Flue gas desulfurized gypsum (FGDG) is a waste material produced in the power stations during the flue gas desulfurization process. In China, a small amount of FGDG is used as cement additives or for gypsum boards, but there still exist a mass of FGDG due to the lack of reusing methods. ... is another waste material from the power …
Ignoring emissions of Hg from coal ash and desulfurized gypsum will lead to ineffective mercury control in coal-fired power plants in China Environ Sci Technol . 2012 Mar 20;46(6):3058-9. doi: 10.1021/es300786d.
Request PDF | On Mar 20, 2012, Yufei Yang and others published Ignoring Emissions of Hg from Coal Ash and Desulfurized Gypsum Will Lead to Ineffective Mercury Control in Coal-Fired Power Plants in ...
As the waste of coal-fired power plant, desulphurization gypsum is mainly composed of CaSO 3 and CaSO 4, which can replace Na+ in saline-alkali soil to improve saline-alkali soil.
ABSTRACT In China, the desulfurization problem of power plants has been paid much attention by the government and the public. From 2014 to present, the nearly one hundred million tons of desulfurized gypsum has been discharged. The utilization rate of desulfurized gypsum in power plants has also become the focus of current …
Flue gas desulfurized gypsum (FGD gypsum), mainly originates from thermal power plants, smelters, and large-scale enterprise boilers. This article reviews …
Introduction. 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.
To solve the problems of difficult treatment of desulfurized gypsum and overmining of limestone, a kind of lime/gypsum flue gas desulfurization (FGD) collaborative desulfurized gypsum resource utilization process (LCS) was proposed. The system mainly includes the LCS-LFGD (lime/gypsum flue gas desulfurization system), LCS-C …
This study demonstrates the feasibility of establishing high-resolution emission inventories for Chinese cement plants using the mass balance method and plant-level input-output data and improves the understanding of the spatial patterns and temporal evolution of mercury emissions in China.
Semantic Scholar extracted view of "Study on the influence mechanism of flue gas desulphurisation gypsum on solid waste-based geopolymer grouting materials" by Dedan Duan et al. Skip to search form Skip to main ... Effect of curing temperature on the reaction kinetics of cementitious steel slag-fly ash-desulfurized gypsum composites …
Solid waste-based binders have been widely studied for decades. Recently, the steel slag-fly ash-desulfurized gypsum (SS-FA-DG) composite system was developed as a novel building cementitious ...
combustion process of the power plant. Dry desulfurized gypsum generated from dry desulfurization facilities is suitable as a CO 2 absorbing material due to the presence of CaO.
Gypsum deposits were formed during the Paleozoic Era, approximately 600 million years ago, when most of the Earth's surface was covered by salt water. Gypsum is ... fired power plants, steel plants, and other heating plants.8,9 This is important because the reaction of sulfur dioxide with
F lue gas desulfurization gypsum (FGDG) is a synthetic gypsum that is created during the removal of SO 2 from flue gas by reacting the SO 2 with calcite (CaCO 3) to form calcium sulfite (CaSO 3 …
Flue gas desulfurization gypsum (FGDG) is a coal combustion by-product that can be used in various beneficial ways. This review summarizes the recent …
1. Introduction. Flue gas desulphurisation gypsum (FGDG) mainly refers to the solid by-product produced via lime gypsum desulphurisation that is performed in various industries to treat flue gas after the combustion of sulphur-containing fuels, such as coal and petroleum [1].In the limestone gypsum flue gas desulphurisation process, 2.7 …
Learn how FGD removes sulfur dioxide from flue gases by using limestone slurry as a reagent. The web page explains the components and functions of FGD system, such as limestone …
It would be expected that more mercury would be present in coal ash and desulfurized gypsum from the increased combustion of coal and the abundance of Hg removal facilities in Chinese coal-fired power plants, highlighting the increased emphasis on the removal of mercury from atmospheric emissions of coal- Fired power plants in …
Flue gas desulfurization (FGD) gypsum is a byproduct of the combustion of coal, used for electricity generation. This material is generated during the process of scrubbing flue gases from power plants to remove sulfur dioxide emissions, which …
Flue gas desulfurized gypsum (FGD gypsum), mainly originates from thermal power plants, smelters, and large-scale enterprise boilers. This article reviews the production in China and the latest ...
