High-sulfur petroleum coke (HSPC), that is a by-product from slag oil in the coking process of refining, shows versatility values in practical applications and, however, concentrates the majority of organic sulfur. Herein, we design and construct a highly effective CTAB@HPA composites to be explored for the catalytic oxidative desulfurization of HSPC under mild …
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high-sulfur Egyptian petroleum coke, J. Inst. Fuel, Sept. 1976, pp. 139
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Studies have been undertaken of the desulfurization of petroleum cokes in relation to the utilization of the delayed and fluid cokes arising from the refining of Athabasca oil-sands bitumen ...
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Petroleum consists of a range of hydrocarbons along with sulfur, nitrogen and oxygen compounds [1].The sulfur content of heavy crude oil varies from 0.1% to 15%, the sulfurs exist as sulfides, disulfides, mercaptans, thiophenes, benzothiophenes, dibenzothiopenes, benzonaphthothiophenes, and dinaphthothiophenes [2], [3].Air pollution is caused by …
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oil desulfurization specifically. Sulfur in crude oil Sulfur is the most abundant element in petroleum after carbon and hydrogen. The average sulfur content varies from 0.03 to 7.89 mass% in crude oil (Mehran et al. 2007). The sulfur compounds can be found in two forms: inor-
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user of heavy oil fractions, has been forced to reduce the sulfur content of fuel oil from 3.5 to 0.5 wt% according to the regulations of the International Maritime Organization (IMO)2). However, desulfurization of heavy fuel oil is harder than for light fractions, because of the …
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The last two decades have witnessed growing research interest in fuel oil desulfurization (Fig. 2) driven largely by the increasing fuel consumption worldwide [36], [37], [38]. Desulfurization processes are aimed at minimizing contamination and improving the efficiency of petroleum products and their fractions. The desulfurization technologies ...
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Abstract— Because of the requirement for low sulfur content of fuel oils, it is necessary to develop alternative methods for desulfurization of petroleum fractions. Due to the disadvantages of …
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In model oil desulfurization, almost complete desulfurization efficiency was achieved at optimal operating conditions. The extraordinary desulfurization efficiency was attributed to high electron transfer between the as-prepared catalyst and organosulfur compounds. The catalyst was investigated for varying the amount of DBT while all other ...
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Development of new biocatalytic systems of sufficient activity and stability for crude oil desulfurization might be attractive in the future. Taking into account the fast progress in biotechnology, sulfur removal by biocatalysts during crude oil transportation is not science fiction. At the refinery site, biocatalytic processes might also be ...
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Upon decreasing the grain size, the petroleum coke desulfurization rate increased, but this was mainly due to an early increase in the contact area and a decrease in the petroleum coke particle size. The interior sulfur-containing groups (embedded in petroleum coke on the skeleton of thiophene, sulfide, and other organic sulfur groups) were ...
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Strategies for heavy oil desulfurization were evaluated by reviewing desulfurization literature and critically assessing the viability of the various methods for heavy oil.
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Sulfur removal by solvent extraction on gas oil A. desulfurization at the higher solvent ratios, albeit at relatively low yields (cf. the results in Table 2). The relative desulfurization effectiveness of the three solvents can be more easily visualized by employing the effectiveness factor, K, defined as K = D/(IO0 -- Y ), where D is the ...
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The physical and chemical indicators of petroleum coke after desulfurization were not affected. Thermodynamic calculation results showed that the desulfurization reaction was more favorable at higher temperatures. However, the reaction was also affected by other factors; thus, the desulfurization efficiency decreased when the desulfurization ...
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Deep desulfurization of fuels is needed to reduce sulfur oxides (SOx) emissions during combustion causing smog, global warming, and acid rain. Among petroleum-derived fuels, liquefied petroleum gas (LPG) stands out as a fuel as it causes less emissions.
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Desulfurization and hydrogenation of aromatics in diesel oil were investigated in an isothermally operated trickle-bed reactor 500 mm long and with a 19-mm ID, using commercial bifunctional NiMo ...
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This article is cited by 11 publications. Jiazhuang Tian, Qiuyun Mao, Zihan You, Qifan Zhong. Investigation of Petroleum Coke Gasification with CO2/H2O Mixtures and S/N Removal Mechanism via ReaxFF MD Simulation.
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Pyrolysis is the first-step for carbon-based materials experiencing high-temperature processes, such as gasification, desulfurization, calcination, and combustion [29], [30].Calcination transforms green petcoke into calcined petcoke with a higher true density and much lower S content [31].Both pyrolysis and concurrent limited combustion occur due to the stoichiometry …
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Desulfurization of fuels is a critical process in oil refining due to the destructive effects of sulfur compounds on human health and the environment. Naphtha is an important middle distillate product, which is utilized as an automobile, engine, and …
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The desulfurization of four petroleum distillates i.e. kerosene, light gas oil (LGO), heavy gas oil (HGO) and light cycle oil (LCO), with sulfur content 0.206–1.272% w/w, was carried out using the hydrogen peroxide-acetic acid oxidative system, in combination with extractive desulfurization performed by imidazolium based ionic liquids. ...
