-101
نویسندگان
Kang Seok Go, Suk Hyun Lim, Yong Ku Kim, Eun Hee Kwon, Nam Sun Nho,