WEBApr 23, 2005 · Abstract. In this paper, a twostep desulfurization process for highsulfur coal was investigated. Two Chinese coals with the addition of 10 wt % potassium hydroxide or sodium hydroxide were ...
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WEBApr 1, 2003 · Desulfurization of the gases from coal combustion was studied, using limestone (marble) as the sorbent in a fluidizedbed reactor. The kinetic parameter, k, was measured by analyzing the reduction ...
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WEBMar 20, 2024 · Desulfurization wastewater is industrial wastewater with a high salt content, high metal ions, and high hardness produced by flue gas desulfurization of the limestonegypsum method in coalfired power plants. This paper summarizes the source of desulfurization wastewater, water quality characteristics, water quality impacts, and .
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WEBMar 1, 2011 · During the desulfurization process, the reaction, evaporation, crystallization, and trapping of hightemperature flue gas and desulfurization slurry may form new fine particles or adsorb on the ...
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WEBApr 15, 2022 · The desulfurization sludge was collected from four coalfired power plants loed in China's Shandong Province (two power plants, A and B) and inner Mongolia (two power plants, C and D). The detailed configuration and the air pollution control devices (Ds) are summarized in Table 1.
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WEBSep 1, 2021 · To intensify SO 2 absorption process in wet flue gas desulfurization (WFGD) spray scrubber, a comprehensive CFD model coupled transfer process with chemical reactions is established by Eulerian‒Lagrangian method and verified in a commercialscale device of 330 MW coalfired power unit. The desulfurization .
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WEBNov 1, 2018 · The wet limestonegypsum FGD process is most widely utilized owing to its high desulfurization efficiency and reliability (Srivastava and Jozewicz, 2001; Srivastava et al., 2001). In the combustion process with coal, SO 2 as acid gas is produced.
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WEBJan 1, 2023 · During the desulfurization of highsulfur Indian coal, the influence of potassium hydroxide. (KOH) and reaction time on coal characteristics was studied. A KOH concentration of 520% and. 624 ...
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WEBMar 1, 2024 · Coal gangue is a solid waste generated during the coal mining and washing process [28], [29], [30]. China's coal gangue reserves and annual growth have reached –5 Gt and – Gt respectively, making it the country with the largest coal gangue reserves in the world [31], [32]. If coal gangue is used as a desulfurization agent, the ...
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WEBOct 5, 2019 · The transformation from pyrite to soluble FeSO 4 and Fe 2 (SO 4) 3 is the main reason for highsulfur coal desulfurization during the process of wetgrinding. Therefore, this investigation puts ...
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WEBFeb 9, 2023 · Technologies for desulphurisation and others cleaning process from coal have several advantages and disadvantages (Saikia et al. Citation 2016; Wilcox et al ... "Desulfurization of Coal Using the Electrochemical Technique in Neutral and Alkaline Media." Energy Sources, Part A: Recovery, Utilization, and Environmental Effects 39 : .
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WEBDec 15, 2023 · Microbial coal desulfurization in an airlift bioreactor by sulfuroxidizing bacterium Thiobacillus ferrooxidans. Fuel Process Technol. (1993) Brierley ... Then the operating mechanism and particle behavior during the coal staged conversion process were comprehensively discussed. Additionally, the effects of operating and structural ...
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WEBDOI: / Corpus ID: ; Removal of fine particles by heterogeneous condensation in the doublealkali desulfurization process article{Bao2011RemovalOF, title={Removal of fine particles by heterogeneous condensation in the doublealkali desulfurization process}, author={Jingjing Bao and .
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WEBOct 15, 2019 · Semantic Scholar extracted view of "Desulfurization of high sulfur fine coal using a novel combined beneficiation process" by Xiaodong Yu et al. ... Fine coal waste from the coal mining process has not been used as clean energy even though the amount is very abundant in the world.
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WEBJan 31, 2009 · Oxidative desulfurization process was utilized to treat coal samples using KOH as an oxidant. Oxidative desulphurization (of organic/inorganic sulphur forms) of coal was achieved by using deep ...
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WEBJan 10, 2024 · Flue gas desulfurization (FGD) is a critical process for reducing sulfur dioxide (SO2) emissions from industrial sources, particularly power plants. ... coal preparation 7, lowsulfur fuels 8 ...
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WEBAs mentioned above, Li proposed a new desulfurization process with sodium borohydride reduction for highsulfur coals. 19 After that, we researched the use of NaBH 4 for deep desulfurization of CWS and gasoline in depth and the common influencing factors such as reductant (NaBH 4) concentration, treatment time, coal particle size, reaction ...
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WEBAug 15, 2020 · The effect of coal feed size on S rej was studied by using a microwave pretreatment time of 3 min and a background field strength of 2750 Gs. As Fig. 7 shows, the desulfurization rate increased monotonically with decreasing coal particle size, attaining a maximum value of 48% when the feed particle size was − mm. The reason for this .
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WEBJul 1, 2011 · Coal desulfurization is imperative to create clean coal and reducing harmful emissions during the combustion process. However, organic sulfur in coal is more difficult to remove than inorganic sulfur.
