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desulfurization and sulfur processing

Trail of sulfur during the desulfurization via reactive

2021-8-1  The phase transition during desulfurization process on Ni/ZnO was studied by in-situ XRD and STEM-EDS technology, in order to acquire direct evidence of S-transfer phenomenon between Ni and ZnO. As a result, a comprehensive overview of RADS mechanism, initiating with hydrogenative desulfurization followed by sulfur absorption and transfer, was

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Desulfurization an overview ScienceDirect Topics

Desulfurization. Sulfur removal can be carried out before the reformer, after the reformer, or in both locations and can be integrated in a compact fuel system in many different ways depending on the sulfur tolerance of the reforming catalysts and fuel cells. From: Fuel Cells: Technologies for Fuel Processing, 2011. Related terms: Natural Gas

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Desulfurization of high sulfur fine coal using a novel

2019-10-15  The throughput of high-ash and high-sulfur fine-grain coal (0–6 mm) increases year by year.The serious problem of direct combustion is the formation of acid rain and smog.Therefore, the pre-combustion desulfurization and ash reduction can reduce environmental pollution. A combined process of dry separation and microwave desulfurization for the cleaning of the 0–6 mm fine coal was applied.

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Desulfurization Process of High-Sulfur Coal by Full

The coal sample from the Shijiazhai mine located in the east of Yunnan province of China, is characterized with high ash and sulfur content which are 64.90% and 8.66% respectively. Analysis results indicate that coal and pyrite are the valuable minerals that can be recycled from the crude ore. According to the properties of the ore, a full-flotation flowsheet is proposed to process the ore.

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Effect of pre-desulfurization process on the sulfur forms

2020-9-1  Abstract To achieve the utilization of high sulfur coals efficiently and economically, the effects of different pre-desulfurization processes including flotation, acid washing, ultrasonication and stepwise treatment on sulfur removal and changes of sulfur

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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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Metal and sulfur removal from petroleum oil using a novel

2020-12-1  The optimum process conditions measured for metals and sulfur removal were 250 °C, with a residence time of 1 h, stirring at 700 rpm, and a DM-DSA concentration of 2 vol%. A classical heating technique was used during the demetallization-desulfurization process for

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Review on desulfurization in electroslag remelting

2021-1-18  In this paper, the advances in desulfurization practices of ESR are reviewed. The effects of processing parameters, including the initial sulfur level of consumable electrode, remelting atmosphere, deoxidation schemes of ESR, slag composition, melting rate, and electrical parameters on the desulfurization in ESR are assessed.

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Sulfur management of coal processing complexes (Journal

2021-9-29  Cumare, F E, Meissner, III, R E, and Hamlin, J B. 1984. "Sulfur management of coal processing complexes". United States. Mulled coal a beneficiated coal form for use as a fuel or fuel intermediate. Technical progress report No. 11, October 1, 1992--December 31, 1992.

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Towards simultaneously removing nitrogen and sulfur by a

2016-8-1  A novel AADD process was developed for simultaneous nitrogen and sulfur removal. • The highest NRR and SRR were 4.00 kgN m −3 d −1 and 2.39 kgS m −3 d −1, respectively.. Influent NH 4 +-N:NO 2 −-N:S 2−-S of 1.74:2.20:1 was suitable for stable operation.. Brocadiaceae and Hydrogenophilaceae are key members in the system.

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Desulfurization Process of High-Sulfur Coal by Full

The coal sample from the Shijiazhai mine located in the east of Yunnan province of China, is characterized with high ash and sulfur content which are 64.90% and 8.66% respectively. Analysis results indicate that coal and pyrite are the valuable minerals that can be recycled from the crude ore. According to the properties of the ore, a full-flotation flowsheet is proposed to process the ore.

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Hot-Gas Desulfurization with Sulfur Recovery (Conference

1997-7-1  @article{osti_16485, title = {Hot-Gas Desulfurization with Sulfur Recovery}, author = {Portzer, Jeffrey W and Damle, Ashok S and Gangwal, Santosh K}, abstractNote = {The objective of this study is to develop a second generation HGD process that regenerates the sulfided sorbent directly to elemental sulfur using SO{sub 2}, with minimal consumption of coal gas.

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Effect of pre-desulfurization process on the sulfur forms

2020-9-1  Abstract To achieve the utilization of high sulfur coals efficiently and economically, the effects of different pre-desulfurization processes including flotation, acid washing, ultrasonication and stepwise treatment on sulfur removal and changes of sulfur

get price

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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Effect of Basicity on the Sulfur Precipitation and

Kambara Reactor (KR) desulfurization slag used as slag-making material for converter smelting can promote early slag melting in the initial stage and improve the efficiency of dephosphorization. However, its direct utilization as a slagging material can increase the sulfur content in molten steel since KR desulfurization slag contains 1~2.5% sulfur.

