coal beneficiation and organic sulfur removal

  • Coal beneficiation and organic sulfur removal - ScienceDirect

    1996-1-1 · The coal used was obtained from the Illinois State Geological Survey: Ther~ocoupte Ven't Val, ve Pressure Tronsducer Figure 1 Autoclave assembly 26 Fuel 1996 Volume 75 Number 1 Coal beneficiation and organic sulfur removaL" S. Meffe et al. an Illinois Basin coal, IBC-101, with 4.3 wt% total sulfur and 3.0 wt% organic sulfur (both db).

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  • (PDF) Coal beneficiation and organic sulfur removal | A ...

    Coal beneficiation and organic sulfur removal. Download. Coal beneficiation and organic sulfur removal. A. Perkson. Olev Trass. A. Perkson. Olev Trass. Related Papers. Investigation of agglomeration rates of two Turkish lignites. By Mehmet Yalçin. Coal Science. By kapalo kombed. Pyrite recovery mechanisms in coal flotation.

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  • 10.1016/0016-2361(95)00171-9 | 10.1016/0016 ... -

    2020-6-11 · Assuming 45% removal of pyritic sulfur, organic sulfur removal would be 52 %; if all pyrite were converted to troilite, for 50% S removal, organic sulfur removal would also be 50%. Furthermore, it was shown for the 5min experiment that the pyritic sulfur liberated upstream was reincorporated as organic sulfur downstream, in sections 5 and 6.

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  • (PDF) SULFUR REMOVAL FROM COAL BENEFICIATION

    2022-1-27 · The results of experimentation show that the KOH concentration is the most critical factor in the removal of sulfur from low-grade coal as it has the

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  • Beneficiation of coal using supercritical water and carbon ...

    2020-5-29 · Table 1 Current sulfur removal technologies for coal beneficiation Previous studies Extraction method Coal (g) Water (g) Temperature ( C) Sulphur removal (total %) Uslu and Atalay (2004) Magnetic physical – – MW heating 55% of pyritic El-Midany and Abdel-Khalek (2014) Bascillus subtilis 0.1 100 25 72% Mketo et al. (2016) 3 M HNO 3–H 2O 2 ...

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  • How to Remove Sulphur from Coal

    2017-9-1 · Reducing the inorganic sulfur in coal to tolerable limits by physical beneficiation, including flotation, as now practiced, still is relatively inefficient and has not kept pace with the more sophisticated physical beneficiation approaches employed by the nonfuel minerals industry in

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  • Beneficiation of coal using supercritical water and carbon ...

    2020-4-30 · The coal beneficiation is demonstrated in 200–400 °C range at 143 bar using a semi-continuous process without needing any mineral acid or organic solvents by studying the sulfur removal. Carbon dioxide extraction at 350 °C is effective similar to the typical hydrothermal extraction which was most effective at 290 °C.

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  • The microbial desulfurization of coal

    Inorganic sulfur consists mostly of iron sulfides, the so-called "pyritic sulfur," whereas organic sulfur is covalently bound to the carbon atoms of the coal macromolecule. Comminution of coal to sizes that liberate the iron sulfide grains makes their removal with mineral beneficiation processes theoretically possible, but practically profitless.

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  • Coal Beneficiation - an overview | ScienceDirect Topics

    Joan S. Esterle, in Applied Coal Petrology, 2008 3.7.2 Mineral and Trace Element Partitioning. As noted, one of the fundamental reasons for coal beneficiation is the reduction of ash yield and deleterious minerals and elements with an inorganic affinity. The partitioning of major, minor, and trace elements depends on the degree of liberation of the minerals, their inorganic versus

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  • Beneficiation of Coal from Impounded Coal Waste |

    1997-4-1 · Mineral and sulfur removal from the recovered coal was negligible. Further treatment with TCLP solvents in the second stage showed significant removal from the recovered coal (over 70%) of iron, manganese, and sodium. Sulfur and calcium removal was poor (less than 50%); it is likely that these are bound in the organic matrix.