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WEBDec 15, 2003 · A high capacity, monolith or particle shaped, regenerable sorbent has been developed for the desulfurization of a dry type coal gas. It consists of crystalline MnAl 2 O 4, a small amount of disperse MnO, and an amorphous Mn–Al–O sulfur is the only observed regeneration product during regeneration with SO sorbent can .
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WEBJun 5, 2017 · 1. Introduction. Flue gas desulfurization (FGD) is used in many coalfired power plants to primarily reduce the emission of sulfur dioxide. Among various FGD process technologies, the wet scrubber technology is the most popular.
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WEBNov 8, 2023 · article{Chen2023ComparativeIO, title={Comparative investigation on the chemical predesulfurization process of a high sulfur coal through orthogonal experiments: a case study}, author={Yumeng Chen and Lanhui Huang and Zhendong Song}, journal={International Journal of Coal Preparation and Utilization}, year={2023}, .
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WEBOct 23, 2011 · This electrochemical reductive desulfurization (ERD) method for coal water slurry (CWS), which was an offshoot of the research Novel Desulfurization Method of Sodium Borohydride Reduction for Coal Water Slurry (Shen, Y. F.; Sun, T. H.; Jia, J. P. Energy Fuels 2011, 25, 2963–2967.), utilized hodic reduction to change some .
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WEBThe zinc ferrite–silicon dioxide composite powder provides reactive, durable, and regenerable reactant for dry sulfur removal sorbent. The next step of preparation of dry desulfurization sorbent is embedding composite powder into the supporting material and shaping the honeycomb structure. Table
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WEBApr 11, 2021 · Flue gas desulfurization (FGD) is the removal process of sulfur dioxide (SO2) from flue gases. Sulfur dioxide in gases is produced by the combustion of fossil fuels and many industrial processes such as gasoline refining as well as cement, paper, glass, steel, iron and copper production. Flue Gas Desulfurization (FGD) System Description
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WEBAug 1, 2023 · Coal washing, flue gas desulfurization using different sorbents, biological technologies and electron beam irradiation are some of the common desulfurization techniques (Hanif et al., 2020, Park et al., 2019, Sharif et al., 2021, Zhang et al., 2019, Zwolińska et al., 2020). ... The process does not generate solid waste (gypsum) or .
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WEBMar 1, 2013 · Highlights A systematical study on a novel magnesiumbased WFGD process with a spray scrubber. Na 2 S 2 O 3 was found effectively to inhibit the oxidation of desulfurization byproduct. The desulfurization efficiency could reach a high level above 90%. A desulfurization process model was established by the doublefilm theory. The .
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WEBMar 29, 2022 · The method of zinc oxides can be used for fine desulfurization. With coal gases desulfurized by zinc oxides, the content of sulfur in coal gases could be as low as the level of 1–1000 parts per billion (ppb). ... Thus, if the desulfurization process could cut down the pressure and temperature losses of blast furnace gases, it would have ...
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WEBAmong the desulfurization processes, the oxidative desulfurization (ODS) process is a promising method to achieve very low and nearzero sulfur content of the fuel. In this process, sulfur compounds are converted to the corresponding sulfone by a alyst and in the presence of an oxidant. ... (MgAl, CuAl, and CoAl) on the GO as supports for ...
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WEBMay 16, 2020 · Magnesia FGD is an appealing process especially for small and medium industrial boilers due to its high desulfurization capacity, process simplicity, small cost, and low energy consumption. Magnesium sulfite produced from this method can be easily regenerated by heat decomposition between 900 and 1000 °C, similar to the .
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WEBApr 24, 2022 · Abstract To explore the feasibility of organic sulfur removal using organic acids, oxalic acid, citric acid and ascorbic acid were selected as desulfurization reagents. Combined with microwave irradiation technology, desulfurization experiments of highsulfur coal treated with nitric acid were conducted. The orthogonal experimental results .
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WEBApr 11, 2013 · Recently, biological process of desulfurization took a big step towards the development of clean coal technology. The basic concept of different technologies for desulfurization has been discussed ...
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WEBDec 1, 2021 · Pyrolysis desulfurization is suitable for coal. By changing the coking conditions to promote the effusion of sulfide in the form of gas. ... The high temperature, pressure and strong acid or alkali in traditional desulfurization process increase the hazards and bring secondary pollution. Essentially, desulfurization is a combination of ...
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WEBThe Coolside desulfurization process is a dry sorbent injection technology developed for retrofit SO/sub 2/ control in coalfired utility power stations. The process is low in capital and space requirements since, in its ideal configuration, the existing ductwork and particulate collector are used as the SO/sub 2/sorbent reaction spaces. It has been .
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WEBIn this paper, the desulfurization of Fangshan coal was carried out by tetrachloroethylene extraction under ultrasonic and microwave irradiation. The GCMS analysis of the tetrachloroethylene extraction reveals that organic sulfur in coal can be removed by tetrachloroethylene extract under ultrasonic and microwave irradiation. It is found that .
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