desulfurization and sulfur processing

Insights to the oxidative desulfurization process of ...

2020-8-12  Among the desulfurization processes, the oxidative desulfurization (ODS) process is a promising method to achieve very low and near-zero sulfur content of the fuel. In this process, sulfur compounds are converted to the corresponding sulfone by a catalyst and in the presence of an oxidant. The obtained compounds by polar solvents or adsorbents ...

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Effects of sulfur fumigation and heating desulfurization ...

Sulfur fumigation and heating desulfurization are used together in the post-harvest processing of many medicinal herbs. However, little is known about the effects of sulfur fumigation on saccharide components, nor about the effects of heating desulfurization on all herbal constituents. In this study

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Desulfurization from Gas Oil - OilGas Portal

2018-7-24  The removal of organo-sulfur compounds (ORS) from diesel fuel is the key to reduce air pollution, reducing the emission of toxic gases (such as sulfur oxides) and other polluted materials. The adsorption desulfurization process is one of the easily and fast method to remove sulfur from diesel oils2.

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Desulfurization of Coal - EOLSS

2017-1-16  Sulfur in coal exists in inorganic and organic forms, the former being mostly pyritic sulfur. Total sulfur contents in major coalfields are in the range of roughly 0.5–10 wt%. In coal combustion, to generate electric power and process heat, the sulfur is emitted as SO2, which is seen as one of the main causes of acid rain. This effect has led ...

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Desulfurization of heavy oil SpringerLink

2012-3-1  Desulfurization is usually discussed in terms of sulfur removal from lighter refinery cuts, such as naphtha, distillate, and light vacuum gas oil fractions. The purpose of the present review paper is to provide an overview of the different conversion

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Economics and Alternatives for Sulfur Removal from

2017-6-8  treatment, and the net desulfurization efficiencies achieved by each process. Detailed esti-mates of capital and operating costs for desulfurization are considered, and equipment needs for environmental control requirements are discussed. Despite the long held reputation of coke oven gas (COG) as a "clean" fuel, enactment of stringent ambient air

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Desulfurization of heavy oil - Springer

2017-8-25  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 carbon and hydrogen. The average sulfur content varies from 0.03 to 7.89 mass% in crude oil (Mehran et al. 2007).

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Environmental desulfurization of mine wastes using

Environmental desulfurization using non-selective flotation has recently been implemented as an integrated management approach for mine tailings. Furthermore, physical separation techniques, commonly used in mineral processing and offering a remarkable potential for sulfur and valuable minerals enrichment, are rarely used to manage mine wastes.

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Ultrasound-assisted extractive/oxidative desulfurization ...

In the ultrasound-assisted extractive/oxidative desulfurization (UEODS) process, a liquid–liquid catalytic oxidative desulfurization system containing MO/base oil, hydrogen peroxide, and PIL was observed at 30 °C and maximum sulfur removal of 98.67% was obtained. After completion of the reaction, PIL was separated from MO.

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Conceptual approach for simultaneous targeting and

2021-11-1  1. Introduction. The global crude slate sulfur level was expected to increase from around 1.35% in the 2020–2025 period to 1.5% by 2035 (), which means crude oil will be produced containing more sulfur.On the contrary, the environmental regulations have continuously lowered the sulfur content in fuel oils ().Hydrofining and processing sour oil lead to notable hydrogen sulfide in ...

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Oxidative Desulfurization of Heavy Oils with High Sulfur ...

The demand for clean fuels is increasing throughout the world, with more stringent environmental regulations for transportation fuels including marine fuels, particularly regarding their sulfur content. Moreover, the quality of crude oil and derived petroleum cuts is getting lower while fossil fuels are still in high demand. Heavy oils are characterized by high sulfur content where most sulfur ...

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Classification of desulfurization processes base on the ...

Catalytic conversion of sulfur compounds and subsequent removal of sulfur is a well-established desulfurization process. Such processes are hydroprocessing, distillation, extraction, adsorption ...