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  • An effective method to remove organic sulfur in coal ...

    2021-11-15 · The present work investigated an effective method to remove organic sulfur in coal utilizing different microorganisms (Nocardia mangyaensis and Pseudomonas putida).The most obvious finding to emerge from the sulfur forms analysis is that the organic sulfur removal of these two bacterial strains on Yunnan bumuga high-sulfur coal were 61.58% and 54.19%, respectively.

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  • How to Remove Sulphur from Coal

    2017-9-1 · Reducing the inorganic sulfur in coal to tolerable limits by physical beneficiation, including flotation, as now practiced, still is relatively inefficient and has not kept pace with the more sophisticated physical beneficiation

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  • Optimization of Coal Beneficiation Plans for SO2

    2018-6-4 · Organic sulfur, which forms an integral part of the coal matrix, and may comprise 30—70 percent of the total sulfur content, can be removed only by chemical processing. This paper describes a newly developed analytical model of conventional coal cleaning plants, designed to estimate the cost and capability of coal cleaning for removing sulfur ...

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  • CiteSeerX — SULFUR REMOVAL FROM COAL

    CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): During beneficiation of coal at the coal mining area of Tula, Russia, huge amounts of coal wastes are produced with a high residual pyrite content. These wastes which are usually disposed of without specific care in the environment are considered as active sources of acidic water generation

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  • Removal of Organic Sulfur from Coal by Wheat Straw

    2021-7-9 · Removal of Organic Sulfur from Coal by Wheat Straw Ash and Potassium Ferric Hexacyanoferrat (II) Ayhan Demirbas ,1 and Selami Karslioglu 2 1Department of Chemical Engineering, Selcuk University, Campus, 42031 Konya, Turkey 2Department of Chemistry, Karadeniz Technical University, Trabzon, Turkey ABSTRACT This study is an attempt to

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  • Beneficiation of Coal from Impounded Coal Waste |

    1997-4-1 · Mineral and sulfur removal from the recovered coal was negligible. Further treatment with TCLP solvents in the second stage showed significant removal from the recovered coal (over 70%) of iron, manganese, and sodium. Sulfur and calcium removal was poor (less than 50%); it is likely that these are bound in the organic matrix.

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  • Sulfur Oxides: Pollution Prevention and Control

    to the coal. Coal beneficiation can remove 50% of pyritic sulfur and 20–30% of total sulfur. (It is not effective in removing organic sulfur.) Beneficiation also removes ash responsible for particulate emissions. This approach may in some cases be cost-effective in controlling emissions of sulfur oxides, but it may generate large quanti-

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  • Mössbauer study of the inorganic sulfur removal from

    2013-12-9 · Mössbauer study of the inorganic sulfur removal from coals Fig. 1 SEM images of a general view of beneficiated coal product (left side) and precipitated coal product (right side) by hydrocyclonic separation process.In the circles were identified clusters of grains of pyrite Fig. 2 EDX spectra associated with the grains of pyrite (FeS2)identified in the Fig. 1

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  • Desulfurization of Coal - EOLSS

    2017-1-16 · 3. Coal Cleaning for Sulfur Removal The coal cleaning process has traditionally focused on reducing ash-reforming minerals and not necessarily aimed at removing sulfur in coal until recently. However, increasingly stringent regulations for SOx emissions during coal combustion have encouraged technical development of coal cleaning for sulfur ...

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  • Synergistic Removal Effects of Ultralow Emission Air ...

    2022-2-21 · Burning coal with a higher sulfur content can improve the synergistic removal of Pb, and working under a low boiler load is beneficial to the synergistic removal of As, Se, and Pb by APCDs of power plants. Hopefully, this study can provide a reference for the removal of TEs under various operating conditions in power plants with different APCDs.

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  • An effective method to remove organic sulfur in coal ...

