sulfur removal conversion

sulfur removal conversion

8.13 Sulfur Recovery - US EPA

Sulfur recovery refers to the conversion of hydrogen sulfide (H 2 S) to elemental sulfur. Hydrogen ... high sulfur removal efficiencies can be achieved using 2 or more reactors (or stages) in series with sulfur condensed and recovered after each stage. Each

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Recovery of Sulfur From Phosphogypsum: Conversion of ...

produce sulfur dioxide, which is converted to sulfuric acid. The U.S. Bureau of Mines has investigated the reductive roasting of gypsum (3), the conversion of calcium sulfide (CaS) to elemental sulfur (4), and sulfur dioxide emission control (5). The latter process involved the reaction of sulfur dioxide and hydrogen sulfide to produce elemental

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The Claus Sulfur Recovery Process — Sulfur Recovery ...

Sulfur recovery refers to the conversion of hydrogen sulfide (H2S) to elemental sulfur. Hydrogen sulfide is a by-product of processing natural gas and refining high-sulfur crude oils. There are many sulfur recovery technologies available for different applications, however the most common conversion method used is the Claus process.

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US7780933B2 - Method of removing sulfur compounds from ...

All sulfur compounds can be efficiently removed from natural gas that contains hydrogen sulfide and other sulfur compounds such as mercaptan without using physical absorption. The process comprises an absorption step of treating natural gas by means of a chemical absorption method using an amine-containing solution to mainly remove hydrogen sulfide and carbon dioxide, an adsorption step of ...

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Denitrifying sulfur conversion-associated EBPR: The effect ...

The performance of the denitrifying sulfur conversion-associated enhanced biological phosphorus removal (DS-EBPR) process tends to be unstable and requires further study and development. This in turn requires extensive study of the anaerobic metabolism in terms of its stoichiometry and kinetics. Thi

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Recovery of Sulfur From Phosphogypsum: Conversion of ...

produce sulfur dioxide, which is converted to sulfuric acid. The U.S. Bureau of Mines has investigated the reductive roasting of gypsum (3), the conversion of calcium sulfide (CaS) to elemental sulfur (4), and sulfur dioxide emission control (5). The latter process involved the reaction of sulfur dioxide and hydrogen sulfide to produce elemental

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The Claus Sulfur Recovery Process — Sulfur Recovery ...

Sulfur recovery refers to the conversion of hydrogen sulfide (H2S) to elemental sulfur. Hydrogen sulfide is a by-product of processing natural gas and refining high-sulfur crude oils. There are many sulfur recovery technologies available for different applications, however the most common conversion method used is the Claus process.

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Direct Conversion to Sulfur and Polishing Treatment SourGas

Mar 13, 2016  Direct conversion to sulfur These processes are generally used for the removal of small quantities of H2S from gas streams (concentration expressed as ppm) and involve the direct conversion of H2S to sulfur. No significant amount of CO2 is removed. They are based on the direct conversion of H2S into sulfur by a iron based

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Sulfur removal Haldor Topsoe

Sulfur removal Sulfurous emissions standards are tightening worldwide, forcing industrial, chemical, refining, and metallurgical operations to compromise profitability to meet legal requirements. Sometimes a crystal-ball approach is needed when dealing with sulfurous emissions.

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US7780933B2 - Method of removing sulfur compounds from ...

All sulfur compounds can be efficiently removed from natural gas that contains hydrogen sulfide and other sulfur compounds such as mercaptan without using physical absorption. The process comprises an absorption step of treating natural gas by means of a chemical absorption method using an amine-containing solution to mainly remove hydrogen sulfide and carbon dioxide, an adsorption step of ...

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Sulfur Removal from Refinery Fuel Gas Paper

Presently, sulfur removal from refinery fuel gas is focused primarily on hydrogen sulfide (H2S). H2S can be effectively absorbed from gas stream with an amine system and converted to elemental sulfur in a Claus plant. However refinery gas streams, especially those derived from cokers, contain other sulfur compounds such as mercaptans ...

