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 .
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 .
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 .
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}, .
WEBFlue gas desulfurization (FGD) is a very common method for gas claning adopted in a gas processing plant. In this process, the flue gas with acid vapors is scrubbed to remove it as a byproduct. Most of the FGD processes use alkali to scrub the flue gas. Many designers of FGD adopt the limestone gypsum process.
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 ...
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 ...
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}, .
WEBThis study aims to understand the roles of hydrogen and carbon monoxide during the desulfurization process in a coal gasifiion system that H2S of the syngas was removed by Fe2O3/SiO2 sorbents. The Fe2O3/SiO2 sorbents were prepared by incipient wetness impregnation. Through the breakthrough experiments and Fourier transform infrared ...
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
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 .
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 ...
WEBOct 18, 2023 · At present, the desulfurization technology is divided into pretreatment, inuse treatment, and posttreatment. Inuse treatment, in the case of coal, is generally defined as the spraying of desulfurizer into the coalburning boiler, which is capable of converting SO 2 and SO 3 emissions from coal combustion into sulfites or sulfates (Lu .
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 .
WEBSep 15, 2020 · The process of HClHFHNO 3 and stepwise treatment reduced the ash content and sulfur content to a larger extent, with ultrasoniion after flotation and acid treatment having the highest sulfur removal from raw coal. The predesulfurization processes resulted in the differences of sulfur distribution in coal bulk and coal surface, .
WEBApr 1, 2021 · Pervaporative desulfurization process, Adopted from Reference [18] ... It is a black coallike crystalline material containing SiO 2, Al 2 O 3, Fe 2 O 3, CaO, MgO, and fixed carbon. Hariprasad et al. [126] investigated dolochar and activated dolochar in adsorptive desulfurization of crude oil. The result is encouraging since 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 .
WEBMay 1, 2012 · Wet desulfurization of Pittsburgh No. 8 coal and Illinois No. 6 coal were conducted with sodium hypochlorite in the laboratory. Pittsburgh No. 8 coal was leached by hypochlorite at high pHs in one ...
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 ...
WEBApr 1, 1989 · A successful precombustion coal desulfurization process is very likely to be a hybrid process that integrates chemical, physical and microbial approaches. Nevertheless, I believe it is the microbial approach that holds the greatest promise of over coming that formidable obstacle organically bound sulfur.
WEBNov 10, 2017 · The magnetic desulfurization separation process on fine coal is illustrated in Fig., the high sulfur fine coal was graded to mm/ microprocessing system administers microwave energy to the mm/ mm high sulfur fine coal with different microwave energy is selectively absorbed by different minerals .
WEBDec 12, 2012 · The desulfurization process is important for the reduction of harmful SO x emissions; therefore, the development of a CFD model capable of predicting chemical reactions involving desulfurization is key to the optimization of reactor designs and operating conditions. To model the process, one gaseous phase and five particulate .
WEBSep 22, 2016 · Special attention is required on the fine particle control after desulfurization because a large quantity of fine particles are emitted into the atmosphere from the coalfired power plants. In an attempt to figure out the transformation of fine particles during the limestone gypsum desulfurization, the physical properties of fine particles before and .
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 ...
WEBSep 1, 2020 · Desulfurization from coal will prevent many environmental damages, especially air pollution. Therefore, this process is essential in order to eliminate the harmful environmental effects of coal.
WEBMay 1, 2016 · SO 2 (approximately 5 vol.%) and oxygen (2–6 vol.%) were confirmed to be exhausted in the regenerator of a pilot plant due to the unreacted oxygen remaining in the regeneration process of the hot gas desulfurization system. In this study, copper as a alytic promoter was added to SnZrbased alyst to reduce the alyst deactivation .
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.
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 ...
WEBA preliminary study was conducted on the coal desulfurization process via NaBO 2 electroreduction with pulse voltage using a borondoped diamond (BDD) thin film electrode. It has been proved that NaBO 2 was converted into NaBH 4 by 11 B NMR. The factors that influence the conversion rate of NaBO 2 into NaBH 4 and coal .
WEBMost of the coal, oil and natural gas produced in the world are used as fuels and a small part is used as a chemical feedstock. Undesulfurized coal and oil in the combustion process will produce a large number of sulfur oxides (SOx), serious harm to human health, and environmental damage. The unpurified natural gas containing hydrogen sulfide .
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 .
WEBJan 1, 2016 · He Z Q,Qi L M. Coalfired Power Plant Flue Gas Desulfurization Wastewater Treatment Process[J].Technology of Water,36(3):133135. Summarization of Nondischarge for Watersaving and ...
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.
WEBNov 10, 2017 · Section snippets Experimental and analysis methods. The magnetic desulfurization separation process on fine coal is illustrated in Fig. 1. First, the high sulfur fine coal was graded to mm/ microprocessing system administers microwave energy to the mm/ mm high sulfur fine coal with different .
© DZCrusher - كل الحقوق محفوظة
