(a) Direct removal of sulfur compounds from ionic liquids by distillation. The boiling point of heavier organosulfur compounds, such as alkylated dibenzothiophenes, are high (>340 °C) and it would require vacuum distillation. Thus, this method is applicable only to desulfurization of lighter petroleum cuts.
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 hydrogen sulfide. The microorganisms utilized are from the family known as the "Sulfate ...
An improved process for the desulfurization of petroleum feeds utilizing sodium metal comprising contacting said petroleum feeds with staged addition of sodium metal at a temperature of at least about 250 °C in the presence of excess of hydrogen to sodium metal to substantially suppress the formation of Na2S and to promote the formation of NaSH.
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.
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
Sulfur removal from hydrotreated petroleum fractions using ultrasound-assisted oxidative desulfurization process. ... F. Zannikos, E. Lois, S. StournasDesulfurization of petroleum fractions by oxidation and solvent extraction. Fuel Process Technol, 42 (1995), pp. 35-45.
Biocatalytic Desulfurization (BDS) represents an alternative approach to the reduction of sulfur in fossil fuels. The objective is to use bacteria to selectively remove sulfur from petroleum and middle distillate fractions, without the concomitant release of carbon.
A Review on Bio- And Adsorptive Desulfurization of Diesel Fuel Mojirade M. Oloruntoba 1,2*, D. S. Aribike 2 and S. C. U. Nwachukwu 3 1Prototype Engineering Development Institute (PEDI), Ilesa, Nigeria. 2Department of Chemical and Petroleum Engineering, University of Lagos, Akoka, Lagos, Nigeria.
Desulfurization of heavy oil ... for desulfurization of heavy oils. Each desulfurization method will be assessed to determine its applicability to heavy oil in general and where possible, with focus on heavy ... Sulfur is the most abundant element in petroleum after
Abstract: To investigate the variation of true density and the sulfur removal forms during the ultrahigh-thermal desulfurization process, two types of delayed petroleum cokes with different sulfur contents were calcined at temperatures up to 2500 °C at two distinct ...
In this review, strategies for crude oil desulfurization are evaluated by reviewing desulfurization literature. The most important characteristics of crude oil that affect the market price are its sulfur content and gravity. Low sulfur content of crude oil is particularly preferred. Petroleum includes crude oil, natural gas, and heavy oil.
Deep desulfurization of petroleum feedstocks by selective adsorption and extraction Scott Groh McKinley Iowa State University Follow this and additional works at:https://lib.dr.iastate.edu/rtd Part of theInorganic Chemistry Commons, and theOrganic Chemistry Commons
Nov 06, 2013· Desulfurization methods are critically reviewed and analyzed with particular emphasis on desulfurization sorbents for use in compact fuel processors for fuel cells. Desulfurization can be carried out both upstream and downstream of the reformer. Promising sorbents have been developed for direct deep desulfurization of gaseous and liquid fuels.
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desulfurization. 1 Introduction Presence of sulfur in heavy petroleum fractions leads to emission of SOx which endanger public health. In order to control air pollution because of heavy petroleum fractions combustion, most of the countries released a new regulation requiring the use of low-sulfur petroleum …
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 ...
Petroleum Coke, Anodes, Shaft Calcining, Sulphur, Desulfurization. 1. Introduction . Thermal desulfurization (TDS) of petroleum coke is a well-studied phenomenon and a recent paper discussed the differences between TDS in a rotary kiln and a shaft calciner . The heat-
Deep desulfurization of hydrodesulfurized diesel oil. The feasibility of diesel oil desulfurization was investigated using hydrodesulfurization (HDS)-treated diesel oil (total organic sulfur, 259 ppm) obtained from the Institute of Fushun Petroleum and Petro-chemicals.
May 20, 2014· Sulfur removal from petroleum is important from the standpoint of the global environment because the combustion of sulfur compounds leads to the production of sulfur oxides, which are the source of acid rain. As the regulations for sulfur in fuels become more stringent, the existing chemical desulfurizations are coming inadequate for the "deeper desulfurization" to produce lower-sulfur ...
Therefore, desulfurization of light oil is extremely important in the petroleum-processing industry. Several processes have been proposed in the past to deal with the problem of removing these compounds from light oil. The most important and common industrial process is that of treating the fuel under high temperatures and high pressures with
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 µm, respectively. In this work, petroleum coke desulfurization …
Alternative Petroleum Technology (APT) is an environmental technology company dedicated to comprehensive cost-effective solutions to environmental problems. We offer technologies and expertise to help operators of compression-ignition engines and industrial boilers meet increasingly stringent emissions requirements.
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