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Migration and Transformation of Vanadium and Nickel in High Sulfur Petroleum Coke during Gasification Processes

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  • Wei Li

    (State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China)

  • Ben Wang

    (State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China)

  • Jun Nie

    (State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China)

  • Wu Yang

    (State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China)

  • Linlin Xu

    (Wuhan Huayu Energy-Burning Engineering Technology Co. Ltd., G3, New Energy Building, Future City, No. 999 Gaoxin Avenue, East Lake High-tech Zone, Wuhan 430206, China)

  • Lushi Sun

    (State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China)

Abstract

The volatilization characteristics and occurrence forms of V and Ni in petroleum coke (petcoke) were investigated during steam (H 2 O) and carbon dioxide (CO 2 ) gasification on a fixed bed reactor at 800–1100 °C. The Tessier sequential chemical extraction procedure was employed to determine the different forms of V and Ni. The results showed their volatilities were not dependent on the gasification atmosphere, but rather relied mainly on the reaction temperature. The CO 2 atmosphere accelerated the conversion of organic-bound nickel to residual form at low temperature and promoted Fe-Mn oxides formation at high temperature. However, the H 2 O atmosphere was conducive to form vanadium bound to Fe-Mn oxides and promoted the decomposition of residual forms. In addition, the thermodynamic equilibrium calculations showed the volatilization of Ni mainly released Ni 3 S 2 between 800–1100 °C. The H 2 O atmosphere was favorable to generate the more stable Ni x S y compound, thereby suppressing the volatilization of Ni, while the presence of CO 2 led to an increase in residual V and decrease of Fe-Mn oxides. The V and Ni mainly caused erosion problems under the CO 2 atmosphere while the fouling and slagging obviously increased under the H 2 O atmosphere with impacts gradually weakened with the increase of temperature.

Suggested Citation

  • Wei Li & Ben Wang & Jun Nie & Wu Yang & Linlin Xu & Lushi Sun, 2018. "Migration and Transformation of Vanadium and Nickel in High Sulfur Petroleum Coke during Gasification Processes," Energies, MDPI, vol. 11(8), pages 1-14, August.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:8:p:2158-:d:164363
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    References listed on IDEAS

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    1. Xia Liu & Juntao Wei & Wei Huo & Guangsuo Yu, 2017. "Gasification under CO 2 –Steam Mixture: Kinetic Model Study Based on Shared Active Sites," Energies, MDPI, vol. 10(11), pages 1-10, November.
    2. Abarasi Hart & Joseph Wood, 2018. "In Situ Catalytic Upgrading of Heavy Crude with CAPRI: Influence of Hydrogen on Catalyst Pore Plugging and Deactivation due to Coke," Energies, MDPI, vol. 11(3), pages 1-18, March.
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    Cited by:

    1. Xiongchao Lin & Wenshuai Xi & Jinze Dai & Caihong Wang & Yonggang Wang, 2020. "Prediction of Slag Characteristics Based on Artificial Neural Network for Molten Gasification of Hazardous Wastes," Energies, MDPI, vol. 13(19), pages 1-18, October.

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