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The desulfurization efficiency for CTP with 0.9wt.% sulfur content reaches 91.1wt.% at a xylene-to-CTP volume ratio of 2.5, a CTP-to-TCA mass ratio of 0.5, an ultrasonic treatment duration of ...


Desulfurization. Improving the quality of the crude-oil and petroleum-based fuels can help increase their value and reduce some of their harmful effects. Industrial Sonomechanics ISM offers high-amplitude ultrasonic processors used to improve key properties of crude oil and petroleum-based fuels.


Oxidative desulfurization (ODS) is currently enjoying popularity as a highly efficient and conveniently operating alternative or complementary to hydrodesulfurization (HDS) technique for resilient sulfur compounds removal from petroleum distillate fractions used as transportation fuels [1,2].The process is performed at ambient operating conditions in two steps, i.e., …


After desulfurization, petroleum coke turns to be loose, fault structure rises, and content of sulfur element drops. (002) diffraction peak is more acute and crystallinity is improved. The characteristic absorption peak at 478, 744 and 863 cm-1 is significantly


UNESCO – EOLSS SAMPLE CHAPTERS COAL, OIL SHALE, NATURAL BITUMEN, HEAVY OIL AND PEAT – Vol. I - Desulfurization of Coal - Yasuo Ohtsuka ©Encyclopedia of Life Support Systems (EOLSS) 3.1 Physical Cleaning Physical cleaning of coal is essentially based on the differences in either specific gravity


The desulfurization yield, with the use of 30% H 2 O 2 solution, of commercial light oil was 75% following 24 h of photo-irradiation and the sulfur content in the light …


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 ...


The removal of sulfur compounds from liquid petroleum gas (LPG) was investigated using a fixed-bed flow sorption system. Copper-modified bentonite adsorbents significantly enhanced the desulfurization of LPG. Several factors …


Alkali desulfurization of petroleum coke is an important technology, can improve the performance of the final products of petroleum coke, while reducing air pollution. This paper studied the conditions for desulfurization of calcined petroleum coke using NaOH solid powders. The experimental results show that, the grain size in the range of experiment did not seem to …


Petroleum contains various kinds of heterocyclic organosulfur compounds refractory to conventional hydrodesulfurization. Several mesophilic and thermophilic bacteria, which are capable of cleaving efficiently carbon-sulfur bonds in dibenzothiophene as a model compound, have been isolated.


Vacuum-assisted alkali roasting desulfurization can reduced the sulfur content of petroleum coke to 0.18%, and the desulfurization rate can reached 98.54% at 1600 °C. The mechanism of sulfur removal in petroleum coke was preliminarily explored by Gauss, Multiwfn and VMD software, and the experimental samples were analyzed by Carbon–Sulfur Analyzer, XPS …


An improved desulfurization process for removing sulfur from hydro treated diesel oil based on the oxidation of thiophenic type sulfur-containing compounds with H 2 O 2 and acetic acid (AcOH) using H 2 SO 4 as catalyst has been studied. The experimental results show that the sulfone content in the oxidation product increased rapidly with an increase in acetic acid and …


Desulphurization of Petroleum Coke: A Review 1. A number of processes ranging from purely physical such as solvent extraction. to thermal or chemical …


Adsorptive desulfurization of model fuel was studied through batch and continues processes under mild temperature and normal atmospheric pressure. ... petroleum refineries use hydrodesulfurization ...


Several microorganisms were found to desulfurize dibenzothiophene (DBT), a representative of the organic sulfur compounds in petroleum, forming a sulfur-free compound, 2-hydroxybiphenyl. They are promising as biocatalysts in the microbial desulfurization of petroleum because without assimilation of the carbon content, they remove only sulfur ...


Desulfurization of delayed petroleum coke. Patent Kapner, R; O'Brien, R. Delayed coke is desulfurized by first contacting the coke with an active sulfur-bearing gas at a temperature high enough to produce a reaction between the sulfur in the coke and the active sulfur in the gas, and then holding the coke in contact with the gas at said high ...


Published January 1969. This report is concerned with technology and costs for the desulfurization of petroleum stocks. Although the hydrodesulfurization of light and middle distillates such as gasoline, naphtha, kerosene, and gas oil is also evaluated, the emphasis here is on sulfur removal from the resid- ual fuel oil where there is a growing concern today …


Petroleum Refinery Engineering ›› 2022, Vol. 52 ›› Issue (1): 16-21. • PROCESSING • Previous Articles Next Articles Deep desulfurization study of fuel oil by Fe-based magnetic ionic liquid extraction coupling catalytic oxidation Yu Wenhui, Wang ...


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-


Desulfurization is the process of removing sulfur from something to prevent contamination. Also known as hydrodesulfurization or HDS, this chemical process reduces the sulfur dioxide emissions and converts them to sulfuric acid. The sulfuric acid is then used in car batteries and fertilizer. The most commonly required desulfurization process is ...


In this study, oxidative desulfurization (ODS) of modeled and real oil samples was investigated using manganese-dioxide-supported, magnetic-reduced graphene oxide nanocomposite (MnO2/MrGO) as a catalyst in the presence of an H2O2/HCOOH oxidation system. MnO2/MrGO composite was synthesized and characterized by scanning electron …


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The removal of sulfur compounds from liquid petroleum gas (LPG) was investigated using a fixed-bed flow sorption system. Copper-modified bentonite …


1. Introduction. Oxidative desulfurization (ODS) is currently enjoying popularity as a highly efficient and conveniently operating alternative or complementary to hydrodesulfurization (HDS) technique for resilient sulfur compounds removal from petroleum distillate fractions used as transportation fuels [1,2].The process is performed at ambient operating conditions in two …


The desulfurization yield, with the use of 30% H 2 O 2 solution, of commercial light oil was 75% following 24 h of photo-irradiation and the sulfur content in the light oil was reduced from 0.2 wt% to less than 0.05 wt%. 145 In these studies, …


In this study, oxidative desulfurization (ODS) of modeled and real oil samples was investigated using manganese-dioxide-supported, magnetic-reduced graphene oxide nanocomposite (MnO 2 /MrGO) as a catalyst in the presence of an H 2 O 2 /HCOOH oxidation system. MnO 2 /MrGO composite was synthesized and characterized by scanning electron microscope (SEM), …


Sulfur removal is an important component of lead–acid battery recycling. Sulfuric acid from the battery is usually neutralized with soda ash (Na 2 CO 3) or with caustic (NaOH), treated to remove heavy metals and discharged to the public sewer system in accordance with local, state and federal regulations.When there is a lead recycling plant close to a battery manufacturing …


Desulfurization of petroleum coke: a review. A number of processes ranging from purely physical such as solvent extraction to thermal or chemical treatment using different agents including hydrocarbon gases, alkali metal compounds, and hydrogen have been proposed for petroleum coke desulfurization. The complexity of the sulfur-carbon bonds in ...


Report No. 47 PETROLEUM DESULFURIZATION by SHIGEYOSHI TAKAOKA January 1969 A private report bs the PROCESS ECONOMICS PROGRAM …


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desulfurization of petroleum

Desulfurization of petroleum coke - Know More. Jun 21, 1983 0183 32 We claim 1 A process for the desulfurization and devolatilization of petroleum coke comprising the serial steps of a grinding the coke, b introducing .... Prev: ball mill machine in tanzania. Next: various stone production line, whole crusher production line.