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Visbreaking of heavy petroleum oil catalyzed
by SO/ZrO solid super-acid doped with Ni or Sn |
| JING Ping1, LI Qingbiao1, HAN Mei1, SUN Daohua1, JIA Lishan1, FANG Weiping2 |
| 1.Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Key Lab for Chemical Biology of Fujian Province, Xiamen University; 2.Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University; |
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Abstract SO42-/ZrO2 solid super-acid catalysts (SZ) doped with Ni2+ or Sn2+ (Ni2+/SZ, Sn2+/SZ) were prepared for catalytic visbreaking of heavy petroleum oil from Shengli oil field. The visbreaking reactions were carried out at 240°C and 3–4 MPa for 24 h using a heavy petroleum oil to catalyst mass ratio of 100 : 0.05. The effect of water content on viscosity of heavy petroleum oil was also investigated. Both catalysts can promote thermolysis of heavy petroleum oil and the viscosity was reduced from 0.319 Pa·s to 0.135 Pa·s for Ni2+/SZ and 0.163 Pa·s for (Sn2+/SZ) with visbreaking rates of 57.7% and 48.9%, respectively. After visbreaking, the saturated hydrocarbon content increased while aromatics, resin, asphaltene, sulfur and nitrogen content decreased. The presence of water was disadvantageous to visbreaking of heavy petroleum oil.
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Issue Date: 05 June 2008
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