Wet flue gas desulfurization was simulated to improve gypsum production using low-grade limestone. High-grade limestone with 94 wt% CaCO3 content is used for producing gypsum with 93 wt% purity, but owing to the resource depletion of high-grade limestone, low-grade limestone should be replaced as an alternative. However, low …
In this paper, chemical precipitation process is used for the treatment of the desulfurization wastewater generated by the waste gas treatment system of the limestone-gypsum flue gas ...
Taking 1 flue gas desulfurization (FGD) site in Taiyuan Second Thermal Power Plant (TSTPP) as an example, the authors respectively deduced the models of technical performance indexes including SO2 removal efficiency and outlet SO2 concentration and the models of economical performance indexes including limestone …
Flue gas desulfurization (FGD) is the removal process of sulfur dioxide from flue gases.It consist of Absorber,Gypsum dewatering and Limestone preparation..
Low-grade limestone with relatively low calcium (Ca) content is an alternative to high-grade limestone for wet flue gas desulfurization (WFGD). This paper presents an experimental study on the diss...
The flue gas desulfurization (FGD) plant removes sulfur dioxides (SO 2) from flue gas produced by boilers, furnaces, and other sources. Mitsubishi Power effectively contributes to the prevention of air pollution through its wet limestone-gypsum FGD process and seawater FGD process, ...
A desulfurization reaction was performed in bubbling reactor to investigate the effect of six different organic acid additives on improving desulfurization in the limestone slurry. The characteristics of the desulfurization process and its byproducts were compared for each organic acid.
A novel process using red mud-limestone slurry as composite absorbent for flue gas desulfurization, which has better absorption ability to SO 2 in flue gas.. The process was applied in a pilot test of a demonstration project, which provided a theoretical basis for engineering application.
In this study, a promising approach of employing low-grade limestone with different particle sizes as absorbent in wet flue gas desulfurization technique was …
Therefore, in this paper, the application of natural ultrafine limestone, with a Sauter mean diameter of less than 20 μm, was tested by conducting bench-scale, pilot-scale, and commercial-scale experiments to realize highly efficient desulfurization in CFB furnaces. In the past, such small-size limestone was considered unsuitable for CFB …
This study indicates that red mud from alumina plant is a favorable additive for improving the desulfurization performance of limestone, and the effect of red mud on limestone's desulfurization activity is due to superposition of improvement in solid-state ionic diffusion and surface chemical reaction.
A sequential batch procedure for measuring the reactivity of flue-gas desulfurization (FGD) limestone absorbents by means of neutralization with a strong acid is presented in a previous work.
Stricter environmental regulations are forcing many utilities to install flue gas desulfurization (FGD) systems to control sulfur dioxide (SO2) emissions below levels that can be attained by ...
The Thermo ScientificTM ARLTM QUANT'X Energy-Dispersive X-ray Fluorescence (EDXRF) Spectrometer is used to control the quality of limestone used for flue gas …
Special attention is required on the fine particle control after desulfurization because a large quantity of fine particles are emitted into the atmosphere from the coal-fired power plants. In an attempt to figure out the transformation of fine particles during the limestone gypsum desulfurization, the physical properties of fine particles before and after the …
A detailed process model of the wet limestone flue gas desulfurization system has been presented. This model can be used to calculate indispensable parameters for estimating costs and next to minimize capital and operating costs. The process model describes most important stage of SO2 removal running in an absorber and a holding …
Flue gas desulfurization (FGD) is a critical process for reducing sulfur dioxide (SO2) emissions from industrial sources, particularly power plants. ... such as limestone (calcium carbonate ...
This study investigated that status of domestic and international furnace desulfurization and desulfurization characteristics of limestone for fluidized bed use depending on the technology...
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, chemical and physical properties, FGDG has …
Adding 10-30 mmol/L acetic acid, degree of desulphurization was increased to 95% and the limestone utilization was enhanced to 93.5%, comparison with fine limestone, the …
process red mud) from alumina plant on desulfurization performance and microstructure of limestone, in order to explore the factors to affect modified limestone's desulfuri-zation activity and get an optimal approach to improve desulfurization property of sorbents. Kinetics of calcination and sulfation are also carried out a preliminary ...
Limestone dissolution in flue gas desulfurization-experimental and numerical study. Journal of Chemical Technology & Biotechnology 2010, 85 (9), 1208-1214. DOI: 10.1002/jctb.2418.
This paper presents a general review of the Flue Gas Desulphurisation (FGD) technologies used to abate sulphur emissions from coal-fired power plants, and exposes the major physic-chemical processes occurring during wet limestone FGD.
The Thermo Scientific™ ARL™ QUANT'X Energy-Dispersive X-ray Fluorescence (EDXRF) Spectrometer is employed in quality control of limestone used in coal-fired power plants to perform flue gas …
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. ... Limestone-forced oxidation (LSFO), limestone-inhibited oxidation (LSIO), jet bubbling reactor (JBR), lime process, magnesium-enhanced lime (MEL), dual alkali ...
Download Citation | Desulfurization characteristics of limestone slurry with added organic acid | In this study, a desulfurization experiment was performed in a bubbling reactor to investigate the ...
The ultrafine limestone, with Sauter mean diameter of less than 20 μm, was tested by conducting bench-scale, pilot-scale and commercial-scale experiments to realize the highly efficient desulfurization in CFB furnaces and a technical roadmap was drawn for the cost-effective control of SO2 emission. With the stringent emission regulation taking …
Owing to the advantages such as a high desulfurization efficiency and proper adaptation to various types of coal, wet flue gas desulfurization (WFGD) has been widely adopted. More than 80% of …
The emissions from coal power plants have serious implication on the environment protection, and there is an increasing effort around the globe to control these emissions by the flue gas cleaning technologies. This research was carried out on the limestone forced oxidation (LSFO) flue gas desulfurization (FGD) system installed at …
Examples are illustrated here in relation to limestone dissolution taking place within the Wet Flue Gas Desulfurization process, where calcium carbonate is dissolving in an acidic environment. The method is the most common used technology to abate SO2 released by fuel combustion. Limestone dissolution plays a major role in the …