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Patents - Sulphuric Acid

A flue gas desulfurization process in which a SO2-containing flue gas stream is contacted with a recirculating stream of an aqueous medium containing concentrated sulfuric acid and hydrogen peroxide, to yield a desulfurized flue gas stream and to produce additional sulfuric acid in .

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Dr. Y.A. Liu Publications - design.che.vt.edu

Key claims in this patent have guided the successful development and demonstration of a continuous magnetic separation process for desulfurization of selectively sized powdered coal at ORNL during 1978 and 1980. Industrial Research recognized the latter development as one of its IR100 invention awards in 1981. Books

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Auterra Inc. Awarded Oxidative Desulfurization Patents

Auterra Inc. Awarded Oxidative Desulfurization Patents . Builds Patent Portfolio for Crude Oil Decontamination and Upgrading Process Technology . Malta, New York – February 28, 2013 - Auterra Inc., a clean energy company, has received notice of allowance on a number of patents for its FlexDS upgrading process technology. Auterra's proprietary

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Process for Sulfur Reduction from High Viscosity Petroleum ...

The hydro-desulfurization is by far the most studied process. This process is based on catalyst systems comprising of transition metals such as Ni, Co, Mo supported on Al2O3 and convert the sulfur species to into H2S. The H2S, again cannot be disposed off and needs to .

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Adsorption desulfurization process for hydrocarbons and a ...

* PDF is temporarily not available for this patent. There was a technical issue with this week's patent images, we are working on getting it resolved. Please check back later. Thank you for your patience. Title: Adsorption desulfurization process for hydrocarbons and a reaction apparatus therefor ...

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An evaluation of desulfurization technologies for sulfur ...

The current industrial method for removal of sulfur from fuels is hydrodesulfurization (HDS), which is a high temperature, high pressure catalytic process. This makes HDS a very costly option for deep desulfurization. Moreover, HDS is not effective for removing heterocyclic sulfur compounds such as dibenzothiophene (DBT) and its derivatives, especially 4,6-dimethyldibenzothiophene (4,6-DMDBT).

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Oxidative Processes of Desulfurization of Liquid Fuels

deep desulfurization of light oil. This desulfurization process includes two stages: (i), oxidation in a first step; and (ii), liquid extraction at the end. It is evident that the greatest advantages of the ODS process are low reaction temperature and pressure, and that expensive hydrogen is not used in the process.

  • Published in: Journal of Chemical Technology & Biotechnology · 2010Authors: J M Camposmartin · M C Capelsanchez · P Perezpresas · J L G FierroAffiliation: Spanish National Research CouncilAbout: Light crude oil · Flue-gas desulfurization · Catalysis[PDF]Get Price

"Oxidative Desulfurization" - The United States ...

Ultrasound-Assisted Oxidative Desulfurization Mei, H.; Mei, B. W.; Yen, T. F. Fuel, 82, 405 (2003) Chemistry: oil, H 2O 2 solution, catalyst, phase transfer reagent Original patent assigned to SulphCo Un-optimized technology Ultrasound greatly enhances reactivity 8 Conversion of DBT to DBTO with and without the use of ultrasound

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DESULFURIZATION OF NAPHTHA BLENDS - ExxonMobil .

Feb 18, 2016 · A process for desulfurizing a delayed coker naphtha in a catalytic naphtha desulfurization process in which the feed comprising the delayed coker naphtha is passed over a silicon trap comprising a high surface area inert alumina of low metals content prior to being hydrodesulfurized in an olefin-retentive, catalytic naphtha hydrodesulfurization process.

  • Authors: Stuart S Shih · William J NovakAffiliation: ExxonmobilGet Price

30 Recent Patents on Chemical Engineering, 2010, 30-37 ...

patent applications on oxidative desulfurization. Oxidative desulfurization (ODS) process is a sulfur removal method which uses oxidative reactions instead of

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US Patent for Process for oxidative desulfurization with ...

