Study on asphaltene aggregate size of ALVR thermal reaction samples under nitrogen atmosphere

ZHANG Long-li; LIU Dong-dong; ZHAO Yu-sheng; YANG Guo-hua; YANG Chao-he; XING Xue-qing

Volume 41 Issue 01

Jan. 2013

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Article Navigation > Journal of Fuel Chemistry and Technology > 2013 > 41(01): 46-52

ZHANG Long-li, LIU Dong-dong, ZHAO Yu-sheng, YANG Guo-hua, YANG Chao-he, XING Xue-qing. Study on asphaltene aggregate size of ALVR thermal reaction samples under nitrogen atmosphere[J]. Journal of Fuel Chemistry and Technology, 2013, 41(01): 46-52.

Citation:

ZHANG Long-li, LIU Dong-dong, ZHAO Yu-sheng, YANG Guo-hua, YANG Chao-he, XING Xue-qing. Study on asphaltene aggregate size of ALVR thermal reaction samples under nitrogen atmosphere[J]. Journal of Fuel Chemistry and Technology, 2013, 41(01): 46-52.

Citation:

ZHANG Long-li, LIU Dong-dong, ZHAO Yu-sheng, YANG Guo-hua, YANG Chao-he, XING Xue-qing. Study on asphaltene aggregate size of ALVR thermal reaction samples under nitrogen atmosphere[J]. Journal of Fuel Chemistry and Technology, 2013, 41(01): 46-52.

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Study on asphaltene aggregate size of ALVR thermal reaction samples under nitrogen atmosphere

1.
State Key Laboratory of Heavy Oil Processing, China University of Petroleum(East China), Qingdao 266580, China;
2.
China Marine Bunker Supply(Rizhao) Co. Ltd., Rizhao 276826, China;
3.
Petrochemical Research Institute, CNPC, Beijing 100195, China;
4.
Synchrotron Radiation Laboratory, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2012-04-19
Rev Recd Date: 2012-06-29
Publish Date: 2013-01-31

Abstract

Abstract

Vacuum residue from Saudi Arabia light crude oil (ALVR) was thermally reacted at 395℃ under the atmosphere of nitrogen. Thermal reaction samples were obtained by online sampling device at different reaction times, and the asphaltene aggregate size was determined by small-angle X-ray scattering (SAXS) measurements. The aggregate size of asphaltene decreases from 29~21 nm in the initial stage of coke induction period; during later stage of coke induction period, the asphaltene aggregate size increases rapidly and reaches to 43 nm when thermal reaction time reaches to 150 min. After the stage of coke induction period, the asphaltene aggregate size changes little and is in the range of 46~42 nm. In the thermal reaction process of residue, the aggregate size of asphaltene is jointly affected by the thermal cracking and association-disassociation of asphaltene, but does not show obvious relationship with asphaltene content.
- vacuum residue,
- thermal reaction,
- coke ratio,
- asphaltene aggregate size

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References(19)

References

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