desulfurization of petroleum

Sulfur in Petroleum: Petroleum Desulfurization Techniques ...

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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Almost total desulfurization of high-sulfur petroleum coke ...

Dec 01, 2018· A two-stage desulfurization method for high-sulfur petroleum coke was developed using Na 2 CO 3-promoted calcination, followed by ultrasonic-assisted chemical oxidation.Using a Na 2 CO 3 to coke mass ratio of 1:4 and an average particle size of 80 µm for the coke, the desulfurization efficiency of the coke reached a maximum of 67.2% using Na 2 CO 3-promoted calcination at 900 °C for 2 h with ...

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Desulfurization of heavy oil

from the subsequent discussion, many of the desulfurization methods proposed in literature are only useful for the desulfurization of lighter fractions and cannot be employed for heavy oil. This review will assess opportunities for heavy oil desulfurization specifically. Sulfur in crude oil Sulfur is the most abundant element in petroleum after

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Deep adsorption desulfurization of liquid petroleum gas by ...

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 that influence desulfurization, including the copper loading, the baking temperature, the v

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(PDF) Desulfurization of Petroleum Coke: A Review

Desulfurization of Petroleum Coke: A Review Article (PDF Available) in Industrial & Engineering Chemistry Research 31(8) · August 1992 with 7,162 Reads How we measure 'reads'

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Petroleum coke - Wikipedia

Petroleum coke, abbreviated coke or petcoke, is a final carbon-rich solid material that derives from oil refining, and is one type of the group of fuels referred to as cokes.Petcoke is the coke that, in particular, derives from a final cracking process—a thermo-based chemical engineering process that splits long chain hydrocarbons of petroleum into shorter chains—that takes place in units ...

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Investigation of the Desulfurization of Petroleum ...

Investigation of the Desulfurization of Petroleum Distillates using Novel Ionic Liquids by Ramogohlo Eunice Sefoka A dissertation submitted to the Faculty of Engineering and the Built Environment, University of the Witwatersrand, Johannesburg, in fulfilment of the requirements for the degree of Masters of Science in Engineering. Johannesburg, 2016

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What is Desulfurization? (with pictures)

Aug 05, 2020· 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 ...

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Apparatus and method for the desulfurization of petroleum ...

@article{osti_870117, title = {Apparatus and method for the desulfurization of petroleum by bacteria}, author = {Lizama, Hector M and Scott, Timothy C and Scott, Charles D}, abstractNote = {A method for treating petroleum with anaerobic microorganisms acting as biocatalysts that can remove sulfur atoms from hydrocarbon molecules, under anaerobic conditions, and then convert the sulfur atoms to ...

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US4389388A - Desulfurization of petroleum coke - Google ...

Petroleum coke is processed to reduce the sulfur content. Ground coke is contacted with hot hydrogen, under pressurized conditions, for a residence time of about 2 to 60 seconds. The desulfurized coke is suitable for metallurgical or electrode uses.

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Reduction and Desulfurization of Petroleum Coke in Ammonia ...

NH3-reducing desulfurization was demonstrated using a high-sulfur coke calcining desulfurization experiment at 1000 °C, and the sulfur chemical reactions of the three aromaticities of thiophene were studied during desulfurization. Results showed that NH3-reducing desulfurization could significantly remove sulfur in the coke, and the best operation temperature was approximately 800 °C, at ...

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Optimization of operating conditions in desulfurization of ...

desulfurization,5 desulfurization by recycling coking oven gas,6 and blowing additional gas.7 On the other hand, sul-fur loss during calcination of coke samples is typically referred to thermal desulfurization, and it is known that Received: 27 August 2019 Revised: 9 December 2019 Accepted: 10 December 2019 DOI: 10.1002/apj.2398

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Sulfur removal from crude oil using supercritical water ...

May 25, 2016· Desulfurization of crude oil using supercritical water (SCW) is one of the promising nonconventional processes for upgrading oil. SCW is an excellent solvent for high molecular weight organic compounds in crude oils. Low sulfur content of crude oil is particularly preferred.

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Desulfurization of petroleum coke: a review | Industrial ...

Studies on the Desulfurization of Petroleum Coke by Organorefining and Other Chemical and Biochemical Techniques Under Milder Ambient Pressure Conditions. Petroleum Science and Technology 2011, 29 (14), 1482-1493.

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WO1999038937A1 - Desulfurization of petroleum products ...

The invention discloses a process for the desulfurization of petroleum products by contacting with acidic organic polymers. Preferably, highly fluorinated and, most preferably, perfluorinated acidic polymers are used.

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Oxidative Desulfurization of kerosene in the presence of ...

Introduction. New environmental concerns necessitate low sulfur requirements in hydrocarbon based distillate fuels so that desulfurization of petroleum-derived fuels becomes an important part of refining processes. fuels so that desulfurization of petroleum-derived fuels becomes an important part of refining processes.

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Desulfurization of Petroleum Coke via Alkali Calcination ...

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 influence desulphurization.

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Desulfurization of petroleum coke: a review | Industrial ...

This article is cited by 47 publications. Qifan Zhong, Yu Zhang, Sharmin Shabnam, Jin Xiao, Adri C. T. van Duin, Jonathan P. Mathews. Reductive Gaseous (H2/NH3) Desulfurization and Gasification of High-Sulfur Petroleum Coke via Reactive Force Field Molecular Dynamics Simulations.

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An evaluation of desulfurization technologies for sulfur ...

Reactive adsorption desulfurization (RADS) combines the advantages of both the catalytic HDS and adsorption desulfurization. 286–291 In the RADS, sulfur-containing molecules react with a solid adsorbent in the presence of hydrogen. 286 Conoco Phillips Petroleum Co. developed a new S–Zorb process for the production of low-sulfur gasoline by ...

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Residue Desulfurization - MDR

Residue desulfurization is a high-pressure catalytic hydrotreating process. Chevron Lummus Global, a joint venture between McDermott's Lummus Technology and Chevron U.S.A., Inc., offers several proven technologies for residuum desulfurization.. CLG's atmospheric residuum desulfurization (RDS) and vacuum residuum desulfurization (VRDS) technologies produce low sulfur fuel oil or feedstock ...

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Study of variation grain size in desulfurization process ...

Desulfurization of petroleum coke process can be done in two ways, which are thermal desulfurization and hydrodesulphurization. This study aims to determine the effect of various grain size on sulfur, carbon, and chemical bond which contained by calcined petroleum coke. The raw material use calcined petroleum coke with 0.653% sulfur content.

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Sulfex™ - Desulfurization simplified - Alt Petroleum

Stringent EPA and global environmental regulations are demanding dramatic reductions in sulfur levels in fossil fuels to less than 15 parts per million (PPM) from several hundred PPM. Currently, desulfurization occurs in a process called Hydro-Desulfurization that uses hydrogen gas, high temperatures (300 to 400 degrees Celsius) and high pressures (30 to 130 atmospheres) to modify […]

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Alternative Petroleum Technologies' Sulfex ...

Alternative Petroleum Technologies, Inc. ("APT") announced that it has further refined its patent-pending and cost-saving Sulfex™ desulfurization processes for distillate fuels, leading to additional reduction in capital and operational expenditure, as well as lower required footprint.

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Carbon Nanomaterials for the Adsorptive Desulfurization of ...

The increasing demand for cleaner fuels and the recent stringent regulations of commercial fuel specifications have driven the research of alternative methods to upgrade the current industrial desulfurization technology. Adsorptive desulfurization, the removal of refractory sulfur compounds using appropriate selective tailor-made adsorbents, has shown up as a promising alternative in the ...

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