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| Colloidal stability of atmospheric residue hydrotreating production |
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YU Shuang lin, SHAN Hong hong, ZHANG Long li, SUN Yu dong, YANG Chao he
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(State Key Laboratory of Heavy Oil Processing in China University of Petroleum,Qingdao 266555, China)
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| Abstract: |
| Suizhong36 1 atmospheric residue was hydrotreated in an autoclave using hydrotreating catalyst at different reaction temperature. The SARA composition, the mean relative molecular mass and the average structure parameters and solubility parameter of asphaltene were analyzed to investigate the colloidal stability. The results show that the colloidal stability reduces with the reaction temperature increasing. The contents of asphaltene and saturate increase, aromatic and resin contents decrease. The mean relative molecular mass of SARA composition decreases, especially resin. The fraction of aromatic carbon increases, the fraction of cycloparaffinic carbon and paraffinic carbon and condensed parameter decrease. Solubility parameter and the force of inter molecular increase. The variations of SARA composition, the mean relative molecular mass and asphaltene average structure lead to the change of colloidal stability. |
| Key words: atmospheric residue asphaltene colloidal stability chemical structure solubility parameter |
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