Emission reduction process for dechlorinating flue‐gas …
converted into a gypsum slurry by the desulfurization pro-cess. The latter is then dehydrated to produce FGD gypsum (as shown in the following equations).17 Thus, the synthetic FGD gypsum can be used to replace natural gypsum in sev-eral industries.18,19 SO 2 in flue gas: Dissolution of limestone: An overall chemical reaction of the above ...
Wet flue gas desulfurization using alkaline agents
— An experimental study of flue gas desulfurization in a pilot spray dryer. Environ Prog 1997; 16: 20–28. 10.1002/ep.3300160116 Search in Google Scholar Ollero P, Gutiérrez Ortiz FJ, Cabanillas A, Otero J. Flue-gas desulfurization in circulating fluidized beds: an empirical model from an experimental pilot-plant study.
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Efficient utilisation of flue gas desulfurization gypsum as a potential
— Efficient utilisation of flue gas desulfurization gypsum as a potential material for fluoride removal. Author links open overlay panel Jianhua Kang, Xiaoqin Gou, Yuehua Hu, ... Leaching characterization of dry flue gas desulfurization materials produced from different flue gas sources in China. Fuel, Volume 204, 2017, pp. 195-205.
Preparation of α-High Strength Gypsum from Flue Gas …
— 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 …
Impact of flue gas desulfurization gypsum and lignite …
— A recent study has revealed that flue gas desulfurization (FGD) gypsum and lignite humic acid application enhanced the salt leaching and crop production. ... at coastal area of North Jiangsu Province, China. The soil is sandy clay loam texture with pH of 8.43 and clay content of 185 g kg−1. Six treatments included three FGD gypsum rates (0, 1 ...
Preparation of α-High Strength Gypsum from Flue Gas Desulfurization
— 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 gypsum. To obtain α-CSH with the satisfactory performances, a facile hydrothermal-aging pretreatment process for FGD gypsum raw materials was proposed, where FGD …
Diffusion of flue gas desulfurization reveals barriers and
— 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 strongly depended on regulation.
Carbonation of gypsum from wet flue gas desulfurization …
— In this paper, waste gypsum from wet flue gas desulfurization (WFGD) mixed with NH3·H2O was applied for CO2 absorption in the solid-liquid-gas phase system. The effects of operation temperature, CO2 flow rates, and ammonia-to-gypsum ratio on carbonation process were discussed. Meanwhile, a model for CO2 absorption in the …
Improvement of Saline-Alkaline Soil via Flue Gas Desulfurization Gypsum
— [20] Stout WL and Priddy WE 2008 Use of flue gas desulfurization (FGD) by-product gypsum on alfalfa Commun Soil Sci. Plant Anal 27 2419-2432. Google Scholar [21] Tobert HA and Watt DB 2014 Impact of flue gas desulfurization gypsum application on water quality in a coastal plain soil J Environ Qual 43 273-280. Google Scholar
Surface modification of calcium sulfate whisker prepared from flue gas
— Surface modification of calcium sulfate whisker prepared from flue gas desulfurization gypsum. Author links open overlay panel Chengjun Liu, Qing Zhao, Yeguang Wang, Peiyang Shi ... The authors gratefully acknowledge supports by the Natural Science Foundation of China (No. 51374059, No. 51304042), and the Fundamental Research …
Salt-Affected Soil Amelioration with Flue Gas …
4,856km2 and occupies about 41.3% of the total area (National Bureau of Statistics of China, 2006). Almost all of this area is dry agricultural land. About 38% of the total cultivated area is salt ...
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Flue-Gas Desulphurization
Control and Treatment of Air Emissions. Shahryar Jafarinejad, in Petroleum Waste Treatment and Pollution Control, 2017. 5.1.5 Flue-Gas Desulfurization. Flue-gas desulfurization (FGD) is a scrubbing technique that uses an alkaline reagent (typically a sodium- or calcium-based alkaline regent) to remove SO 2 from flue gas (Tri-State …
Review of Design, Operating, and Financial Considerations in Flue Gas
— 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. …
Impact of flue gas desulfurization gypsum and
Impact of flue gas desulfurization gypsum and lignite humic acid application on soil organic matter and physical properties of a saline-sodic farmland soil in Eastern China. Jiangkuan Nan1 & Xiaomin Chen1 & Can Chen2 & Muhammad Siddique Lashari1 & g Deng1 & …
Performance of green binder developed from flue gas desulfurization
— Flue gas desulfurization gypsum (FGDG) and fly ash (FA) are by-products from coal-fired power plants that urgently need to be recycled in a sustainable way. This study aims to develop a green binder using FGDG incorporating cement and large-volume FA that can substitute some cement in structural and geotechnical engineering …
Recent advances in flue gas desulfurization gypsum …
— In this study we reviewed the Flue Gas Desulfurization processes and the different options to improve its efficiency as Non-regenerable Wet and Dry methods, the …
Progress of Desulfurization and Denitration Technology of Flue Gas in China
— [19] Qi C. B. 2010 Comparison between Magnesium Oxide and Limestone-Gypsum Wet Flue Gas Desulfurization Technology Silicon Valley 9 056. Google Scholar [20] Zhao X., Gao J., Wu S. H. and Qin Y. K. 2003 Development of Dry and Semi-Dry (Calcium Base) Flue Gas Desulfurization Technology Chemical Engineering 31 64-67. …
A critical review on the use of flue gas desulfurization …
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 …
A comprehensive review of flue gas desulphurized gypsum: …
— The use of waste to capture CO 2 has been on the rise, to reduce costs and to improve the environmental footprint. Here, a flue gas desulfurization (FGD) gypsum waste is proposed, which allows us ...
