TY - JOUR
T1 - Effects of Blending and Heat-Treating on Composition and Distribution of SARA Fractions of Atmospheric Residues
AU - Cui, Qingyan
AU - Nakabayashi, Koji
AU - Ma, Xiaoliang
AU - Miyawaki, Jin
AU - Al-Mutairi, Adel
AU - Marafi, Abdulazim Mj
AU - Park, Joo Il
AU - Yoon, Seong Ho
AU - Mochida, Isao
N1 - Funding Information:
The authors acknowledge the Japan Cooperation Center Petroleum (JCCP), the Kuwait Oil Co. (KOC), and the Kuwait Institute for Scientific Research (KISR) for supporting on this joint project. Acknowledgment is also extended to the Kuwait National Petroleum Co. (KNPC) for the in-kind contribution and technical support.
Publisher Copyright:
© 2017 American Chemical Society.
PY - 2017/7/20
Y1 - 2017/7/20
N2 - The effects of blending and heat-treating of two atmospheric residues (ARs) from Lower Fars crude and Kuwait export crude on the distribution and composition of their saturate, aromatic, resin, and asphaltene (SARA) fractions were studied using X-ray diffraction (XRD), high-temperature gas chromatography equipped with an atomic emission detector (HT-GC-AED), gel permeation chromatography with detection by ultraviolet absorbance (GPC-UV), and inductively coupled plasma mass spectrometry (GPC-ICP-MS). Although no obvious change in the mass distribution of the SARA fractions is observed, the result from the GPC-ICP-MS analysis shows that blending of the two ARs at room temperature causes the shift of the metal complexes from the asphaltenes to the resins. Heat-treating of the ARs at 330 °C for 3 h under an H2 pressure of 9 MPa changes the mass distribution of the SARA fractions and promotes the shifts of V and Ni complexes in the asphaltenes from the heavy molecular weight to the light molecular weight and further from the asphaltenes to the resins. The results suggest some potential approaches for improving the hydrodemetallization reactivity of AR by releasing the metals complexes from the asphaltenes.
AB - The effects of blending and heat-treating of two atmospheric residues (ARs) from Lower Fars crude and Kuwait export crude on the distribution and composition of their saturate, aromatic, resin, and asphaltene (SARA) fractions were studied using X-ray diffraction (XRD), high-temperature gas chromatography equipped with an atomic emission detector (HT-GC-AED), gel permeation chromatography with detection by ultraviolet absorbance (GPC-UV), and inductively coupled plasma mass spectrometry (GPC-ICP-MS). Although no obvious change in the mass distribution of the SARA fractions is observed, the result from the GPC-ICP-MS analysis shows that blending of the two ARs at room temperature causes the shift of the metal complexes from the asphaltenes to the resins. Heat-treating of the ARs at 330 °C for 3 h under an H2 pressure of 9 MPa changes the mass distribution of the SARA fractions and promotes the shifts of V and Ni complexes in the asphaltenes from the heavy molecular weight to the light molecular weight and further from the asphaltenes to the resins. The results suggest some potential approaches for improving the hydrodemetallization reactivity of AR by releasing the metals complexes from the asphaltenes.
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U2 - 10.1021/acs.energyfuels.6b03275
DO - 10.1021/acs.energyfuels.6b03275
M3 - Article
AN - SCOPUS:85025588845
SN - 0887-0624
VL - 31
SP - 6637
EP - 6648
JO - Energy and Fuels
JF - Energy and Fuels
IS - 7
ER -