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Thermal and chemical desulfurization of low sulfur coals

This paper describes desulfurization characteristics of low sulfur coals prior to combustion and optimum conditions of three different desulfurization processes. These processes include two thermal treatment processes (mild pyrolysis and air oxidation) and an H2O2 leaching process. Dual processes composed of thermal and leaching processes were also evaluated. Low sulfur coals employed were two

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Review on desulfurization in electroslag remelting

2021-1-18  In this paper, the advances in desulfurization practices of ESR are reviewed. The effects of processing parameters, including the initial sulfur level of consumable electrode, remelting atmosphere, deoxidation schemes of ESR, slag composition, melting rate, and electrical parameters on the desulfurization in ESR are assessed.

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An overview of new approaches to deep desulfurization

2021-6-23  Desulfurization research should also take into consideration of the fuel-cell fuel processing needs, which will have a more stringent requirement on desulfurization (e.g., <1ppm sulfur) than IC engines. The society at large is stepping on the road to zero sulfur fuel, so researchers should begin with the end in mind and try to

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hpf法脱硫(Desulfurization by HPF process).doc

2017-9-5  measures. 9 of the sulfur yield and quality HPF ammonia desulfurization process of sulfur yield was 50% ~ 60%, and the yield of ADA is basically the same, sulfur The average purity of 96.40% sulfonylurea. 10. waste Calculated from the mass balance

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Sulfur management of coal processing complexes (Journal

2021-9-29  Cumare, F E, Meissner, III, R E, and Hamlin, J B. 1984. "Sulfur management of coal processing complexes". United States. Mulled coal a beneficiated coal form for use as a fuel or fuel intermediate. Technical progress report No. 11, October 1, 1992--December 31, 1992.

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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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Effect of pre-desulfurization process on the sulfur forms

2020-9-15  To achieve the utilization of high sulfur coals efficiently and economically, the effects of different pre-desulfurization processes including flotation, acid washing, ultrasonication and stepwise treatment on sulfur removal and changes of sulfur forms in a high sulfur coal, sulfur transformation behavior during pyrolysis and sulfur distribution in char were investigated.

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Trail of sulfur during the desulfurization via reactive

2021-8-1  The phase transition during desulfurization process on Ni/ZnO was studied by in-situ XRD and STEM-EDS technology, in order to acquire direct evidence of S-transfer phenomenon between Ni and ZnO. As a result, a comprehensive overview of RADS mechanism, initiating with hydrogenative desulfurization followed by sulfur absorption and transfer, was

get price

Desulfurization of high sulfur fine coal using a novel

2019-10-15  The throughput of high-ash and high-sulfur fine-grain coal (0–6 mm) increases year by year.The serious problem of direct combustion is the formation of acid rain and smog.Therefore, the pre-combustion desulfurization and ash reduction can reduce environmental pollution. A combined process of dry separation and microwave desulfurization for the cleaning of the 0–6 mm fine coal was applied.

get price

Desulfurization an overview ScienceDirect Topics

Desulfurization. Sulfur removal can be carried out before the reformer, after the reformer, or in both locations and can be integrated in a compact fuel system in many different ways depending on the sulfur tolerance of the reforming catalysts and fuel cells. From: Fuel Cells: Technologies for Fuel Processing, 2011. Related terms: Natural Gas

get price

Effect of pre-desulfurization process on the sulfur forms

2020-9-1  Abstract To achieve the utilization of high sulfur coals efficiently and economically, the effects of different pre-desulfurization processes including flotation, acid washing, ultrasonication and stepwise treatment on sulfur removal and changes of sulfur

get price

Hydrodesulfurization an overview ScienceDirect Topics

Joongmyeon Bae, in Solid Oxide Fuel Cell Lifetime and Reliability, 2017. Catalysts for Desulfurization. HDS process is one of the ways to remove sulfur compounds inside the hydrocarbon fuels. Molybdenum and tungsten with nickel or cobalt promoters were discovered as HDS catalysts in the 1920s and the 1930s in Germany [40].The HDS catalysts are heterogeneous materials that are commonly referred

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Review on desulfurization in electroslag remelting

2021-1-18  In this paper, the advances in desulfurization practices of ESR are reviewed. The effects of processing parameters, including the initial sulfur level of consumable electrode, remelting atmosphere, deoxidation schemes of ESR, slag composition, melting rate, and electrical parameters on the desulfurization in ESR are assessed.

get price

hpf法脱硫(Desulfurization by HPF process).doc

2017-9-5  2017-9-5  measures. 9 of the sulfur yield and quality HPF ammonia desulfurization process of sulfur yield was 50% ~ 60%, and the yield of ADA is basically the same, sulfur The average purity of 96.40% sulfonylurea. 10. waste Calculated from the mass balance

get price

Towards simultaneously removing nitrogen and sulfur by a

2016-8-1  A novel AADD process was developed for simultaneous nitrogen and sulfur removal. • The highest NRR and SRR were 4.00 kgN m −3 d −1 and 2.39 kgS m −3 d −1, respectively.. Influent NH 4 +-N:NO 2 −-N:S 2−-S of 1.74:2.20:1 was suitable for stable operation.. Brocadiaceae and Hydrogenophilaceae are key members in the system.

get price

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