reducing sulfur in lignite coal

Organic Sulfur Reduction on Lignite Coal Using Multistage

This study focuses on the biodesulfurization of lignite specifically the reduction of organic sulfur, namely aliphatic mercaptans/thiols via bioprocess methods. The process was conducted by using multistage artificial biotreatment (A-Bmt) and Pseudoclavibacter sp. SKC/XLW-1 strains as biocatalysts. The aims are to improve the recovery of clean coal by reducing the organic sulfur both in

Process for reducing sulfur contaminant emissions from

Process for reducing sulfur contaminant emissions from burning coal or lignite that contains sulfur

Reducing sulfur and ash from coal using Bacillus subtilis

2014-1-1 · Bioflotation is one of the promising techniques for coal ash and sulfur removal. • Coal- B. Subtilis and coal-P. Polymyxa interactions were investigated. B. Subtilis has a higher affinity than P. Polymyxa to coal surface.. A noticeable reduction in both coal ash and sulfur was achieved using B.

Removal of Sulphur from Sorgun Yozgat Lignite Coal with

2016-10-22 · Coal desulfurization prior to usage is a pre-processing in order to achieve clean fuel and reduce environmental impacts such as acid rain. The main purpose of this study is desulfurization of lignite...

Reduction of Sulfur Dioxide Emissions by Burning Coal

2016-1-11 · This study included two high- and medium-sulfur bituminous coals, two low-sulfur lignite coals, and a sub-bituminous coal. Results showed that bituminous coals burning under substoichiometric (fuel-lean) conditions release most of their sulfur content in the form of SO 2 gases, whereas low-ranked coals only partly release their sulfur as SO 2 .

New process removes sulfur from coal before burning

1990-12-1 · Abstract. This paper reports on technology to eliminate sulfur dioxide emissions generated by burning coal stepped to the front of the line. A desulfurization process removes sulfur from coal before it is burned, eliminating or minimizing sulfur dioxide emissions, an acid rain precursor.

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

How to Remove Sulphur from Coal 911 Metallurgist

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

Distribution of sulfur in power supply lignite from North

2020-1-11 · different sulfur types in power supply lignite from opencast mines of Visonta and Bükkábrány. Sulfur compounds in coal It is generally known that sulfur in coal is derived partly from original plant material and partly from ambient fluids in the coal-forming environment. The total ratio of sulfur in coal varies in the range of 0.2 to 10%

Release of Sulfur and Nitrogen during Co-pyrolysis of

2020-11-24 · biomass enhances desulfurization of coal due to the hydrogen donor property of biomass, which allows the easy release of sulfur in the form of H 2 S. 48,49 Cordero et al.50 co-pyrolyzed high-sulfur coal and four biomass residues and Blesa et al.51 co-processed coal and biomass to observe the enhanced desulfurization in the pyrolysis gas.

Process for preparing sulfur-containing coal or lignite

I claim: 1. In a method of treating sulfur-containing coal or lignite to reduce SO 2 emissions during combustion thereof via admixing pulverized sulfur containing coal or lignite with an inorganic material selected from the group consisting of an oxide, hydroxide or carbonate of sodium, potassium, calcium or barium and dolomite in order to increase the SO 2 absorbency of said treated coal or

Reducing sulfur content in flue gases produced by coal

A process for reducing the sulfur oxide content of flue gases produced by combustion of sulfur-containing coal containing cations of alkali metals, alkaline earth metals, or both, in ion exchangeable form. Flue gases containing sulfur oxides are recycled to contact coal awaiting combustion. Sulfur oxides are adsorbed on the coal during the contact step, react with alkali metal and alkaline

Bioelimination of sulfur from high-sulfur coal by selected

In this study, low-rank lignite coal sample collected from Lenger coal deposit (Turkestan province) in Kazakhstan was subjected to desulfurization by using three bacterial strains isolated from soil with silt and coal itself. The molecular identification of the 16S rRNA gene revealed that the isolated bacteria were Atlantibacter sp., Pseudomonas sp., Bacillus sp. denoted as S1, S2, and T1

Process for reducing sulphur dioxide emission from burning

This invention discloses a process for reducing sulphur dioxide emission from burning coal containing sulphur. In the disclosed process, pulverized combustible materials, such as coal, wood flour, combustible plant, charcoal, etc., and a sulphur trapping agent composition are mixed homogeneously to form an admixture which is ground to powder with dimension from about 30 mesh to about 60 mesh.

Treatment of acid lignite mine flooding water by means of

The removal of heavy metals was close to 100%, the pH of the acidic water increased from 3.0 to 6.9. The sulfate-reducing rate again reached 134 mg SO4(2-)/(1 h). The production of sulfur from the excess sulfide is possible. PMID: 11220185 [Indexed for MEDLINE] Publication Types: Research Support, Non-U.S. Gov't; MeSH terms. Coal Mining*

NACoal | Reducing Emissions and Coal Moisture

Currently, moisture removal rates push 11% and sulfur removal runs around 9.5%. DryFined coal has many benefits, including reduced total mass through the boiler, with the corresponding reduction in erosion-related maintenance issues. NoDak’s dried coal has a heating value around 7,000 BTUs, compared with the feed level of 6,200.

