Nowadays, the wet flue gas desulfurization (WFGD) system has been appreciated by many commercial companies due to the fact that it can purify the flue gas with high SO 2 removal efficiency, simple structure, and low costs [1].In the WFGD system, horizontal flue gases interact with vertical slurry generated by sprayers or bubble generators [2].The WFGD system …
Desulfurization and denitrification performances of modified absorbents in the full temperature range (300-900 • C): (a) NO conversion as a function of the temperature (300-900 • C) of the ...
desulfurization time is 11.67days, the desulfurization effect is the best, and the removal rate of inorganic sulfur can reach 79.78%, which is close to the predicted value, and the regression ...
In quest of a substantial reduction in potentially toxic gas emissions into the air from industrial plants, dry flue gas desulfurization (FGD) systems offer several advantages, such as …
The main challenge of adsorption desulfurization technique is to fabricate sorbents with high adsorption capacity. It has been reported that a variety of porous sorbents, including zeolites [16], [17], metal–organic frameworks [20], [21], activated carbon [22], [23], silica [24] and alumina [25], have been utilized to remove thiophene.Among them, zeolites have been widely …
To reduce the harm caused to the environment by fuel combustion and meet the increasingly stringent emission standards, the sulfur content of fuels should be reduced. Dibenzothiophene, benzothiophene, and their derivatives are sulfur-containing components of fuels that are difficult to desulfurize and can therefore cause great environmental damage. …
The iron-mediated efficient multi-component method has been demonstrated for the synthesis of substituted cyanamides from isothiocyanates under mild reaction conditions. Subsequent nucleophilic addition and desulfurization are involved in this proposed synthetic methodology. All the reactions are rapid, facile, and accomplished at room temperature. A …
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 …
Extractive desulfurization, also called liquid-liquid extraction, is a method based on selecting a suitable solvent that dissolves more sulfur compounds than hydrocarbons.
Special attention was focused on the used components, rubber treatment conditions and static mechanical properties of reclaimed rubbers. ... the ASTM D6370 allows quantitative determination of: organics (oil, polymer), carbon black + ash, and seems to be the best method for GTR composition assessment. ... In next step, desulfurization of the ...
tBiotrickling filters for biogas desulfurization still must prove their stability and robustness in the longrun under extreme conditions. Long-term desulfurization of high loads of H2S under ...
Select the best conditions for reagent 1. Both acid or base in water and heat will work. No catalyst is needed and water will work by itself. Only HO-,HO and heat, followed by acid workup will work. Only H+,H,O and heat will work. Step 5: Identify the reagents to convert the carboxylic acid to the ester. OH The reagents are: OH, CH, OH OCH OCH ...
The experimental results of PTA@UiO-66 with different PTA loadings for adsorption of model oil with a sulfur content of 500 ppm are shown in Fig. 1.When the loading of PTA was 40%, the maximum adsorption capacity of TH was 80.1 mg·g −1 under the conditions of adsorption temperature of 30 ℃, model oil of 10 ml, adsorbent of 0.07 g, and adsorption time …
The best conditions for desulfurization were 8% H 2 O, an outlet temperature of 60–65 °C, and a C/S molar ratio of 80 [72]. C.Y. Chu et al. used an internal circulating fluidized …
best conditions for preparing a combined desulfurization and denitrification catalyst to provide a theoretical basis for the synergistic removal of multiple pollutants in an electrostatic
Suggested Citation:"11 Flue Gas Desulfurization."National Research Council. 1975. Air Quality and Stationary Source Emission Control.Washington, DC: The National Academies Press. doi: 10.17226/10840.
When the temperature is 29.50°C, the coal size is 100 mesh, and the desulfurization time is 11.67 days, the desulfurization effect is the best, and the removal rate of inorganic sulfur can reach ...
We analyzed the main variables and optimum conditions for safe FGDG reuse. Flue gas desulfurization gypsum (FGDG) is an industrial by-product generated during the flue gas …
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 ...
Grillo [20] performed different experiments of steel desulfurization with slags containing CaO, Al 2 O 3, Fe 2 O 3, MgO, MnO, SiO 2, and CaF 2.His work showed that the fraction of liquid and solid phases has a direct relationship with desulfurization efficiency. The author concluded that increasing the amount of liquid phase favored sulfur mass transport in …
Furthermore, the associated technologies influencing the deep photocatalytic oxidative desulfurization performances have been identified and significant parameters for the process optimization are ...
Using CO, H 2, and CH 4 as reducing agents can effectively reduce SO 2 and NO x in flue gas. Catalytic ozone was combined with NH 3 / (NH 4) 2 S 2 O 8 to complete the …
The adsorption desulfurization performance of Mod-UiO-66@(IL1) for different sulfides was studied under the optimal adsorption conditions. ... -UiO-66@(IL1) prepared by using IL containing bis-COOH was successfully synthesized. The research results indicated the best conditions for the adsorption process: the amount of adsorbent was 1 g, the ...
The desulfurization and denitrification wastewater (DDW) from the wet flue gas treatment project is difficult to be treated and recycled because of high chloride ion (Cl −) concentration.Cl − can cause equipment and piping corrosion. However, there is a lack of cost-effective treatment technologies for the removal of Cl − from the DDW. In this research, the …
The AY-110 min-Ca(OH) 2 sample still retained the best desulphurization performance with a permeation time of 158.3 min and a sulfur capacity of 142.44 mg/g at 150 °C. In comparison to the desulfurization test conducted without CO 2 atmosphere, the permeation time is reduced by 79.6 min and the sulfur capacity is decreased by 78.56 mg/g.
Then, the effects of reaction conditions on desulfurization performance were systematically studied and the recycling experiments of the as-prepared heterogeneous catalysts have also been carried out. The radical scavenger experiments have been conducted, and combining the result of chromatography, a possible desulfurization mechanism has been ...
The effects of a series divalent metals, ratios of metals, and calcination temperature on the performance of simultaneous desulfurization and denitrification over the hydrotalcite-like compound (HTLC) catalyst were investigated, and the removal mechanism of HTLCs was characterized by X-ray powder diffraction (XRD), Brunauer–Emmett–Teller (BET) surface …
Due to the most recent environmental requirements, wide desulfurization has become an increasingly important way to obtain ultra-clean fuels for transportation of less than 15 ppmw of sulfur, such ...
The conventional hydrodesulfurization (HDS) technique is not widely adopted due to certain limitations such as higher cost, increased consumption of electricity, enhanced hydrogen creation and noble catalyst consumption. A promising alternative to HDS is the extractive desulfurization (EDS) process due to its mild operating conditions.
The oxidative desulfurization of dibenzothiophene (DBT) in n-octane as model oil with Brönsted acidic ionic liquids N-methyl-pyrrolidonium phosphate ([Hnmp]H 2 PO 4) as catalytic solvent and H 2 O 2 as oxidant was optimized by orthogonal experiments. 99.8% of DBT in the model oil was removed under the optimal conditions of molar ratio of H 2 O ...
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