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Flue Gas Desulfurization. A coking company in Yuxian County, desulfurizer grinding production line by ALPA Powder ...
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Wu et al. analyzed the ... three key parameters of the powder injection desulfurization during the RH process were discussed. Conclusions are summarized as follows: (1) Most of the finer powder particles with a 3 mm diameter tended to remain at the steel surface in the vacuum chamber. Only a small fraction entrained by the steel flow into the ...
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Semi‐dry flue gas desulfurization was investigated with several kinds of SO 2 sorbents, such as slaked lime, limestone, Mg(OH) 2 and concrete pile sludge, in a powder‐particle spouted bed. Slurry droplets including sorbent fine particles were fed to a spouted bed of coarse inert particles spouted with hot gas containing SO 2.SO 2 removal …
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An energy minimum multiscale model was adjusted to simulate the mesoscale structure of the flue gas desulfurization process in a powder-particle spouted bed and verified experimentally.
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Based on research by Wu et al. (Wu et al. 2004) for NaHCO 3 powder, when the calcium-sulfur ratio is 0.5–2.5 and the particle size is less than 30 µm, the reaction temperature for the best desulfurization effect is between 400.15 and 423.15 K. NaHCO 3 has been employed by the Energy Environmental Engineering and Consulting Firm for higher ...
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Based on research by Wu et al (Wu et al., 2004) for NaHCO 3 powder, when the calcium-sulfur ratio is 0.5-2.5 and the particle size is less than 30 µm, the reaction temperature for the best …
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Wu et al. [24, 25] simulated and analyzed the process of water vaporization and desulfurization in the powder-particle spouted bed by using Eulerian-Eulerian two-fluid model (TFM) method and ...
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Through model simulation, Wu et al. [101] showed that sodium bicarbonate powder sprayed into the flue gas at 127–150 °C was capable of effectively eliminating SO 2, whose desulfurization efficiency was closely linked to particle size.
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A spouted bed of binary particle mixture was applied to a low temperature desulfurization process in order to develop a new type of semidry flue gas desulfurization (FGD) technology. We investigated the effects of operating parameters, such as type of SO2 sorbent, diameter of SO2 sorbent particles, apparent residence time of gas in the bed, approach to saturation …
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alysts in desulfurization and denitrification. 2 | THE PRINCIPLE OF ACTIVATED COKE DESULFURIZATION, DENITRIFICATION, AND DUST REMOVAL 2.1 | Desulfurization principle Activated coke flue gas desulfurization technology is a recyclable dry flue gas purification technology. This technology uses activated coke with adsorption properties to ...
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Enhanced oxidative desulfurization activity over NH 2-MIL-125 ... the obtained powder was separated by centrifuging. Finally, the powder was purified 3 times with DMF and MeOH, respectively. It was then thoroughly dried in a vacuum oven at 100 °C for 12 h. ... Haoyu Wu: Conceptualization, Data curation, Writing – original draft, Writing ...
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It was done a physicochemical and mineralogical characterization of the molding sand wastes of the iron casting process, being these sands the main residue of the process, representing 65 to 85 % of the total waste. According with the obtained results, the chemical composition of the material (expressed in weight percentages) is the following: 77.9 SiO2, 6.6 Al2O3, 8.56 …
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A series of hierarchically porous amino-functionalized Zr-MOFs (HP-UiO-66-NH 2-X) anchored phosphomolybdic acid catalysts have been synthesized by a template-free method.. PMA/HP-UiO-66-NH 2-9 with an average mesopore size of 4.0 nm exhibits the highest catalytic ODS activity.. DFT results indicate that the electron transfer (from amino group to PMA) …
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Wu et al. [11] studied the flue gas desulfurization reaction process and the spouted bed's heat and mass transfer process using the CFD combined with the two-fluid …
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The desulfurization efficiencies of 20%CuZT/p-CF in inert, reducing and gasification atmospheres are , 48.1% and 39.8%, respectively. ... heated at 80 °C while grinded to remove the ether in the oil, and orange powder was obtained. The product was denoted as H 6 PW 9 V 3 O 40. 0.064 g (0.3 mmol ... Conceptualization. xia Wu: Data curation ...
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The semi-dry flue gas desulfurization in a powder-particle spouted bed is a complex multiphase reaction system, and its reaction principle is shown in Fig. 1.The sulfur-containing flue gas enters through the nozzle at the bottom of the spouted bed to drive densely packed SiO 2 particles flow. After the gas-particle two-phase flow is stable, the slurry, the …
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The powder-particle spouted bed process is one of the semi-dry processes that have been developed for flue gas desulfurization. In this study, which is designed for SO2 removal by a powder-particle spouted bed, the reaction term is included in one-dimensional and streamtube models that were presented previously for spouted beds. Hydrated lime is used as the sorbent …
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dry powder reaches 40 to 80% when the sodium-to-sulfur ratio is between 0.5 and 3.0. Based on research by Wu et al. (Wu et al. 2004) for NaHCO 3 powder, when the calcium-sulfur ratio is …
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Du J L, Yue K, Wu F, Ma X X, Hui Z Q. Numerical investigation on the water vaporization during semi dry flue gas desulfurization in a three-dimensional spouted bed. Powder Technology, …
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Semantic Scholar extracted view of "Enhanced oxidative desulfurization activity over NH2-MIL-125(HAc) through facet modulation by acetic acid and surface modification by amino group" by Haoyu Wu et al.
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DOI: 10.1016/j.apt.2019.10.024 Corpus ID: 210247029; Numerical simulation of semi-dry flue gas desulfurization process in the powder-particle spouted bed @article{Wu2020NumericalSO, …
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The results confirmed that PPSB has the advantage of higher desulfurization efficiency than conventional processes. Based on the bed size studied by Ma et al, Wu et al. (Wu et al., 2020) used computational fluid dynamics (CFD) to simulate the mass and heat transfer and desulfurization processes in a two-dimensional PPSB.
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The experiment proved that the reduced iron powder affects the sulfur in the removed coal. When the mass ratio of coal powder to iron powder was 5:2, the best desulfurization effect was obtained at 600 °C for 1 h. The desulfurization rate reached 80.09%, and more than 76.32% organic sulfur was removed.
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Wu, F., Yue, K., Gao, W., Gong, M., Ma, X., & Zhou, W. (2019). Numerical simulation of semi-dry flue gas desulfurization process in the powder-particle spouted bed.
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An energy minimum multiscale model was adjusted to simulate the mesoscale structure of the flue gas desulfurization process in a powder-particle spouted bed and verified experimentally. The obtained results revealed that the spout morphology simulated by the adjusted mesoscale drag model was unstable and discontinuous bubbling spout unlike the stable continuous spout …
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The desulfurization properties of granules made of limestone powder were studied. Their properties were compared with those of crushed limestone that is traditionally used as a desulfurization agent.
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Gas–solid two-phase flow and water vaporization processes tend to have a significant impact on the efficiency of flue gas desulfurization with a powder-particle spouted …
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The invention discloses a preparation method for desulfurized gypsum Beta powder, and the steps are as follows: A. base material preparation: screening and warehousing the desulfurized gypsum of a power station with the fineness being 40 to 60 Mum, piling upwards by a piling shed and airing, and dehydrating some adhesive water (less than or equal to 10 percent).
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In our previous study, a novel low rank coal desulfurization method was proposed (Xia, 2018) by using the Fe powder to promote the coal desulfurization. It was found that the organic sulfur can be transferred to the Fe powder. After the pyrolysis of coal and Fe powder mixture at the temperature of 400–550 °C, plenty of Fe-related magnetic ...
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