Overview of the Industrial Byproduct Gypsum 2.1. Source Desulfurization gypsum (DG) is the byproduct of the limestone–gypsum flue gas desulfurization process in coal-fired power plants [] . In China, the annual production of DG can reach up to million tons, and the utilization rate has been around % in recent years.
As people gradually deepened understanding FGD gypsum, many scholars began carried out extensive research and application work for its utilization, a large number of …
The flow chart of the utilization of FDG gypsum is shown in Fig. 12. After the desulfurization of flue gas from CSA cement industry itself and other industries, the collected FDG gypsum can be applied in later two steps during CSA manufacture. On the one hand, FGD gypsum is able to provide as input materials for the CSA cement.
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.
The industrial byproduct gypsum is a general term for byproducts discharged from industrial production with calcium sulfate as the main ingredient. Due to the high number of impurities and production volume, the industrial byproduct gypsum is underutilized, leading to serious environmental problems. At present, only …
Desulfurization wastewater is industrial wastewater with a high salt content, high metal ions, and high hardness produced by flue gas desulfurization of the limestone-gypsum method in coal-fired power plants. This paper summarizes the source of desulfurization wastewater, water quality characteristics, water quality impacts, and …
[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. …
Regarding the utilization amount (ratio) of FGD gypsum in each utilization category, a previous report [30] showed that industrial byproduct gypsum (including FGD gypsum, phospho-gypsum, and titanium gypsum) used for wallboard (24.3 Mt, 27.8%) and cement retarder (60 Mt, 68.3%) production accounted for 96% of the total reuse …
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 …
1.1. Flue gas desulfurization processes. The flue gas desulfurization (FGD) processes can be separated into two main categories: once-through and regenerable processes, depending on how the sorbent is treated after SO 2 adsorption (Srivastava and Jozewicz, 2001).Once-through, or non-regenerable, processes utilize the sorbent as a …
DOI: 10.1016/j.fuel.2021.122898 Corpus ID: 245313567; Utilization of desulfurization gypsum potentially impairs the efforts for reducing Hg emissions from coal-fired power plants in China
The effective and safe use of FGD gypsum in agricultural land is still debated in some countries even though its effectiveness in soil management has been reported in many studies. Thus, the changes in the levels of soil salinity, alkalinity, crop yield, and other physicochemical properties in different soil types and crops after …
main desulfurization technology are used by most countries to control emissions of SO2,at the same time generating a huge amount of flue gas desulfurization gypsum。This paper describes the physical and chemical properties of natural gypsum and FGD gypsum,reviews the utilization of experience and research status and progress of …
Over the past few decades, there has been wide interest in developing strategies for the utilization of flue gas desulfurization gypsum (FGDG), a by-product of scrubbing sulfur from combustion ...
The past several years has witnessed great progress in utilization of industrial waste gypsum. Newly developed carbonation technology toward CaCO3 preparation also …
Basic characteristics and comprehensive utilization of FGD gypsum. Zhang Yichao 1, Wang Ying 1, Zhou Jinghai 1, Liu Jiaxi 1 and Li Tong 1. Published under licence by IOP Publishing Ltd ... Firstly the basic characteristics of Flue-gas-desulfurization gypsum (FGD gypsum) is described in this paper. Then the research status of FGD …
In this study, we propose a process making calcium carbonate and calcium sulfate and recovering absorbent using ammonia absorbent, carbon dioxide, and industrial waste. The main objective of this study is to confirm the possibility of carbon capture and utilization based on waste materials. We assumed desulfurization gypsum and …
A large number of coal-fired flue gas is the culprit that caused by air pollution and acid rain. Based on this reason, lime/limestone-gypsum wet flue gas desulfurization(FGD) process as the main desulfurization technology are used by most countries to control emissions of SO2,at the same time generating a huge amount of flue gas desulfurization gypsum...
