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 ...
WEBFeb 15, 2018 · The desulfurization process in the hydropyrolysis of highsulfur coal could be regarded as two stages based on the evolution profiles of H2S. The first peak at 250–450 °C was derived from the ...
WEBMay 1, 2016 · Catalytic reduction of SO 2 under the regeneration of offgas containing oxygen over CuSnZrbased oxides for the hot coal gas desulfurization process. Author links open overlay panel NoKuk Park a, Tae Hoon Lee ... In view of the low utilization rate of byproduct in limestonegypsum wet flue gas desulfurization process, a method of .
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 ...
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 .
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 .
WEBAug 23, 2021 · The microbial process followed the oxidativedesulfurization mechanism for the removal of sulfur from the coal sample. The bacterium performed cleavage of the sulfide bonds in pyrite to release ...
WEBMar 1, 2024 · ABSTRACT In the present study, desulfurization and deashing of the low rank lignite coal were investigated by alytic oxidation using H2O2/HCOOH oxidation system in the presence of Fe3+ and Cu2+ .
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 .
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
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 .
WEBJan 1, 1983 · The nature of the desulfurization reaction of pyrite, alone and in the pres ence of coal, was studied under conditions of the Ames process [8,9]. It was shown that in this process the sulfur is extracted by conversion into soluble forms such as sulfates.
WEBJun 1, 2018 · A flue gas desulfurization (FGD) process is used in coalfired power plants to remove sulfur dioxide gas and fly ash in fuel gas. The wet limestonegypsum FGD process is widely used, owing to its ...
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 .
WEBMay 5, 2020 · In the process of flue gas purifiion for coalfired boiler, wet flue gas desulfurization (WFGD) is one of the most important sections [1], [2]. In a WFGD system, the injection of a large amount of sorbent solution can remove SO 2 effectively while causing the gas temperature to decrease and the flue gas to be saturated with water.
WEBNov 3, 2011 · A preliminary study was conducted on the coal desulfurization process via NaBO2 electroreduction with pulse voltage using a borondoped diamond (BDD) thin film electrode. It has been proved that ...
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.
WEBDOI: / Corpus ID: ; Experimental Study of Flue Gas Desulfurization Wastewater Zero Discharge from Coalfired Power Plant inproceedings{Li2016ExperimentalSO, title={Experimental Study of Flue Gas Desulfurization Wastewater Zero Discharge from Coalfired Power Plant}, .
WEBFeb 15, 2009 · But it can be enwrapped by desulfurization reaction products to form a dense irregular blocklike structure after CaCO 3 desulfurization process. And fine particles are mostly of cube or prism ...
WEBSep 15, 2020 · article{Wang2020EffectOP, title={Effect of predesulfurization process on the sulfur forms and their transformations during pyrolysis of Yanzhou high sulfur coal}, author={Meijun Wang and Yanfeng Shen and Yongfeng Hu and Jiao Kong and Jiancheng Wang and Liping Chang}, journal={Fuel}, year={2020}, volume={276}, pages={118124}, .
WEBApr 6, 2022 · The desulfurization degree of– mm fine coal is twice that of the coal particles with the size in the range – mm. Magnetic separation of pulverized coal effectively enhanced the ...
WEBJun 1, 2024 · Ionic liquids (ILs) were selected and applied to investigate the best coal desulfurization through orthogonal tests. FTIR, XPS, SEM and contact angle tests were used to characterize the effect on the physical and chemical structures in coal for revealing the coal desulfurization mechanism by ILsH 2 O 2 system. The orthogonal test results .
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 ...
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 : .
WEBNov 1, 2018 · Coalfired power plants can improve wet limestone scrubbing with advanced process control. ... The chemical reaction formula for this desulfurization process is: CaCO 3 + SO 2 + 2 H 2 O +½ O 2 ...
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