Citation: LIU He, WANG Zong-xian, ZHAO Xiang-kun, LI Yu-xing, CHEN Kun, GUO Ai-jun. Partial upgrading of vacuum residue from Canadian oil sand bitumen under CO/H₂-H₂O[J]. Journal of Fuel Chemistry and Technology, ;2018, 46(1): 45-53. shu

Partial upgrading of vacuum residue from Canadian oil sand bitumen under CO/H₂-H₂O

1.
State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum(East China), Qingdao 266580, China
2.
College of Pipeline and Civil Engineering, China University of Petroleum(East China), Qingdao 266580, China

Corresponding author: WANG Zong-xian, zxwang@upc.edu.cn
Received Date: 27 September 2017
Revised Date: 1 December 2017

Fund Project: Provincial Natural Science Foundation of Shandong ZR2017BB021China National Petroleum Corporation CNPC, PRIKY16066The project was supported by National Natural Science Foundation of China (21776313), the China Postdoctoral Science Foundation (2016M602219), Provincial Natural Science Foundation of Shandong (ZR2017BB021), Qingdao Postdoctoral Applied Research Project (2016224), State Key Laboratory of Heavy Oil Processing (SLKZZ-2017003, SLKZZ-2017011), Key Research and Development Plan of Shandong Province (2017GGX70108), Fundamental Research Funds for the Central Universities (Special Projects, 17CX05016), PetroChina Innovation Foundation (2017D-5007-0506), China National Petroleum Corporation (CNPC, PRIKY16066) and Shandong Postdoctoral Funded Project (201702028)State Key Laboratory of Heavy Oil Processing SLKZZ-2017003Shandong Postdoctoral Funded Project 201702028the China Postdoctoral Science Foundation 2016M602219National Natural Science Foundation of China 21776313Qingdao Postdoctoral Applied Research Project 2016224PetroChina Innovation Foundation 2017D-5007-0506State Key Laboratory of Heavy Oil Processing SLKZZ-2017011Fundamental Research Funds for the Central Universities Special Projects, 17CX05016Key Research and Development Plan of Shandong Province 2017GGX70108

Figures(6)

The upgrading of the vacuum residue from Canadian oil sand bitumen was performed in a batch reactor with the syngas (CO/H₂) and H₂O. The effect of CO/H₂-H₂O for residue upgrading was verified. In the presence of CO/H₂-H₂O, the coke induction period is postponed by 3.5-6.5 min. When the coke yield is about 0.1%, the viscosity reduction efficiency can be raised by 29.1% at 410℃ and even 54.6% at 420℃. The upgrading experiments were also carried out in the presence of N₂-H₂O, CO-H₂O, and H₂-H₂O, respectively. The results show that the capability to inhibit the coke formation was in the order of H₂-H₂O > CO/H₂-H₂O > CO-H₂O > N₂-H₂O. The impetus of CO/H₂-H₂O to BVR upgrading could be attributed to the active hydrogen mainly from H₂, nascent hydrogen by water-gas shift reaction as well as aqua-thermolysis. The thermal conditions such as the pressure of syngas, water content and reaction temperature could influence the coking propensity of BVR under CO/H₂-H₂O by affecting the three different attributions. These results indicate that the more accessible and low-cost syngas could provide the necessary hydrogen for BVR upgrading. Water presents a synergism with syngas for further promoting the BVR upgrading process.
- oil sand bitumen,
- syngas,
- aqua-thermolysis,
- active hydrogen,
- thermal upgrading
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Partial upgrading of vacuum residue from Canadian oil sand bitumen under CO/H₂-H₂O