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Classification of desulfurization processes base on the ...

Catalytic conversion of sulfur compounds and subsequent removal of sulfur is a well-established desulfurization process. Such processes are hydroprocessing, distillation, extraction, adsorption ...

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A study of the desulfurization selectivity of a reductive ...

Therefore, this desulfurization process can be used for fuels with a sulfur content of approximately 500 ppm, and the subsequent experiment used only simulated fuel with a 500 ppm sulfur content ...

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Effects of sulfur fumigation and heating desulfurization ...

Sulfur fumigation and heating desulfurization are used together in the post-harvest processing of many medicinal herbs. However, little is known about the effects of sulfur fumigation on saccharide components, nor about the effects of heating desulfurization on all herbal constituents. In this study

More

Desulfurization of Hydrocarbons - SpinTek

SpinTek, Inc. has developed a non-oxidized desulfurization process that is efficient and cost effective for removal of middle distillate sulfur hydrocarbons. The technology uses a cyclic process of an adsorbent to adsorb and desorb. After the adsorbent is fully loaded with sulfur compounds, the adsorbent bed is regenerated by using a simple ...

More

Desulfurization of Coal - EOLSS

2017-1-16  Sulfur in coal exists in inorganic and organic forms, the former being mostly pyritic sulfur. Total sulfur contents in major coalfields are in the range of roughly 0.5–10 wt%. In coal combustion, to generate electric power and process heat, the sulfur is emitted as SO2, which is seen as one of the main causes of acid rain. This effect has led ...

More

Economics and Alternatives for Sulfur Removal from

2017-6-8  treatment, and the net desulfurization efficiencies achieved by each process. Detailed esti-mates of capital and operating costs for desulfurization are considered, and equipment needs for environmental control requirements are discussed. Despite the long held reputation of coke oven gas (COG) as a "clean" fuel, enactment of stringent ambient air

More

Advanced Desulfurization Technologies and Mechanisms ...

‎Several sulfur-based compounds are available in refined products ‎ or petroleum. Examples are listed in Figure 3. Desulfurization is a chemical process for the removal of sulfur from petroleum. It involves the removal of sulfur from a molecule and/or the

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Desulfurization Process, Dephosphorization, and

Desulfurization Process, Dephosphorization, and Secondary Refining Performance of Tecnosulfur Products The search for efficiency in the desulfurization process (reduction in the sulfur content) of pig iron led to new procedures and equipment innovations, which significantly increased the final quality of steel and reduced the consumption of ...

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Deep desulfurization performance of thiophene with deep ...

2021-4-21  As a result, during the desulfurization process, the hydrogen bond formed between the active hydrogen of ChCl/p-TsOH and the sulfur atom of Th has a higher desulfurization rate. It can be concluded from figure 13 b that at 2360 cm −1 , after DES, CNT and DES/CNT desulfurization, there are obvious peaks, and the peak intensity of DES/CNT is ...

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Oxidative Desulfurization of Heavy Oils with High Sulfur ...

The demand for clean fuels is increasing throughout the world, with more stringent environmental regulations for transportation fuels including marine fuels, particularly regarding their sulfur content. Moreover, the quality of crude oil and derived petroleum cuts is getting lower while fossil fuels are still in high demand. Heavy oils are characterized by high sulfur content where most sulfur ...

More

A current overview of the oxidative desulfurization of ...

The ceaseless increase of pollution cases due to the tremendous consumption of fossil fuels has steered the world towards an environmental crisis and necessitated urgency to curtail noxious sulfur oxide emissions. Since the world is moving toward green

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Status and Problems of Regenerable Flue Gas ...

2018-6-8  reduce the SO2 generated from any FGD process regenerator. The AI-CIP process converts sodium sulfites and sulfates to sodium carbonate and produces sulfur. The Shell SFGD process requires both hydrogen and hydrogen sulfide for a complete system.8 However, if a source of hydrogen is avail-able, the hydrogen can be reacted with the product S to gen-

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Processes Free Full-Text Effective Desulfurization and ...