Gasification of lignite coal in North America

2018-4-17 · 5/31/2012 3 Molecular and physical structure high moisture content low heating value dissimilar contents and forms of oxygen Sulfur and nitrogen higher porosity and surface area higher reactivity in oxidizing and reducing atmospheres high gas and low tar yields in pyrolysis distinctive (alkaline) inorganic forms and mineral

Molecular Characterization of Soluble Components in the

2020-7-31 · A lignite was subjected to sequential solvent extraction via continuously reducing particle size from around 20 to more than 200 mesh. Five sets of n-hexane and methanol extracts from the particles were characterized by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI FT-ICR MS) and gas chromatography–mass spectrometry. The total extract yield

Upgrading of high moisture content lignite | SpringerLink

Removal of inherent moisture from run-of-mine lignite was tested by lock-feeding the lignite, which was previously sized by screening into 25 kg autoclaves. High pressure, up to 4.053 MPa (588 psi), saturated steam was then introduced into the pressure reactor. Reaction time, pressure, temperature and depressurization rates were strictly controlled for each reactor test run.

AVAILABLE AND EMERGING TECHNOLOGIES FOR

2015-12-9 · Lignite < 8,300 Btu/lb 25 to 40% 68,945 13.8% 0.86% a Anthracite coal use is limited to reclaiming coal from coal refuse piles for use in a few power plants located close to the anthracite mines in eastern Pennsylvania.

Method of removal of sulfur from coal and petroleum

2018-4-18 · Organic Sulfur Spanish Lignite with Impregnated Nickel Sulfate,” Coal Preparation, 9, 185-197 (1991) Month N/A. A. B. Garcia et al., “Comparative Performance of Im pregnated Molybdenum-Sulfur Catalysts in Hydroge nation of Spanish Lignite,” Fuel, 68, 1613-1616 (Dec. 1989). A. P. Ginsberg et al., “Disulfur and Diselenium Com

Reducing sulfur content in flue gases produced by

A process for reducing the sulfur oxide content of flue gases produced by combustion of sulfur-containing coal containing cations of alkali metals, alkaline earth metals, or both, in ion exchangeable form. Flue gases containing sulfur oxides are recycled to contact coal awaiting combustion. Sulfur oxides are adsorbed on the coal during the contact step, react with alkali metal and alkaline

NACoal | Reducing Emissions and Coal Moisture

Currently, moisture removal rates push 11% and sulfur removal runs around 9.5%. DryFined coal has many benefits, including reduced total mass through the boiler, with the corresponding reduction in erosion-related maintenance issues. NoDak’s dried coal has a heating value around 7,000 BTUs, compared with the feed level of 6,200.

Gasification of lignite coal in North America

2018-4-17 · 5/31/2012 3 Molecular and physical structure high moisture content low heating value dissimilar contents and forms of oxygen Sulfur and nitrogen higher porosity and surface area higher reactivity in oxidizing and reducing atmospheres high gas and low tar yields in pyrolysis distinctive (alkaline) inorganic forms and mineral

Supporting Information for: Trace metal content of coal

2018-12-6 · Sulfur in dust 0.5-0.9 % Sulfur burned 0.06-0.51 % Table S3 contains the results of ICP-MS trace metal analysis for lignite coal in Kosovo compared to (1) average concentrations of trace metals in a cross section of lignite coal globally (IEA), and (2) trace metal concentrations reported in the literature for lignite coal in the US and

Coal Creek Station | Lignite Energy Council

In 2009, Coal Creek Station completed the addition of new technology for reducing moisture content in lignite. Because the refined coal burns hotter and more efficiently, less coal is needed to generate the same amount of power, which results in fewer sulfur dioxide,

14. By-products from the integrated gas combined cycle

2020-12-4 · Table 14.2 Slag and sulfur produced in a 500MW IGCC plant Gasification technology Slurry feed gasifier Dry feed gasifier Study coal High sulfur bituminous Low sulfur sub-bituminous Lignite MW net 500 500 500 HHV net efficiency (%) 41.8 40 39.2 Gasifier slag (kg/h) 16.354 11.434 56.29 Sulfur product (kg/h) 3.937 0.474 1.982 Data from US EPA (2006).

Upgrading of high moisture content lignite |

Removal of inherent moisture from run-of-mine lignite was tested by lock-feeding the lignite, which was previously sized by screening into 25 kg autoclaves. High pressure, up to 4.053 MPa (588 psi), saturated steam was then introduced into the pressure reactor. Reaction time, pressure, temperature and depressurization rates were strictly controlled for each reactor test run.

Molecular Characterization of Soluble Components in

2020-7-31 · A lignite was subjected to sequential solvent extraction via continuously reducing particle size from around 20 to more than 200 mesh. Five sets of n-hexane and methanol extracts from the particles were characterized by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI FT-ICR MS) and gas chromatography–mass spectrometry. The total extract yield

Reducing Freshwater Consumption at Coal-Fired Power

2011-4-21 · Reducing freshwater consumption at coal-fired power plants can occur directly or indirectly. Direct approaches are aimed specifically at reducing water consumption, and they include dry cooling, dry bottom ash handling, low-water-consuming emissions-control technologies, water

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