Citation: WANG Qi, WANG Zong-xian, MU Bao-quan, GUO Ai-jun, GUO Kai-li. Hydrogen donor visbreaking of Venezuelan atmospheric residue[J]. Journal of Fuel Chemistry and Technology, ;2012, 40(10): 1200-1205. shu

Hydrogen donor visbreaking of Venezuelan atmospheric residue

WANG Qi ¹ ,
WANG Zong-xian ^1,, ,
MU Bao-quan ¹ ,
GUO Ai-jun ¹ ,
GUO Kai-li ^1,2

1.
1. State Key Laboratory of Heavy oil Processing, College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266555, China;

Corresponding author: WANG Zong-xian,
Received Date: 22 February 2012
Available Online: 11 May 2012
Fund Project: 中国石油天然气股份有限公司委内瑞拉超重油减黏基础研究(供氢热裂化)项目(W2008E-1502/2) (供氢热裂化)项目(W2008E-1502/2) 中央高校基本科研业务费专项资金资助(12CX06041A)。 (12CX06041A)

Visbreaking and hydrogen donor visbreaking of Venezuelan atmospheric residue were evaluated in an autoclave. The results show that hydrogen donor employ in visbreaking process is able to inhibit gas production, coke formation and asphaltene formation of residua in the thermal conversion process. To be specific, gas and coke yield in hydrogen donor visbreaking are less than that in visbreaking by 0.5%~1.2% and 0.02%~0.98% respectively, and asphaltene content of its residual oils is less than that of visbreaking by 0.6%~1.3%. With the reaction time increasing from 5 to 20 min at 425℃, the total and net viscosity reduction rate of hydrogen donor visbreaking process varies in 46.1%~54.8% and 10.2%~33.0%, respectively. The optimum reaction condition for hydrogen donor visbreaking process is obtained at 425℃ for 5 min. Under this condition, the properties of hydrogen donor visbroken oil are as follows: the spot test rates NO. 1 according to reference spot description in ASTM D4740, the kinematic viscosity measured at 50℃ is 185.5 mm²/s and the net viscosity reduction rate is 26.4%, which meet the basic requirements of transportation.
- atmospheric residue,
- ultra-heavy oil,
- hydrogen donor,
- thermal conversion,
- stability,
- viscosity reduction rate
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