Experimental study on pre-hydrogenation of catalytic slurry oil and co-carbonization of middle distillate and high boiling point distillate

WANG Feng; ZHANG Zheng; LI Ze-liang; LI Ke-qi; LIU He; CHEN Kun; GUO Ai-jun

doi:10.1016/S1872-5813(22)60076-8

Volume 51 Issue 6

Jun. 2023

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Article Navigation > Journal of Fuel Chemistry and Technology > 2023 > 51(6): 737-747

WANG Feng, ZHANG Zheng, LI Ze-liang, LI Ke-qi, LIU He, CHEN Kun, GUO Ai-jun. Experimental study on pre-hydrogenation of catalytic slurry oil and co-carbonization of middle distillate and high boiling point distillate[J]. Journal of Fuel Chemistry and Technology, 2023, 51(6): 737-747. doi: 10.1016/S1872-5813(22)60076-8

Citation:

WANG Feng, ZHANG Zheng, LI Ze-liang, LI Ke-qi, LIU He, CHEN Kun, GUO Ai-jun. Experimental study on pre-hydrogenation of catalytic slurry oil and co-carbonization of middle distillate and high boiling point distillate[J]. Journal of Fuel Chemistry and Technology, 2023, 51(6): 737-747. doi: 10.1016/S1872-5813(22)60076-8

Citation:

WANG Feng, ZHANG Zheng, LI Ze-liang, LI Ke-qi, LIU He, CHEN Kun, GUO Ai-jun. Experimental study on pre-hydrogenation of catalytic slurry oil and co-carbonization of middle distillate and high boiling point distillate[J]. Journal of Fuel Chemistry and Technology, 2023, 51(6): 737-747. doi: 10.1016/S1872-5813(22)60076-8

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Experimental study on pre-hydrogenation of catalytic slurry oil and co-carbonization of middle distillate and high boiling point distillate

doi: 10.1016/S1872-5813(22)60076-8

State Key Laboratory of Heavy Oil, College of Chemical Engineering and Chemistry, China University of Petroleum (East China), Qingdao 266580, China

Funds: The project was supported by the National Natural Science Foundation of China (21776313, 21908248, 22278439), the Key Technology Research and Development Program of Shandong (2017GGX70108), the Fundamental Research Funds for the Central Universities (20CX02206A), and the Development Fund of State Key Laboratory of Heavy Oil Processing (25F21040114), and Graduate Innovation Project (22CX04028A).

Received Date: 2022-10-17
Accepted Date: 2022-11-08
Rev Recd Date: 2022-11-05

Available Online: 2022-12-13

Publish Date: 2023-06-15

Abstract

Abstract

A catalytic slurry oil (SO) was treated by moderate pre-hydrotreating, and the structural compositions, the thermal stability, the distillate oil yield, and the coking behavior of SO before and after hydrotreating were analyzed. The carbonization performance as well as the co-carbonization performance of the middle distillate (350−500 ℃) and the high boiling point distillate (500−550 ℃) derived from the hydrogenated SO (HSO) were investigated. The results show that the content of naphthenes and hydrogenated aromatics of HSO increases, while the olefin content decreases, and the olefinic hydrogen content of HSO decreases from 2.71% to 0.97%. Thus, the thermal stability of HSO is fundamentally improved. Additionally, compared with SO, the yields of the middle distillate and the high boiling point distillate of HSO increased by 25.8% and 23.1%, respectively. More importantly, there is no significant coke formation during distillation of HSO. The carbonization experimental results show that the anisotropic textural structure of the coke obtained from the middle distillate derived from HSO is the large flow domain structure, and the coke has the lowest coefficient of thermal expansion (CTE) value of 2.25 × 10⁻⁶ ℃⁻¹. The carbonization performance of the high boiling point distillate derived from HSO is poor, while the co-carbonization with the middle distillate significantly improves the carbonization performance of the high boiling point distillate. The anisotropic textural structure of the coke derived from carbonization of combined fraction is the large flow domain structure and the CTE value is less than 2.30 × 10⁻⁶ ℃⁻¹, when the mass ratio of aromatic fraction to middle fraction is not higher than 2∶1.
- moderate pre-hydrotreating,
- catalytic slurry oil,
- middle distillate,
- high boiling point distillate,
- co-carbonization

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References(27)

References

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