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Removal of sulfur contaminants from biogas to enable ...

Dec 18, 2019  Utilization of surplus oxygen from the combined system is proven problem free and allows sulfur removal without introducing contaminants. Provided that a recommended sulfur guard is included, the proposed design is ready for full-scale implementation. ... enabling conversion of the by-product CO 2 to more methane via the Sabatier reaction (Eq. 1).

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Sulfur Recovery Unit (SRU)|CHIYODA CORPORATION

The sulfur recovery rate of the Claus process is about 95 to 97%. The tail gas that contains unrecovered sulfur is fed to the tail gas treating unit (TGT). The recovered sulfur is stored in the sulfur pit and shipped as product after undergoing a degassing process to remove H 2 S. The Claus process is an equilibrium process, and a modified ...

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Claus process - Wikipedia

The Claus process is the most significant gas desulfurizing process, recovering elemental sulfur from gaseous hydrogen sulfide.First patented in 1883 by the chemist Carl Friedrich Claus, the Claus process has become the industry standard.. The multi-step Claus process recovers sulfur from the gaseous hydrogen sulfide found in raw natural gas and from the by-product gases containing hydrogen ...

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Process removes sulfur roadblock to grease to biofuel ...

Feb 02, 2009  Process removes sulfur roadblock to grease to biofuel conversion. BioFuelBox Corp. has announced the removal of a key technical obstacle that has prevented wide-scale conversion of waste greases -- including those collected from sewer systems -- into biodiesel for nationwide on-road applications. Feb 2nd, 2009. Facebook Icon.

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Sulfur Products, Timing, and Rate - AL Great Lakes

Choosing the right rate of sulfur is also important to maximize the benefit of the application. A common practice is to apply a crop removal rate which is approximately 15 lb/acre in a 200 bushel corn crop or 70 bushel soybean crop. However, the total crop uptake is about double the crop removal rate. Soils do release a small amount of sulfur ...

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Microbial sulfide removal Water Tech Online

Mar 24, 2017  Microbial sulfide removal. One design combines three biological processes into a single integrated treatment process. Figure 1. Sulfur transformation by bacteria. All graphics courtesy of Honeywell UOP. The microbial oxidation of reduced sulfur species is a well-studied field. Sulfur oxidation is an ancient metabolic process, and sulfur ...

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ReaxFF simulations of petroleum coke sulfur removal ...

During the pyrolysis simulation, the first-step for S-removal was thiophenic sulfur conversion to C 1–4 S (mostly C 2 S), COS, or CNS. The heteroatom pyrolysis overlapped, for this structure, at these conditions. However, for the combustion simulation earlier conversion of thiophenic sulfur

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Direct Conversion to Sulfur and Polishing Treatment SourGas

Mar 13, 2016  Direct conversion to sulfur. These processes are generally used for the removal of small quantities of H2S from gas streams (concentration expressed as ppm) and involve the direct conversion of H2S to sulfur. No significant amount of CO2 is removed. They are based on the direct conversion of H2S into sulfur by a iron based catalyst.

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New sulfur dioxide conversion method may transform current ...

Oct 28, 2020  According to Wang, current desulfurization methods can successfully remove sulfur dioxide from tail gas streams but not without significant drawbacks. Flue gas desulfurization technologies, for example, are the most used methods to capture sulfur dioxide, but these processes create a large amount of solid waste in the form of metal sulfate that ...

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Sulfur Removal and Recovery - Capone - - Major Reference ...

The removal and recovery of sulfur species is practiced to limit sulfur emissions to the environment and for larger sulfur capacities, to recover a valuable sulfur product. The most common applications are the removal of hydrogen sulfide and sulfur dioxide and subsequent conversion to elemental sulfur. Many processes have been developed for the ...

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Sulfur Recovery Axens

Sub-dewpoint Claus process that improves the overall Sulfur Removal by absorbing liquid elemental sulfur on the catalyst. This technology uses a combination of Axens titanium-based and alumina catalysts, in order to deal with residual COS and CS 2 species and at the same time reach outstanding H 2 S conversion performances.