The process provided herein is concerned with disposal of oxidized sulfur compounds formed by oxidative desulfurization. The process uses solid base catalyst pretreated with a base and eliminates the need to separate the sulfones from the hydrocarbon streams and recover the hydrocarbons.

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Hydrodesulfurization - Wikipedia

Hydrodesulfurization (HDS) is a catalytic chemical process widely used to remove sulfur (S) from natural gas and from refined petroleum products, such as gasoline or petrol, jet fuel, kerosene, diesel fuel, and fuel oils. The purpose of removing the sulfur, and creating products such as ultra-low-sulfur diesel, is to reduce the sulfur dioxide (SO

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US 2008/0116113 A1 - Desulfurization Process The Lens ...

A process in accordance with claim 1, wherein the pressure in said desulfurization zone is in the range of from about 50 to about 750 psig and wherein the pressure in said regeneration zone is in the range of from about 10 to about 250 psig.

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Oxidative Processes of Desulfurization of Liquid Fuels

deep desulfurization of light oil. This desulfurization process includes two stages: (i), oxidation in a first step; and (ii), liquid extraction at the end. It is evident that the greatest advantages of the ODS process are low reaction temperature and pressure, and that expensive hydrogen is not used in the process.

  • Published in: Journal of Chemical Technology & Biotechnology · 2010Authors: J M Camposmartin · M C Capelsanchez · P Perezpresas · J L G FierroAffiliation: Spanish National Research CouncilAbout: Light crude oil · Flue-gas desulfurization · Catalysis[PDF]Get Price

US Patent # 7,182,918. Desulfurization process - Patents

Desulfurization process Abstract. A hydrocarbon desulfurization system that circulates fluidizable solid particles through a fluidized bed reactor, a fluidized bed regenerator, and a fluidized bed reducer to thereby provide for substantially continuous desulfurization of a hydrocarbon-containing fluid stream and substantially continuous regeneration of the solid particles.

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Review on Recent Patents in Sulfur Removal from Liquid ...

EBSCOhost serves thousands of libraries with premium essays, articles and other content including Review on Recent Patents in Sulfur Removal from Liquid Fuels by Oxidative Desulfurization (ODS) Process. Get access to over 12 million other articles!

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Desulfurization agent and process - patents.google

United States Patent Oiice 3,598,573 DESULFURIZATION AGENT AND PROCESS Alfred Freissmuth, Trostberg, Walter Heinl, Garching, and Herbert Knahl and Erich Pfluger, Trostherg, Germany, and Jan Schokkenbroek, Alkmaar, Netherlands, assignors to Suddeutsche Kalkstickstotf-Werke Aktiengesellschaft, Trostberg, Germany No Drawing.

Coal Liquefaction desulfurization process(Patent) | DOE ...

Abstract. In a solvent refined coal liquefaction process, more effective desulfurization of the high boiling point components is effected by first stripping the solvent-coal reacted slurry of lower boiling point components, particularly including hydrogen sulfide and low molecular weight sulfur compounds, and then reacting the slurry with a solid sulfur getter material, such as iron.

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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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Recovery of SO2 and MgO from By-Products of MgO Wet Flue ...

Nov 01, 2014 · An industrial demonstration unit using natural gas as a heat source was built to calcine the by-products of MgO wet flue gas desulfurization from power plants; influencing factors on the SO 2 content in calciner gas were comprehensively analyzed; and an advantageous recycling condition of MgO and SO 2 from by-products was summarized. Results showed that the SO 2 content in the calciner .

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AMMONIA-BASED DESULFURIZATION PROCESS AND .

Jul 11, 2019 · Chinese Patent CN 100428979C discloses an ammonia-based desulfurization process using a multi-section structure, including an oxidation section, a crystallization section, a cooling absorption section, a main absorption section, and a dehydration-demisting section from bottom to top.

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