New Gas-Phase Catalytic Oxidative Processes for Desulfurization of Diesel Fuel
DOI:
https://doi.org/10.18321/ectj202Abstract
An effective gas-phase oxidative desulfurization (ODS) process was proposed. The process was studied in a laboratory reactor with a proprietary catalyst at 300-400 ºС and ambient pressure with model fuels represented by thiophene, dibenzothiophene(DBT) and 4,6-dimethyldibenzothiophene (DMDBT) dissolved in octane, isooctane or toluene. The reactivity of different sulfur containing molecules in ODS was shown to increase in the sequence: thiophene<DBT<DMDBT. The main sulfur containing product of oxidation of these compounds was SO2. During the gas-phase ODS both processes of sulfur species oxidation and processes of their adsorption were observed and studied. Based on the conducted studies, different ODS process designs comprising its integration with adsorption and regeneration processes and with conventional hydrodesulfurization (HDS) process were proposed. One scheme is based on alternating regimes of ODS and catalyst regeneration in two reactors: sulfur is removed from organic feedstock by oxidation and adsorption in one reactor while simultaneous regeneration of the catalyst that has accumulated sulfur compounds takes place in another reactor. Two other schemes are based on joint use of ODS and HDS. The conventional HDS process is most effective for removal of low-boiling sulfur containing compounds reactive with respect to hydrogen, while removal of refractory sulfur compounds, such as DMDBT is more easily achieved by gas phase ODS. Thus the combination of these processes is expected to be most efficient for deep desulfurization of diesel fuel.
References
[2]. J.F. Ford, T.A. Rayne, D.G. Adlington, US Patent 3341448 (1967).
[3]. L. Gao, Y. Tang, Q. Xue, Y. Liu, Y. Lu, Energy & Fuels 23 (2009) 624–630.
[4]. Y. Lu, Y. Wang, L. Gao, J. Chen, J. Mao, Q. Xue, Y. Liu, H. Wu, G. Gao, M. He, ChemSusChem 1 (2008) 302–306.
[5]. Z. Ismagilov, S. Yashnik, M. Kerzhentsev, V. Parmon, A. Bourane, F.M. Al-Shahrani, A.A. Hajji, O.R. Koseoglu, Cat. Rev. - Sci. Eng. 53 (2011) 199–255.
[6]. A. Bourane, O.R. Koseoglu, Z. Ismagilov, S. Yashnik, M. Kerzhentsev, V. Parmon, US Patent Application 2013/0026072 (2013).
[7]. S. Otsuki, T. Nonaka, N. Takashima, W. Qian, A. Ishihara, T. Imai, T. Kabe, Energy & Fuels 14 (2000) 1232–1239.
[8]. J.T. Sampanthar, H. Xiao, J. Dou, T.Y. Nah, X. Rong, W.P. Kwan, Appl. Catal., B Environ. 63 (2006) 85–93.
[9]. NIST Chemistry Webbook http://webbook.nist. gov/cgi/cbook.cgi?Name=dibenzothiophene+-sulfone++&Units=SI.
[10]. A. Bourane, O.R. Koseoglu, Z. Ismagilov, S. Yashnik, M. Kerzhentsev, V. Parmon, US Patent US 2013028822 (2013).
[11]. A. Bourane, O.R. Koseoglu, Z. Ismagilov, S. Yashnik, M. Kerzhentsev, V. Parmon, US Patent US20130199968 (2013).
[12]. A. Bourane, O.R. Koseoglu, Z. Ismagilov, S. Yashnik, M. Kerzhentsev, V. Parmon, US Patent Application US2013/0197074 (2014).
Downloads
Published
How to Cite
Issue
Section
License
You are free to: Share — copy and redistribute the material in any medium or format. Adapt — remix, transform, and build upon the material for any purpose, even commercially.
Eurasian Chemico-Technological Journal applies a Creative Commons Attribution 4.0 International License to articles and other works we publish.
Subject to the acceptance of the Article for publication in the Eurasian Chemico-Technological Journal, the Author(s) agrees to grant Eurasian Chemico-Technological Journal permission to publish the unpublished and original Article and all associated supplemental material under the Creative Commons Attribution 4.0 International license (CC BY 4.0).
Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.