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Method 19 8/3/2017 - EPA

2.2.1 The sulfur removal efficiency of a fuel pretreatment system is determined by fuel sampling and analysis of the sulfur and heat contents of the fuel before and after the pretreatment system. 2.2.2 The SO 2 removal efficiency of a control device is determined by measuring the SO 2 rates before and after the control device.

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Selective Catalytic Oxidation of Hydrogen Sulfide

capability for continuous removal of sulfur to less than 200 ppb levels. Figure 1 illustrates the differences among the lab-made catalyst and several commercial catalysts tested using a model reformate stream containing 1000 ppm of H2S in 50% H2, 15% CO2, 9% CO, 2% CH4, and 23% H2O. The conversion of H2S and sulfur yield were calculated

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More Economical Sulfur Removal for Fuel Processing Plants

More Economical Sulfur Removal for Fuel Processing Plants . Challenge . Sulfur is naturally present as an impurity in fossil fuels. When the fuels are burned, the sulfur is released as sulfur dioxide—an air pollutant responsible for respiratory problems and acid rain.

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Mercaptan Removal from LPG Natural Gas - PERCO Catalyst

The gas sweetening process requires an addition of a small amount of air (O 2) added to the hydrocarbon upstream of the PERCO® mercaptan removal / conversion treating unit. The air requirement is dependent upon level of Mercaptan sulfur in the stream. The small amount of injected air (O 2) is then consumed over the catalyst bed, and mercaptan ...

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Hydroprocessing: Hydrotreating Hydrocracking

Selective catalysts for sulfur removal without olefin ... Difficult to generalize because conversion of feedstock is relatively low Liquid products generally have volume gravity increase –typically +1oAPI General relationship of hydrogen required vs. sulfur content Naphtha: (scf/bblH2) = 191 (wt% sulfur

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Design Parameters for a Hydro desulfurization (HDS) Unit ...

The most economic catalysts for sulfur removal contain cobalt and molybdenum sulfides (CoMo) on alumina supports. If, however, the removal of nitrogen is a significant ... Increasing space velocity reduces conversion, hydrogen consumption, and coke formation. Although increasing temperature improves sulfur and nitrogen removal, excessive ...

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Sulfur Recovery Catalyst, Claus Catalyst, TGT Catalyst ...

Sulfur Recovery Unit - Claus Catalyst. PSR-1, an alumina based Claus catalyst, Dia.4-6mm, Spheres, Bulk density: 680 – 750KG/m3, which is widely used in sulfur recovery units. PSR-1 provides large specific surface area, large pore volume, high physical strength, lower abrasion, high activity, high-temperature resistance and ageing-resistance.

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ACID GAS TREATMENT AND SULFUR RECOVERY

PEP’94 216 JJLM Abstract Process Economics Report 216 ACID GAS TREATMENT AND SULFUR RECOVERY (October 1997) This report addresses the technology and economics of removing acid gases—H 2 S, CO 2, COS, CS 2, and mercaptans—from gaseous process streams and the subsequent conversion of H 2 S to S for sale or disposal. This topic is especially important now to the process

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Sulfur Recovery BASF Catalysts

Sulfur recovery is an important process for natural gas processing plants and refineries. The raw feed streams often contain gases, such as H 2 S and CO 2.H 2 S is a highly toxic gas and contributes to SO 2 emissions. To comply with environmental regulations, the sulfur species are converted to elemental sulfur and water via sulfur recovery technologies such as Claus Sulfur Recovery Units and ...

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Formation and Control of Sulfur Oxides in Boilers

The sulfur in coal is not present as free sulfur; rather it occurs combined with the coal substance and with min-eral matter. Sulfur combined with the coal substance, termed organic sulfur, cannot be removed by mechanical clean-ing processes. Organic sulfur accounts for 20 to 60% of the total sulfur. In-organic sulfur is present in pyritic and

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