Journal
FUEL PROCESSING TECHNOLOGY
Volume 104, Issue -, Pages 174-180Publisher
ELSEVIER
DOI: 10.1016/j.fuproc.2012.05.010
Keywords
Aromatic sulfonic copper; Upgrading; Visbreaking; Super-heavy oil; Pyrolysis; Catalytic aquathermolysis
Funding
- People's Republic of China National Natural Science Foundation [51174179]
- Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education (China University of Geosciences)
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As one of the important in-situ upgrading technologies, catalytic aquathermolysis has attracted worldwide interest for heavy oil exploitation recently. Aiming to upgrade and visbreak a kind of super-heavy oil, we have synthesized a new type of catalyst - aromatic sulfonic copper to process it. The experimental results show that, using 0.2 wt.% catalyst and 25.0 wt.% water at 280 degrees C for 24 h, the viscosity of oil sample could be decreased by 95.5%, with 13.72% in the conversion of heavy content to light content. Furthermore, the structure and group compositions of heavy oil were characterized by FT-IR, GPC, EL, H-1 NMR and GC-MS. It is found that the catalyst could improve the pyrolysis of heavy oil, and remove some heteroatoms (S, O and N) in its molecules, which finally led to the upgrading and visbreaking of the oil. Additionally, in view of the low-cost for synthesis and simple preparation of this technique, it is likely to have some good application prospects. (C) 2012 Elsevier B.V. All rights reserved.
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