To effectively solve the problem of recovery and utilization of flue gas desulfurized gypsum (FGDG), a new method for preparing SO2 gas by adding a mixture of FGDG and pyrite into a boiling furnace and utilizing its high-temperature waste heat is proposed. Using the FactSage 6.1 Reaction module and the Equilib module, the …
DOI: 10.1016/j.jece.2024.112356 Corpus ID: 268224525; Resource utilization of semi-dry flue gas desulfurization ash by thermal treatment on sintering machine @article{Liu2024ResourceUO, title={Resource utilization of semi-dry flue gas desulfurization ash by thermal treatment on sintering machine}, author={Lincheng Liu …
Introduction. In the industrial production of China, the processing of phosphate rock, volcanic eruptions, kerosene combustion and aluminum smelting will lead to flue gas emissions containing a large amount of SO 2.SO 2 is a highly irritating gas. Because SO 2 is freely soluble in water and enters the respiratory tract, it can generate …
Our findings suggest that end-of-pipe abatement technology can diffuse fast and to a great extent provided deep, consistent long-term regulatory commitment.
Gypsum–urea is a kind of urea product with substantially reduced aqueous solubility and lower hygroscopicity that increases the soil retention time of urea and thus enhance its environmental sustainability. Here, gypsum–urea was prepared using bulk industrial solid waste flue gas desulfurization (FGD) gypsum as a raw material in a …
The 11 major electricity-generating coal combustion stations in the northern Great Plains have the potential to produce almost 1 million Mg of flue gas desulfurization gypsum (FGDG) annually, which is a …
"Going forward, importing countries will be increasingly looking to the Sultanate of Oman to meet their gypsum requirements. At the current rate of growth in exports, Oman's share is projected to rise to around 48 - 50 per cent of demand, which equates to over 130 million MT over the 2022- 2031 timeframe."
The total annual coal production in China is about 4 billion tons, resulting in a huge amount of CSWM generated in the process of coal development and utilization [].These materials include coal gangue (CG), fly ash (FA), desulfurization gypsum (DG), gasification slag, and bottom ash [].The issues associated with the disposal of these …
Carbon capture, utilization, and storage (CCUS) technologies are being developed to address the increasing CO2 emissions, mitigating the global warming and climate change. In this context, chemical precipitation has been advanced to enhance the performance, energy-efficiency and profitability of CCUS. In this review, we first present …
Soil salinization has progressed rapidly in northeastern and western China. In addition, air pollution is one of the most serious environmental problems. To alleviate the problems of soil salinization, food shortages, and air pollution, we have studied the amelioration of salt-affected soil using the by-products of flue gas desulfurization …
The utilization of RO along with ED/EDR overcomes the limitation of low salinity in RO and reduces energy consumption in comparison to the conventional system using a brine concentrator. ... the use of the Wurster fluidized bed as a novel drying technology for the treatment and drying of wet limestone/gypsum flue gas …
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), …
Post-combustion flue gas desulfurization and denitrification technologies are essential in achieving the full compliance of fine particulate matter (PM2.5, aerodynamic diameter less than 2.5 μm) air quality standards by 2030 in China as sulfur dioxide (SO2) and nitrogen oxides (NOX) are the main precursors of PM2.5. …
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
Purpose Soil salinization is a major obstacle to the development and utilization of land resources in coastal areas. The purpose of the study is to explore the desalting effect of flue gas desulfurization gypsum (FGDG) on coastal saline-sodic soils by evaluating changes of soil chemical properties (soluble ions, exchangeable cations, …
With emission control becomes more and more stringent, flue gas desulphurization (FGD) is commonly employed for desulfurization. However, the …
The large‐scale accumulation of industrial by‐product gypsum has led to land embezzlement and serious environmental pollution. Meanwhile, as a predominantly used nitrogen fertilizer, urea shows a disadvantage of high solubility in soil. Therefore, it can hydrolyze into large amounts of ammonium salts so rapidly that cannot be absorbed …
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.In order to study the effect of different dosage of desulfurization gypsum on the improvement of saline-alkali land, field experiments were carried out in Duiziliang …
Flue gas desulfurization gypsum (FGDG) is a coal combustion by-product that can be used in various beneficial ways. This review summarizes the recent …