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New Limestone-Gypsum Flue Gas Desulfuization Technology. Abstract: A new wet FGD processes which SO 2 was absorbed in the spray tower using granular limestone …
The production of flue gas desulfurization gypsum poses a serious threat to the environment. Thus, utilizing gypsum-based self-leveling mortar (GSLM) stands out as a promising and effective approach to address the issue. β-hemihydrate gypsum, cement, polycarboxylate superplasticizer, hydroxypropyl methyl cellulose ether (HPMC), retarder, and …
In this study, a flue gas desulfurization (FGD) gypsum was calcined as phosphate sorbent materials for the remediation of phosphate wastewater. RESULTS. In addition to the main crystalline phase of gypsum, FGD gypsum contains a small quantity of quartz, dolomite, calcite and magnesite.
In this paper oxidation of calcium bisulfite in aqueous solutions was studied, in connection with the limestone−gypsum flue gas desulfurization process. Experimental measurements of the oxidation rate were carried out in a laboratory scale stirred reactor with continuous feeding of both gas and liquid phase. A calcium bisulfite clear solution was used as liquid phase, and pure …
Cui et al. proposed a combination of limestone-gypsum wet flue gas desulfurization (WFGD) and wet condensation desulfurization technology for enhanced absorption desulfurization. This not only improved the desulfurization rate, but also reduced the energy consumption of the desulfurization system, and recovered heat and water [102] .
Download Citation | On Experimental Study of Development Calcined Gypsum from Flue Gas Desulfurization by Microwave Technology | Flue gas desulfurization gypsum (FGD gypsum) was irradiated with ...
Like natural gypsum, the application of flue gas desulfurization gypsum (FGDG) with irrigation provides economic and environmental value (Wang and Yang, 2018; Watts and Dick, 2014). FGDG is of low cost, because it is a side product of sulfur removal from fuel combustion in coal-fired power plants and does not require mining and processing ...
The synthesis of α-calcium sulfate hemihydrate (α-CSH) from flue gas desulfurization (FGD) gypsum is a good way to realize the comprehensive utilization of FGD …
As a byproduct generated during wet flue gas desulfurization, FGD gypsum is primarily composed of calcium sulfate dehydrate (C S ... (GZ1290), National Key Technology R&D Programs in the 13th Five-year Plan of China (2016YFB0303503, 2016YFC0700905), State Key Laboratory of High Performance Civil Engineering Materials ...
PDF | On Oct 1, 2009, Sheng-yu Liu and others published New Limestone-Gypsum Flue Gas Desulfuization Technology | Find, read and cite all the research you need on ResearchGate
Spray nozzle technology has improved greatly since scrubbers were first installed on utility units. It is now possible to achieve 98% to 99% SO 2 removal in systems with no packing or trays. An ...
At present, electrochemical desulfurization and denitrification technology is generally accompanied by unstable electrolysis reaction, high purification cost, low purification efficiency, and secondary pollution [19], [20], [21].and the technology of electrodialysis combined with liquid phase simultaneous desulfurization and denitrification has ...
XRD, SEM and elemental characterization of FGD gypsum. X-ray diffraction analysis revealed that the characteristic peaks at 2θ value of 11.8, 20.8 and 23.5 (Fig. 2a) of …
Comparative Analysis of Flue Gas Desulfurization Technologies in China's Energy Sector . Li Yizhe. 1,a,* 1. Northwest Normal University, 967 Anning E Rd, Lanzhou, China . a. 202131805514@nwnu.edu * ... gypsum desulfurization process is gypsum, which can be recycled and reused. This process is technologically mature, with high desulfurization ...
Flue-gas desulfurization (FGD) materials are solids generated when the SO2 in exhaust gases from coal-fired power plants is removed before the gases are released to the atmosphere. ... The most common FGD technology uses a limestone/gypsum wet-scrubbing process. Usually the plant is located downstream of the electrostatic precipitator (ESP) so ...