Utilization of flue gas desulfurization gypsum to produce …
— Flue gas desulfurized gypsum (FGDG) is an industrial by-product discharged from thermal power plants, smelters, and large-scale enterprise boilers. It is produced when sulfur is removed from flues gases in the flue gas desulfurization (FDG) system, and the formation processes are shown by the following equations (Liu et al., …
Flue Gas Desulfurization: The State of the Art [J]
— livered to the flue gas in an aqueous slurry form (LSD) or as a dry powder [furnace sorbent injection (FSI), LIFAC process (LIFAC), economizer sorbent injection (ESI), duct sorbent
Diffusion of flue gas desulfurization reveals barriers and
— 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 …
Evaluation of flue gas desulfurization gypsum as a low-cost …
— Satellite measurements oversee China's sulfur dioxide emission reductions from coal-fired power plants; Environmental change, adaptation strategies and the relevance of migration in Sub-Saharan drylands; A mild alcohol-salt route to synthesize α-hemihydrate gypsum microrods from flue gas desulfurization gypsum in large scale
A comprehensive review of flue gas desulphurized gypsum: …
— Flue gas desulfurization gypsum (FGDG) and fly ash (FA) are by-products from coal-fired power plants. This study focuses on using them as the basic components …
Vacuum filter belt for dewatering flue gas desulfurization（FGD） gypsum
The flue gas desulfurization (FGD) belt is specially designed for horizontal vacuum belt filters, used to filter the gypsum produced in the wet desulfurization process of flue gas in coal-fired power plants. The vacuum filter belt made of PFM Screen polyester fiber is used in the horizontal vacuum belt filter to dehydrate the gypsum accumulated in the flue gas …
Flue gas desulfurization: the state of the art
This paper presents a comprehensive review of the state of the art in flue gas desulfurization (FGD) technologies for coal-fired boilers. Data on worldwide FGD applications reveal that wet FGD technologies, and specifically wet limestone FGD, have been predominantly selected over other FGD technologies. However, lime spray drying …
Preparation of superfine and semi-hydrated flue gas desulfurization
— 1. Introduction. A massive amount of flue gas desulfurization (FGD) gypsum is generated from coal-fired power plants annually. Most FGD gypsum has still dumped in landfills for storage, which would not only involve serious water and air pollution problems and occupational health risks, but also waste large land and gypsum resources.
Flue gas desulfurization gypsum application for enhancing …
— We hypothesize that flue gas desulfurization (FGD) gypsum can be used as a soil amendment to accelerate the desalination process via calcium ions (Ca 2+) replacing exchangeable sodium (Na +) ions. Field experiments in reclaimed tidal lands in the Yangtze River delta were conducted with FGD gypsum applied at concentrations of 0, 15, 30, 45, …
Flue Gas Desulfurization Gypsum Crusher Plant For Sale
Flue gas desulfurization gypsum (FGDG) is an industrial by-product generated during the flue gas desulfurization process in coal-fired power plants. The process involves the wet scrubbing process that injects a lime or limestone reagent into the flue gas path to capture SO2 as CaSO 3, which is then converted to CaSO 4 through forced air oxidation.
A critical review on the use of flue gas desulfurization gypsum …
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 i …
Efficient utilisation of flue gas desulfurization gypsum as a potential
— This study introduces the use of a waste by-product from wet limestone flue gas desulfurization as a potential material for fluoride removal. ... China; Key Laboratory of Hunan Province for Clean and Efficient Utilisation of Strategic Calcium ... Flue gas desulfurization (FGD) gypsum removes 93.31% of fluoride from 109 mg/L to 7.3 mg/L ...
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China FTM® Desulfurization Gypsum Dryer for Sale
The main application purpose of desulfurization gypsum is to dry it and use it as the retarder of cement, or smelt is as semi-hydrated gypsum for making gypsum board, gypsum block and plastering anhydrite. Desulfurization gypsum dryer or fgd gypsum dryer adopts horizontal air-swept structure.
Deterioration of mechanical properties and damage mechanism of flue gas
— Flue gas desulfurization gypsum (FGDG), a solid waste material generated by power plants, offers a cost-effective solution for preparing backfill materials. Con