>Home>Products>

desulfurization of petroleum:

Desulfurization of petroleum coke: a review Industrial ...

Aug 01, 1992  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.

Read More
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.

Read More
Petroleum Desulfurization – Chemical production and ...

The term deep desulfurization refers to the removal of 90 to nearly 100% of the sulfur contained in the petroleum fraction. This corresponds to an average product sulfur level of 25 ppm in naphthas, 0.1 wt% in gas oils, and 0.3 wt% in residual fuel oils. These low sulfur contents are dictated by increasingly stringent government regulations.

Read More
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 ...

Read More
Petroleum Desulfurization – Chemical production and ...

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 because of air pollution.

Read More
Desulfurization of petroleum coke: a review Industrial ...

Aug 01, 1992  This article is cited by 49 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.

Read More
Microbial desulfurization of organic sulfur compounds in ...

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 ...

Read More
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.

Read More
Petroleum Desulfurization – Chemical production and ...

The term deep desulfurization refers to the removal of 90 to nearly 100% of the sulfur contained in the petroleum fraction. This corresponds to an average product sulfur level of 25 ppm in naphthas, 0.1 wt% in gas oils, and 0.3 wt% in residual fuel oils. These low sulfur contents are dictated by increasingly stringent government regulations.

Read More
Desulfurization of Petroleum Coke Industrial ...

Article Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals.

Read More
Oxidative and extractive desulfurization of petroleum ...

Jun 01, 2021  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.

Read More
Desulfurization of high sulfur petroleum coke by molten ...

Jun 01, 2019  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 conditions using solid KOH have been studied.

Read More
Deep desulfurization of petroleum feedstocks by selective ...

desulfurization of petroleum feedstocks. 1 CHAPTER ONE: GENERAL INTRODUCTION Dissertation Organization This dissertation contains three papers in the format required for journal publication, describing the research I performed at Iowa State University. Preceding these papers is a

Read More
Biocatalytic desulfurization of petroleum and middle ...

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.

Read More
Desulfurization of heavy oil SpringerLink

Mar 01, 2012  Wallace TJ, Heimlich BN (1970) Desulfurization of petroleum residua. Patent US 3,505,210 (Esso research and engineering) Wan MW, Yen TF (2007) Enhanced efficiency of tetraoctylammonium fluoride applied to ultrasound-assisted oxidative desulfurization (UAOD) process. Appl Catal A 319:237–245. Article Google Scholar

Read More
US6210564B1 - Process for desulfurization of petroleum ...

Sulfur-containing petroleum feeds are desulfurized by contacting the feeds with staged addition of sodium metal at temperatures of at least about 250° C. in the presence of excess hydrogen to sodium metal. The formation of Na 2 S is substantially suppressed and the formation of NaSH is promoted in the desulfurization process.

Read More
Desulfurization of petroleum products - E. I. du Pont de ...

Jan 29, 1999  Catalyst desulfurization of petroleum residua feedstocks: 1986-03-18: Nongbri et al. 208/58: 4508615: Multi-stage process for demetalation, desulfurization and dewaxing of petroleum oils: 1985-04-02: Oleck et al. 208/89: 4500424: Desulfurization catalyst and process: 1985-02-19: Simpson et al. 208/216PP: 4486297

Read More
Thermophilic desulfurization of dibenzothiophene and ...

Desulfurization reactions were carried out using DBT and petroleum oils at 45°C followed by different analytical procedures. RESULTS: We report the isolation of a thermophilic bacterium Klebsiella sp. 13T from contaminated soils collected from petroleum refinery.

Read More
Optimization of operating conditions in desulfurization of ...

Jan 06, 2020  The matrix structure and properties of petcoke samples can be impressed by uniform and in situ thermal treatment. In this work, a novel hyphenated thermal approach was applied to investigate the ferromagnetic‐based desulfurization of petcoke samples and the effect of controlling parameters.

Read More
Microbial Desulfurization of Petroleum.

microbial desulfurization of petroleum. A theoretical approach was pre­ sented for obtaining cultures capable of removing organically bound sulfur from petroleum fractions of high organic sulfur content. Soil and liquid enrichments were made using soil from a storage area for high sulfur petroleum fractions. The flora was enriched with a ...

Read More
Deep desulfurization of petroleum feedstocks by selective ...

desulfurization of petroleum feedstocks. 1 CHAPTER ONE: GENERAL INTRODUCTION Dissertation Organization This dissertation contains three papers in the format required for journal publication, describing the research I performed at Iowa State University. Preceding these papers is a

Read More
Deep adsorption desulfurization of liquid petroleum gas by ...

Jan 04, 2016  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

Read More
Hydrodesulfurization FSC 432: Petroleum Refining

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 type and relative

Read More
Desulfurization of heavy oil SpringerLink

Mar 01, 2012  Wallace TJ, Heimlich BN (1970) Desulfurization of petroleum residua. Patent US 3,505,210 (Esso research and engineering) Wan MW, Yen TF (2007) Enhanced efficiency of tetraoctylammonium fluoride applied to ultrasound-assisted oxidative desulfurization (UAOD) process. Appl Catal A 319:237–245. Article Google Scholar

Read More
Desulfurization of petroleum products - E. I. du Pont de ...

Jan 29, 1999  Catalyst desulfurization of petroleum residua feedstocks: 1986-03-18: Nongbri et al. 208/58: 4508615: Multi-stage process for demetalation, desulfurization and dewaxing of petroleum oils: 1985-04-02: Oleck et al. 208/89: 4500424: Desulfurization catalyst and process: 1985-02-19: Simpson et al. 208/216PP: 4486297

Read More
Peroxide Oxidative Desulfurization of Crude Petroleum ...

Feb 07, 2018  The oxidative desulfurization of crude petroleum from the Maiorskoe field (Orenburg oblast, Russia) with hydrogen peroxide in the presence of organic and inorganic acids has been studied. A procedure for the recovery of oxidized sulfur-containing compounds from the petroleum by extracting the oxidation products with polar solvents (N,N-dimethylformamide, acetone, methyl ethyl ketone, or ...

Read More
Microbial Desulfurization of Organic Sulfur Compounds in ...

May 20, 2014  (1999). Microbial Desulfurization of Organic Sulfur Compounds in Petroleum. Bioscience, Biotechnology, and Biochemistry: Vol. 63, No. 1, pp. 1-9.

Read More
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.

Read More
Oxidative Desulfurization of Petroleum Distillate ...

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., oxidation of sulfur ...

Read More
Optimization of operating conditions in desulfurization of ...

Jan 06, 2020  The matrix structure and properties of petcoke samples can be impressed by uniform and in situ thermal treatment. In this work, a novel hyphenated thermal approach was applied to investigate the ferromagnetic‐based desulfurization of petcoke samples and the effect of controlling parameters.

Read More
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

Read More
Apparatus and method for the desulfurization of petroleum ...

Jan 01, 1995  Apparatus and method for the desulfurization of petroleum by bacteria. Patent Lizama, H M; Scott, T C; Scott, C D. A method is described 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 ...

Read More
Adsorptive desulfurization of dibenzothiophene (DBT) in ...

Industrial hydrodesulfurization method has not been efficient for removal of dibenzothiophene (DBT) from petroleum distillates. Therefore, in this current study, adsorptive desulfurization (investigated in batch mode) was carried out using functionalized carbon nanotubes (FCNTs) to reduce the amount

Read More