    2021-11-15 · The present work investigated an effective method to remove organic sulfur in coal utilizing different microorganisms (Nocardia mangyaensis and Pseudomonas putida).The most obvious finding to emerge from the sulfur forms analysis is that the organic sulfur removal of these two bacterial strains on Yunnan bumuga high-sulfur coal were 61.58% and 54.19%, respectively.

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  • Removal of Organic Sulfur from Coal by Wheat Straw

    2021-7-9 · Removal of Organic Sulfur from Coal by Wheat Straw Ash and Potassium Ferric Hexacyanoferrat (II) Ayhan Demirbas ,1 and Selami Karslioglu 2 1Department of Chemical Engineering, Selcuk University, Campus, 42031 Konya, Turkey 2Department of Chemistry, Karadeniz Technical University, Trabzon, Turkey ABSTRACT This study is an attempt to

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  • ORGANIC SULFUR AND HAP REMOVAL FROM COAL

    2009-3-25 · Despite numerous attempts to remove sulfur from coal for low-sulfur, clean coal combustion applications, physical methods (e.g., selective agglomeration, flotation, or magnetic separation) have enjoyed some success for pyritic sulfur removal. Similar physical separation methods are ineffective for organic sulfur and organically bound HAP removal

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  • Organic sulfur removal from coal by microorganisms from ...

    1993-7-1 · Thermophilic mixed cultures were identified that removed 90% of pyritic and sulfate sulfur and 33% of the organic sulfur from North Dakota lignite. The 30–40% organic desulfurization barrier was studied for possible inhibitors to organic sulfur removal from coal.

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  • Beneficiation of Coal from Impounded Coal Waste |

    1997-4-1 · Mineral and sulfur removal from the recovered coal was negligible. Further treatment with TCLP solvents in the second stage showed significant removal from the recovered coal (over 70%) of iron, manganese, and sodium. Sulfur and calcium removal was poor (less than 50%); it is likely that these are bound in the organic matrix.

    Charlar en Línea
  • Sulfur Oxides: Pollution Prevention and Control

    to the coal. Coal beneficiation can remove 50% of pyritic sulfur and 20–30% of total sulfur. (It is not effective in removing organic sulfur.) Beneficiation also removes ash responsible for particulate emissions. This approach may in some cases be cost-effective in controlling emissions of sulfur oxides, but it may generate large quanti-

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  • SELECTIVE REMOVAL OF ORGANIC SULFUR FROM COAL

    2018-6-15 · Desulfurization of coal involves the removal of both the inorganic and organic forms of sulfur. Several physical methods are available for the removal of inorganic sulfur which is normally represented by pyritic and sulfatic sulfur. Removal of organic sulfur requires the use of chemical cleaning methods.

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  • SULPHUR REMOVAL FROM COAL OR FROM PRODUCTS:

    2021-3-26 · This thesis investigates the origin of sulphur in the coal, the distribution of the species and the potential for removal of sulphur from the coal before the sulphur can reach the gasifiers. The coal beneficiation option is compared to two chemical processes, which capture the sulphur compounds after they are produced in the gasifiers. Several sub-

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  • Experimental Study on Organic Sulfur Removal in ...

    2020-8-25 · In order to improve the total sulfur removal rate in coal combustion, an acidic ionic liquid (IL) 1-carboxymethyl-3-methylimidazolium hydrogen sulfate ([HOOCCH 2 mim][HSO 4]) as the extractant combined with the oxidant 30% hydrogen peroxide (H 2 O 2) was applied to reduce the total sulfur content, and its microscopic mechanism of desulfurization was analyzed.

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  • Desulfurization of Coal - EOLSS

    2017-1-16 · 3. Coal Cleaning for Sulfur Removal The coal cleaning process has traditionally focused on reducing ash-reforming minerals and not necessarily aimed at removing sulfur in coal until recently. However, increasingly stringent regulations for SOx emissions during coal combustion have encouraged technical development of coal cleaning for sulfur ...

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