文献类型：期刊文献

英文题名：Effects of Supercritical Water in Vacuum Residue Upgrading

作者：Cheng, Zhen-Min[1];Ding, Yong[1];Zhao, Li-Qun[1];Yuan, Pei-Qing[1];Yuan, Wei-Kang[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2009

卷号：23

期号：5-6

起止页码：3178

外文期刊名：ENERGY & FUELS

收录：;EI(收录号：20093212237081);WOS:【SCI-EXPANDED(收录号:WOS:000267416600113)】；

基金：This work was carried out under support from the Shanghai Scientific and Technical Committee on Fundamental Research Projects (03JC14024 and 07DJ14002) and partial support from the Natural Science Foundation of China (20876043).

语种：英文

外文关键词：Oxygen - Spectrum analysis - Coke - Cracks - Distillation

摘要：Vacuum residue (VR) upgrading was conducted in the environment of supercritical water (SCW) without oxygen addition in an attempt to yield a maximum of light oil. Simulated distillation of the liquid products from a set of orthogonal experiments shows that temperature should not be too high to restrict coke formation, and the most beneficial condition is found at (1) 420 degrees C for the temperature, (2) 0.15 g/cm(3) for the water density, (3) 2 g/g for the H2O/oil ratio, and (4) 1 h for the reaction time. A simultaneous increase of the water density and H2O/oil would significantly improve the cracking behavior and the yield in light oil. Scattered coke particles between 10 and 100 mu m were generated from VR cracking, which suggests the dispersion effect of SCW. The infrared spectrum analysis has indicated an increase in the H/C atomic ratio in the liquid product, which implies that hydrogen is generated from the condensation reactions rather than from water because no oxygen-containing group was detected.