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

Wei Li, Ben Wang, Jun Nie, Wu Yang, Linlin Xu and Lushi Sun
Additional contact information
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

Energies, 2018, vol. 11, issue 8, 1-14

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.

Keywords: high sulfur petcoke; vanadium; nickel; gasification; sequential extraction; migration (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/11/8/2158/pdf (application/pdf)
https://www.mdpi.com/1996-1073/11/8/2158/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:11:y:2018:i:8:p:2158-:d:164363

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().