Composition, characteristics, and treatment technologies of condensable particulate matter present in flue gas emitted by coking plants in China
Fly ash–slag-based alkali-activated materials have excellent mechanical performance and a low carbon footprint, and they have emerged as a promising alternative to Portland cement. Therefore, replacing traditional Portland cement with slag–desulfurization gypsum-based alkali-activated materials will help to make better use of the waste, protect the …
Here the authors show that the global diffusion of flue gas desulfurization technology was very fast at times, especially for retrofit, and even after materiality, but …
The wet limestone/gypsum flue gas desulfurization (WFGD) technology has been attracting much interest, while handling with wastewater produced in WFGD is indispensable but difficult. Zero liquid Di...
3. Flue Gas Desulfurization Technologies. Flue gas desulfurization is an efficient method for the reduction of the sulfur dioxide emissions. Citation 2 Many processes are available in the market, such as (a) wet scrubbers, (b) spray dry scrubbers, (c) sorbent injection, (d) regenerable processes, and (e) combined SO 2 /NO X removal processes. The different …
Flue-gas desulfurization (FGD) is a set of technologies used to remove sulfur dioxide (SO 2) from exhaust flue gases of fossil-fuel power plants, steel company etc, and from the emissions of other sulfur oxide emitting processes. Limestone-gypsum desulfurization process is one of the most widely used desulfurization technologies in the world.
Flue gas desulfurization gypsum (FGDG) is an industrial by-product generated during the flue gas desulfurization process in coal-fired power plants. Due to its abundance, …
Therefore, in recent decades, the preparation of CSW from the industrial by-product, e.g. phosphogypsum [3,4], residue of citric acid [5], waste calcium chloride [6], flue gas desulfurization (FGD) gypsum[7,8], has attracted great scientific interests because this reasonable utilization can save the natural gypsum resource and simultaneously ...
Flue gas desulfurization gypsum (FGDG), a solid waste produced during sulfur removal in coal-fired power plants, has applications in saline-alkali soil amelioration due to its function of calcium‑sodium ion exchange. Existing research has focused on the use of gypsum to improve saline-alkali soils in non-coastal areas.
Over 200 flue gas desulfurization (FGD) technologies have been developed since the 1930s (Chun et al., 2017; Bo et al., ... Research on the incorporation of untreated flue gas desulfurization gypsum into magnesium oxysulfate cement. J. Clean. Prod., 271 (2020), p. 122497. View PDF View article View in Scopus Google Scholar. Hand, 1997.
Wet limestone FGD system is capable of removing SO 2 with efficiencies from 92% to 98% [10].. 2.1.2. Wet lime and magnesium-lime FGD systems. Lime scrubbing uses CaO, usually 90%, to remove SO 2 from the gaseous stream. Lime is more reactive than limestone slurry, but it is more expensive [12].The Magnesium Enhanced Lime (MEL) process [12] is a …
At present, the continuous accumulation of the flue gas desulfurization (FGD) gypsum in steel plants leads to the serious environmental issues and resource waste. To achieve green and sustainable development for the steel industry, it is significant to improve the usage of by-product gypsum. Employing the sintering FGD gypsum, ferric oxide, and graphite carbon …
FGD gypsum was obtained commercially from Guixi Power Plant in Guangxi Province, China. The FGD gypsum had a free water content of 4.15 wt%, a dry density of 2.84 g/cm 3, and a pH of 6.89.The crystal morphology and mineral composition of the solid samples of FGD gypsum were analyzed through powder X-ray diffraction (XRD) (D/MAX 2500 V, Rigaku, …
DOI: 10.1016/j.seppur.2021.119849 Corpus ID: 239274748; Summary of Research Progress on Industrial Flue Gas Desulfurization Technology @article{Li2021SummaryOR, title={Summary of Research Progress on Industrial Flue Gas Desulfurization Technology}, author={Xueke Li and Jinru Han and Yan Liu and Zhi-he Dou and Ting'an Zhang}, journal={Separation and …
Flue gas desulfurization gypsum (FGDG) is a by-product generated in the combustion of coal. This solid residue has the potential to be applied to the soil and help to reduce acidity and provide nutrients to soils impacted by surface coal mining. Thus, the objective of this work was to evaluate nutrients and heavy metals in soil and plant tissue and the …