The field experiment that improving alkalized soil by desulfurized gypsum to plant sweet sorghum in Xidatan of Ningxia indicated that, applying desulfurized gypsum could effectively reduce the alkalization degree, M- alkalinity and pH value of the soil, sig- nificantly enhance the seeding rate and yield. However, the effect of improvement did …
The two types of gypsum samples used in this study were obtained from a commercial coal-fired power plant. Both samples were collected from a double-contact flow-type desulfurization equipment. Table 1 presents the values of total mercury and carbon content. These values depend on the type of coal and combustion conditions.
Flue gas desulfurized gypsum (FGD gypsum), mainly originates from thermal power plants, smelters, and large-scale enterprise boilers. This article reviews the production in China and the latest beneficial utilizations of FGD gypsum. China is a large coal-consuming country and has always had serious …
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 ...
DOI: 10.1016/j.conbuildmat.2023.133302 Corpus ID: 261794915; Synergistic effect of red mud, desulfurized gypsum and fly ash in cementitious materials: Mechanical performances and microstructure
It would be expected that more mercury would be present in coal ash and desulfurized gypsum from the increased combustion of coal and the abundance of Hg removal facilities in Chinese coal-fired power plants, highlighting the increased emphasis on the removal of mercury from atmospheric emissions of coal- Fired power plants in …
duce the desulfurized gypsum, which is the desulfurization product of the wet FGD process in coal-fired power plants and also exists as a liquid slurry at the bottom of the scrubber. Gypsum slurry is then moved to a slurry tank through the gypsum bleed pump prior to separation by centrifugation. Notably, the dissolution of limestone (Eq.
A flue gas desulfurization process capable of producing a high purity gypsum and also making equipment employed as minimum as possible is provided, which process comprises the steps of cooling and ...
Flue gas desulfurization gypsum (FGD gypsum) is obtained from the desulphurization of combustion gases in fossil fuel power plants. FGD gypsum can be …
The above research shows that the application of desulfurized gypsum in concrete systems will help improve the overall performance of concrete, realize the industrial utilization of desulfurized gypsum, and turn desulfurized gypsum into treasure, which is in line with the green and low-carbon development concept.
Semidry desulfurization and wet desulfurization in a furnace are usually used in the circulating fluidized bed boiler in the power production of thermal power plants, and these two approaches lead to high calcium content in the fly ash and bottom slag of circulating fluidized beds and produce abundant flue-gas desulfurized (FGD) gypsum …
Disposition and utilization of desulfurization residues from thermal power plants in Portland cement was investigated, controlling the content of SO(3) at 3.0%(in mass), thus exploring the ...
Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo. Search 219,817,524 papers from all fields of science ... and Economic Effects of Resource Utilization Process for Lime/Gypsum Flue Gas Desulfurization Collaborative Desulfurized Gypsum}, author={Xia Xiao and Liqiang Zhang and …
DOI: 10.1016/j.envpol.2021.117799 Corpus ID: 236531280; Production and resource utilization of flue gas desulfurized gypsum in China - A review. @article{Liu2021ProductionAR, title={Production and resource utilization of flue gas desulfurized gypsum in China - A review.}, author={Sen Liu and Wei Liu and Fen Jiao …
Thermal Power Plant generates FGD gypsum as by-product during coal combustion. This study evaluates the characterization (spectroscopic and elemental), …
Flue gas desulfurized gypsum (FGDG) is a waste material produced in the power stations during the flue gas desulfurization process. In China, a small amount of FGDG is used as cement additives or ...
As we know, coal is the dominant energy in Chinese energy mix. Almost all of the coal-fired power plants are required to equip desulfurization facility to remove SO 2 in the flue gas, as illustrated in Fig. 1.The most popular desulfurization technology is wet-FGD using limestone, with the product called FGD-gypsum, which main content is CaSO 4. ...