scholarly journals Upgrading and desulfurization of heavy oils by supercritical water

2015 ◽  
Vol 96 ◽  
pp. 114-123 ◽  
Author(s):  
Michael T. Timko ◽  
Ahmed F. Ghoniem ◽  
William H. Green
Keyword(s):  
Supercritical Water ◽  
Heavy Oils

Demetallization of Heavy Oils of High Metal Content through Pyrolysis under Supercritical Water Environment

2020 ◽  
Vol 34 (3) ◽  
pp. 2861-2869 ◽  
Author(s):  
Xu-Quan Tang ◽  
Jing-Cao Pu ◽  
Hong-Bing Zheng ◽  
Xu-De Yu ◽  
Xue-Feng Chen ◽  
...  
Keyword(s):  
Supercritical Water ◽  
Metal Content ◽  
Water Environment ◽  
Heavy Oils ◽  
High Metal Content ◽  
High Metal

scholarly journals Removal of Nickel and Vanadium from Heavy Oils Using Supercritical Water

2014 ◽  
Vol 57 (1) ◽  
pp. 18-28 ◽  
Author(s):  
Pradip Chandra Mandal ◽  
Motonobu Goto ◽  
Mitsuru Sasaki
Keyword(s):  
Supercritical Water ◽  
Heavy Oils

scholarly journals Chemicals from heavy oils by ZSM ‐5 catalysis in supercritical water: Model compound and reaction engineering

AIChE Journal ◽  
2020 ◽  
Vol 66 (7) ◽  
Author(s):  
Azadeh Zaker ◽  
Patricia Guerra ◽  
Geoffrey A. Tompsett ◽  
Xinlei Huang ◽  
Jesse Q. Bond ◽  
...  
Keyword(s):  
Supercritical Water ◽  
Model Compound ◽  
Reaction Engineering ◽  
Water Model ◽  
Heavy Oils

scholarly journals Conditions of Supercritical Water for Good Miscibility with Heavy Oils

2010 ◽  
Vol 53 (1) ◽  
pp. 61-62 ◽  
Author(s):  
Masato Morimoto ◽  
Shinya Sato ◽  
Toshimasa Takanohashi
Keyword(s):  
Supercritical Water ◽  
Heavy Oils

Upgrading blends of microalgae feedstocks and heavy oils in supercritical water

2018 ◽  
Vol 133 ◽  
pp. 674-682 ◽  
Author(s):  
Ramazan Oguz Caniaz ◽  
Salim Simsek ◽  
Serhat Arca ◽  
Ehsan Sarayloo ◽  
Ibrahim Halil Kavakli ◽  
...  
Keyword(s):  
Supercritical Water ◽  
Heavy Oils

Microscopic versus process parameters in heavy-oil upgrading

1992 ◽  
Vol 50 (1) ◽  
pp. 366-367
Author(s):  
V.A. Munoz ◽  
R.J. Mikula ◽  
C. Payette ◽  
W.W. Lam
Keyword(s):  
Molecular Weight ◽  
Liquid Fuels ◽  
Chemical Components ◽  
Heavy Oils ◽  
Synthetic Fuels ◽  
High Hydrogen ◽  
Optical Texture ◽  
Polar Groups ◽  
Anisotropic Character ◽  
Planar Molecules

The transformation of high molecular weight components present in heavy oils into useable liquid fuels requires their decomposition by means of a variety of processes. The low molecular weight species produced recombine under controlled conditions to generate synthetic fuels. However, an important fraction undergo further recombination into higher molecular weight components, leading to the formation of coke. The optical texture of the coke can be related to its originating components. Those with high sulfur and oxygen content tend to produce cokes with small optical texture or fine mosaic, whereas compounds with relatively high hydrogen content are likely to produce large optical texture or domains. In addition, the structure of the parent chemical components, planar or nonplanar, determines the isotropic or anisotropic character of the coke. Planar molecules have a tendency to align in an approximately parallel arrangement to initiate the formation of the nematic mesophase leading to the formation of anisotropic coke. Nonplanar highly alkylated compounds and/or those rich in polar groups form isotropic coke. The aliphatic branches produce steric hindrance to alignment, whereas the polar groups participate in cross-linking reactions.

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