Major desulfurization methods of high-sulfur bauxite are floatation desulphurization, roasting desulphurization, and desulphurization in the digestion process. In the flotation desulfurization process, raw materials need to be ultra-finely ground, and then sulfonate traps are used to collect pyrite by inhibiting water seepage, which is very ...

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Research progress of flue gas desulfurization and ...

2020-10-16  Faced with the serious impact of sulfur dioxide pollution, and increasingly stringent national emission requirements. More than 200 flue gas desulfurization technologies have been developed in various countries in the world, but only a dozen can be applied to the actual desulfurization process [1].

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(PDF) Desulfurization and demineralization of high sulfur ...

The desulfurization and demineralization using flotation and leaching process ha ve effectively. reduced the ash and sulfur content by approximately 68 % and 66 %, respectively. These findings ...

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Desulfurization of Coal - EOLSS

2017-1-16  Sulfur in coal exists in inorganic and organic forms, the former being mostly pyritic sulfur. Total sulfur contents in major coalfields are in the range of roughly 0.5–10 wt%. In coal combustion, to generate electric power and process heat, the sulfur is emitted as SO2, which is seen as one of the main causes of acid rain. This effect has led ...

More

A study of the desulfurization selectivity of a reductive ...

Therefore, this desulfurization process can be used for fuels with a sulfur content of approximately 500 ppm, and the subsequent experiment used only simulated fuel with a 500 ppm sulfur content ...

More

Desulfurization Process, Dephosphorization, and

Desulfurization Process, Dephosphorization, and Secondary Refining Performance of Tecnosulfur Products The search for efficiency in the desulfurization process (reduction in the sulfur content) of pig iron led to new procedures and equipment innovations, which significantly increased the final quality of steel and reduced the consumption of ...

More

Desulfurization of Hydrocarbons - SpinTek

SpinTek, Inc. has developed a non-oxidized desulfurization process that is efficient and cost effective for removal of middle distillate sulfur hydrocarbons. The technology uses a cyclic process of an adsorbent to adsorb and desorb. After the adsorbent is fully loaded with sulfur compounds, the adsorbent bed is regenerated by using a simple ...

More

A current overview of the oxidative desulfurization of ...

The ceaseless increase of pollution cases due to the tremendous consumption of fossil fuels has steered the world towards an environmental crisis and necessitated urgency to curtail noxious sulfur oxide emissions. Since the world is moving toward green

More

Deep desulfurization performance of thiophene with deep ...

2021-4-21  As a result, during the desulfurization process, the hydrogen bond formed between the active hydrogen of ChCl/p-TsOH and the sulfur atom of Th has a higher desulfurization rate. It can be concluded from figure 13 b that at 2360 cm −1 , after DES, CNT and DES/CNT desulfurization, there are obvious peaks, and the peak intensity of DES/CNT is ...

More

Adsorptive Desulfurization of Organic Sulfur from Model ...

Mn (II)/AC adsorbents were prepared by ultrasonic impregnation. The 2 wt. % Mn/AC showed best adsorptive performance, and the optimal adsorption temperature was 313 K. Benzene, methylbenzene, and naphthalene were used to explore the adsorptive selectivity of Mn/AC, indicating that Mn could enhance the adsorptive capacity but could not improve the adsorptive selectivity.

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Evolution of defect formation during atomically precise ...

2021-7-23  We observed the evolution of defect formation during the desulfurization process, especially, one-atom-thick removal of sulfur atoms in three-atom-thick monolayer MoS 2.

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Coal Flue Gas Desulfurization - Red Meters

Coal Flue Gas Desulfurization. Desulfurization is an important part of coal processing which keeps excessive amounts of sulfur dioxide from being emitted into the atmosphere, which could lead to acid rain. A Red Meter Toro can make this process more efficient and accurate. + Video. + Details.

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