Extractive Desulfurization of Gas Oils: A Perspective Review for Use in Petroleum Refineries

Kumar, Sunil; Srivastava, Vimal Chandra; Nanoti, S. M.

doi:10.1080/15422119.2017.1288633

Cited by 54 publications

(25 citation statements)

References 117 publications

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“…When the electron density on the sulfur atom was higher, the rate constant of oxidation was higher. Thus, the apparent rate constants decreased in the order DBT > BT [ 4 ]. De Fillipis and Scarsella [ 19 ], using the same oxidative system, confirmed and extended the above literature data, pointing out the more complex oxidation path of thiols and sulfides, as highlighted by kinetic evidence, when compared with heterocyclic sulfur compounds such as benzo- and dibenzothiophene.…”

Section: Resultsmentioning

confidence: 99%

“…Benzothiophenes and dibenzothiophenes are highly resistant to hydrogenation, demanding more severe desulfurization conditions, due to their steric hindrance [ 1 ]. New alternative methods [ 2 , 3 ] have been developed, in order to remove the refractory sulfur-containing compounds efficiently from the petroleum fractions, such as selective extraction [ 4 ], adsorption [ 5 ], oxidation [ 6 ], and biodesulfurization [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

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Assessment of the Oxidative Desulfurization of Middle Distillate Surrogate Fuels with Spectroscopic Techniques

Syntyhaki

Detsi

Karonis

2020

Journal of Analytical Methods in Chemistry

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The oxidative desulfurization of five (5) model sulfur compounds and eleven (11) surrogate blends was investigated using the hydrogen peroxide (H2O2)-acetic acid (CH3COOH) system. Consequently, extractive desulfurization was carried out using conventional solvents. The model sulfur compounds, as well as the solvent, are present in petroleum middle distillates. The selection of the compounds was made so that they represent various kinds of sulfur compounds. The goal of this study was the implementation of a simple and economical oxidative and extractive system for the desulfurization of surrogate mixtures with an intermediate sulfur concentration 1% w/w, at the mild temperature of 70°C, and without the use of supplementary and assisting methods such as heterogeneous catalysis or ultrasound irradiation. The sulfur content was estimated using X-ray fluorescence. The progress of the oxidation reaction was monitored using liquid FT-IR. The solid sediments of the oxidation procedure were identified with solid-state FT-IR and 1H NMR spectroscopy.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assessment of the Oxidative Desulfurization of Middle Distillate Surrogate Fuels with Spectroscopic Techniques

Syntyhaki

Detsi

Karonis

2020

Journal of Analytical Methods in Chemistry

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“…Sulfur could be the most abundant heteroatoms in crude oil with the content ranging from 0.5 wt% to 6 wt%, leading to a series of problems such as sulfur oxide (SO x ) emission and acid rain 1,4,5 . With the increasing awareness of environmental protection, a desulfurization process to remove sulfur heteroatoms for downstream utilization becomes a must for clean energy utilization and corresponding legislations came into effect consecutively 6 . For example, the maximum sulfur content tolerance of 15 ppm was applied to on-road vehicles, non-road vehicles and locomotives in North America in 2006,2010 and 2012, respectively, and more strict limitation of 10 ppm in gasoline came into effect in 2017 7 .…”

Section: Main Textmentioning

confidence: 99%

Methane-Assisted Catalytic Desulfurization in an Environmentally Benign Way

Song¹,

Xu²,

He³

et al. 2021

Preprint

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Petroleum is one of the most important natural resources for human beings, while the contained sulfur heteroatoms lead to a series of problems1. Therefore, a desulfurization process to reduce sulfur content is mandatory for clean petroleum utilization. Hydrodesulfurization is currently mature in industry, while this process is costly, energy intensive and environmentally unfriendly due to CO2 emission and H2S production2,3. Alternative cost-effective desulfurization process with environmentally benign sulfur-containing products remains unreported. Here we demonstrate that the desulfurization of a heavy oil model compound dibenzothiophene can be successfully achieved under methane environment over creatively designed dual catalyst system, generating a new sulfur-containing product CS2. Control experiments indicate that the presence of methane as well as catalyst components for direct desulfurization and methane activation are all required. The reaction process is better understood by extensive evidences from isotope labeling experiments, catalyst and product characterizations, density functional theory calculations and verification experiments, based on which a reasonable catalytic mechanism is proposed. It is found that methane-assisted desulfurization requires more stringent conditions, where sulfur vacancy abundance, methane activation capability and surface sulfur transfer are all indispensable. This study pioneers a transformational desulfurization route, which is more economically and environmentally attractive for petroleum processing industry.

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“…因此, 汽油脱硫的关键在于催化裂化汽油中噻吩类硫化物的脱除. 溶剂萃取脱硫具有高脱硫率、操作简单、过程缓和环保等特点, 最适宜作为加氢脱硫工艺的原料预处理技术, 提高加氢脱硫产品质量 [50] . 由于原料中噻吩类硫化物 (芳香性硫化物)极性与非硫烃类组分极性差距较小, 溶剂的筛选至关重要 [51] .…”

Section: 目前对芳烃的分离发展最成熟的技术是芳烃抽unclassified

Development of solvent extraction separation process for clean oil production

et al. 2018

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Solvent extraction separation process is widely used in art of petrochemical engineering which provides a method for clean oil production. In this paper, the development of solvent extraction separation process has been described, such as aromatics extraction process, solvent extraction desulfurization process, and critical components oriented separation process. The advantage of solvent extraction separation in the process of oil refining was carefully discussed. Finally, a prospect about the development of solvent extraction separation process was introduced, considering the social problem of the conversion of olefin in the production of China standard VI gasoline and the adjustment of product mix of gasoline.

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Extractive Desulfurization of Gas Oils: A Perspective Review for Use in Petroleum Refineries

Cited by 54 publications

References 117 publications

Assessment of the Oxidative Desulfurization of Middle Distillate Surrogate Fuels with Spectroscopic Techniques

Assessment of the Oxidative Desulfurization of Middle Distillate Surrogate Fuels with Spectroscopic Techniques

Methane-Assisted Catalytic Desulfurization in an Environmentally Benign Way

Development of solvent extraction separation process for clean oil production

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