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Efficient desulfurization processes not only enhance product value but also play a pivotal role in the oil and gas industry's sustainability journey. By mitigating environmental impact and ensuring smoother operations, the …
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The removal of sulfur by deep hydrodesulfurization is expensive and environmentally unfriendly. Additionally, sulfur is not separated completely from heterocyclic poly-aromatic compounds. In nature, several microorganisms (Rhodococcus erythropolis IGTS8, Gordonia sp., Bacillus sp., Mycobacterium sp., Paenibacillus sp. A11-2 etc.) have been …
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Key-Words: Desulfurization, Petroleum fractions, Activated carbon, Ultrasound-assisted oxidative desulfurization. download Download free PDF View PDF chevron_right. A REVIEW OF NON-CONVENTIONAL METHODS FOR THE DESULFURIZATION OF RESIDUAL FUEL OIL. Abdullah Aitani. Petroleum Science and Technology, 2000.
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The Catalytic Desulfurization (CDS) process is a key technology in the oil refining industry, which helps to remove sulfur-containing impurities from crude oil, feedstocks, and …
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Thus, petroleum desulfurization is a challenging task for the refiners under the current environmental regulations. Keeping in view this scenario, worldwide researchers are striving to develop new desulfurization techniques that are cost effective and more efficient than HDS. In this regard, several new techniques for desulfurization of ...
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The last two decades have witnessed growing research interest in fuel oil desulfurization (Fig. 2) driven largely by the increasing fuel consumption worldwide [36], [37], [38]. Desulfurization processes are aimed at minimizing contamination and improving the efficiency of petroleum products and their fractions.
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The slightly lower ODS performance of Ni/AC–NaClO system for real oil samples as compared to that of model oil (DBT) is because real oil in addition to DBT, also contains other types of sulfur compounds like thiophene, benzothiophene, and mercaptan (van Rheinberg et al., 2008), which hindered the overall desulfurization performance of Ni/AC ...
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Mitra et al. [9] synthesized V 2 O 5 /Al 2 O 3 and used it as a heterogeneous catalyst with cumene hydroperoxide (CHP) for desulfurization oil at 1 atmosphere. The oxidation process of sulfur compounds is shown in Fig. 10 a. This ODS process was economical due to recycling CHP about 80 %. CHP has the role of oxygen supply for the oxidation process.
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The desulfurization of petroleum coke under static conditions is a reaction of external diffusion control, while this process under dynamic conditions is a reaction of internal diffusion control ...
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desulfurization of crude oil is urgently needed so that the sulfur contents in petroleum product could be reduced from the root. The desulfurization methods including variations thereon that …
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One of the major challenges in the petroleum industry is to produce fuels and other products with the lowest level of impurities. The presence of impurities in hydrocarbon products can cause severe problems such as environmental pollution caused by emission of greenhouse gases [1].Sulfur compounds have been recognized as important impurities in fuels and other …
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Petroleum coke desulfurization has been experimentally studied in this work using molten caustic leaching method. Several experiments have been carried out using different values of alkali to coke mass ratio, temperature, time and mesh size. In addition, Taguchi L9 design has been applied as a statistical tool to study the effects of alkali to ...
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Hydrodesulfurization. Desulfurization of fuels is commonly achieved by catalytic hydrodesulfurization (HDS), in which the organic sulfur species are converted to H 2 S and the corresponding hydrocarbon, as in the following reaction: R-SH + H 2 → R-H + H 2 S. Here R represents an alkyl group, such as methyl (CH 3 –), or ethyl (C 2 H 5 –). Figure 9.2 shows the …
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Abstract⎯The oxidative desulfurization of crude petroleum from the Maiorskoe field (Orenburg oblast, Rus-sia) with hydrogen peroxide in the presence of organi c and inorganic acids has been studied. A procedure for the recovery of oxidized sulfur-containing compounds from the petroleum by extracting the oxidation prod-
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Petroleum coke desulfurization methods include conventional roasting, intensified roasting, and the use of additives during the roasting process. Conventional roasting desulfurization [19], [20] involves breaking the C–S bonds at …
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The sulfur in petroleum coke is harmful to carbon products, underscoring the importance of desulfurization for high-sulfur petroleum coke. This paper proposes a method combining alkaline catalytic roasting with ultrasonic oxidation for the deep desulfurization of high-sulfur petroleum coke. The results show that the desulfurization rate reaches 88.99% and the …
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Adsorptive desulfurization involves the removal of organic sulfur compounds from petroleum fractions by physicochemical adsorption processes. This is a low temperature and …
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Effective parameters on desulfurization of petroleum coke, other than temperature, include alkali to feed (petroleum coke) mass ratio, time and mesh size in the ranges of 0.5-1.5, 1-3 h and 200-600 mm, respectively. In this work, petroleum coke desulfurization conditions using solid KOH have been studied. Maximum petroleum coke desulfurization ...
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