Synergistic Desulfurization Performance of Industrial Waste …

Therefore, the guard bed desulfurization process using desulfurization absorbents is needed to purify the hydrogen. Various types of absorbents, such as activated carbon, metal oxides, and zeolites, have been studied extensively. Activated carbon is used widely as an adsorbent for sulfur compounds, such as dibenzothiophenes and 4,6 ...

The effect of particle size on removal of SO2 from flue gas …

In this study, the dissolution kinetics and desulfurization mechanism of LGL absorbents induced by particle size were investigated. Shrinking core kinetic model (SCKM) was employed to study the ...

Cobalt-zinc oxide absorbents for low temperature gas …

The hydrogen sulfide absorption capacity of a series of cobalt-zinc oxides with nominal Co/Zn atomic ratios of 0/100, 10/90, 20/80, 30/70, 40/60, 50/50, 70/30, 90/10 and 100/0 was …

Wet flue gas desulfurization using alkaline agents

Abstract The continued great dependency on fossil fuels entails increasing SO2 emissions to the atmosphere, with damaging consequences to both the local environment and the global climate. Thus, during the last years, the tightening of emission control policies has fostered the research over more efficient and sustainable removal technologies. The aim of this review …

Cobalt-zinc oxide absorbents for low temperature gas …

The hydrogen sulfide absorption capacity of a series of cobalt-zinc oxides with nominal Co/Zn atomic ratios of 0/100, 10/90, 20/80, 30/70, 40/60, 50/50, 70/30, 90/10 and 100/0 was determined using a continuous flow absorption apparatus. The reaction of the mixed oxides with H 2 S amounted to ca. 3 monolayers, and is therefore largely confined to the surface of the oxides. …

Desulfurization and Denitrification Performance of …

Dry-process absorbents include calcium-based absorbents, calcium-based fly ash absorbents, natural manganese ore, activated carbon, activated carbon impregnated catalysts and metal catalysts. In order to synthesize an absorbent with high desulfurization and denitrification activity, silicon raw materials usually need to be activated by CaO or ...

Utilization of CFBC Fly Ash as a Binder to Produce In-Furnace

These absorbents were then compared in terms of desulfurization efficiency using a high-temperature fluidized bed reactor. It was confirmed that the desulfurization absorbents fabricated using ...

Reversible sulfur dioxide capture by amino acids containing …

SO2, an air pollutant, is harmful to human health and causes air pollution; therefore, numerous studies have focused on the development of SO2 control technologies. Although limestone- and ammonia-based absorbents have been widely used in wet desulfurization, they are difficult to regenerate and do not enable the recycling of SO2, which …

Novel desulfurization technology by employing coal …

To evaluate the desulfurization performance of coal gangue slurry, the influence of various process parameters on the SO 2 absorption efficiency was investigated, and the results are demonstrated in Fig. 1. The dosage of absorbents is one of the key factors in evaluating the feasibility of desulfurization methods.

What is Flue Gas Desulfurization?

About the author: Cristina Tuser is associate editor of WWD. Tuser can be reached at [email protected].. What is the Flue Gas Desulfurization Process? Flue gas desulfurization is the process of removing sulphur compounds from the exhaust emissions of fossil-fueled power stations. This is done through the addition of absorbents, which can remove up to 95% of the …

Application of Ca-based adsorbents in fixed-bed dry flue …

desulfurization and demonstrated the possible solutions. It is benecial to promote industrial application by improving the ... absorbents and FGD technology. However, there are rela-tively few empirical studies on a detailed outline of Ca-based …

New Adsorption Materials for Deep Desulfurization of Fuel Oil

Adsorption desulfurization technology has attracted wide attention due to its advantages of energy saving and low operating cost. This paper reviewed the latest research progress on various …

New Cu 2 O-SiO 2 Composite Aerogel-like Desulfurization …

Request PDF | New Cu 2 O-SiO 2 Composite Aerogel-like Desulfurization Adsorbents with Different Molar Ratio of Si/Cu Based on π-Complexation | Cu2O-SiO2 composite aerogel-like adsorbents with ...

Advances in absorbents and techniques used in wet and dry …

Sulfur dioxide is considered as an extremely harmful and toxic substance among the air pollutants emitted from the lignite- and other high-sulfur-coal based power plants, old tires processing units, smelters, and many other process industries. Various types of absorbents and desulfurization technologies have been developed and adopted by the industries to reduce the emission rate …

The effect of particle size on removal of SO2 from flue gas …

MgO slurry become more and more important in wet desulfurization process because of high desulfurization activity and recyclable by-products. While the removal of SO 2 by micron-sized MgO slurry is limited due to particle size. Hence, micro-sized MgO slurry and MgO nanofluids of the same concentration were prepared. The stability of MgO nanofluids had been …

Preparation of high-reactivity Ca-based SO2 adsorbent and …

Desulfurization tests were conducted to determine the optimal reaction conditions of the adsorbent and carry out XPS and SEM-mapping characterization to clarify the distribution of the reacted products. 2. Material and methods2.1. ... BET Analysis of the absorbents. It can be seen that the specific surface area modified by ethanol and LGS-Ca ...

Preparation of Activated Carbon Loading Nano-ZnO and Desulfurization …

When the mixing time of nano-ZnO and activated carbons is 2h and the mass ratio of ZnO and C is 0.3, the breakthrough time of desulfurization is the longest, which can last 110min. Meanwhile, the activated carbons loaning nano-ZnO can achieve the most effective desulfurization activity.

Enhancement of citric acid on low-grade limestone wet desulfurization …

Developing low-grade limestone as absorbents has been recognized as a prerequisite for industrial application of wet flue gas desulfurization (WFGD) due to the serious depletion of high-grade limestone for SO 2 capture. In this research, citric acid was utilized as additive in order to improve the SO 2 removal efficiency of low-grade limestone. The …

Studying the mechanism and kinetics of fuel desulfurization …

Desulfurization process by using piezo catalyst. In a Pyrex cell, 50 mg of piezocatalyst was used to oxidative desulfurize the model fuel and 25 mL of model fuel (TP or dibenzothiophene (DBTP)/n ...

% Desulfurization with different absorbents in …

Download scientific diagram | % Desulfurization with different absorbents in kerosene and diesel oil. from publication: Adsorptive Desulphurization of Kerosene and Diesel Oil by Zn impregnated ...

Enhanced desulfurization performance of copper aerogel-based absorbents

Further desulfurization tests showed that freeze-dried copper aerogel had the highest sulfur capacity (12 mgS/g-sorbent) at a low temperature of 200 °C. This enhancement was driven by two factors.

REMOVAL OF SULFUR DIOXIDE FROM FLUE GAS …

Absorbents for dry flue gas desulfurization were prepared from calcium oxide, coal fly ash and. calcium sulfate using steam and water hydration. The effect of various absorbent preparation.

Review of adsorptive desulfurization process: Overview of …

Adsorptive desulfurization of non-carbonaceous materials is reviewed. Zeolites, MOFs, clay, mesoporous silica and metal-modified adsorbents are greatly discussed. Relation …

Spray drying absorption for desulphurization: a review of …

Sulphur dioxide (SO2) abatement technologies, i.e. flue gas desulphurization (FGD), have proven effective in curtailing the harmful SO2 emissions resulting from coal combustion for electrical power generation. New regulations on these emissions now require some power utilities to retrofit new FGD units to existing coal-fired power plants to meet …

Deep desulfurization of natural gas by a commercial ZnO …

The desulfurization reactor contains an adsorbent bed of zinc oxide, providing the primary source of sulfur capture from the feed gas. The amount of hydrogen sulfide at the reactor outlet must be less than 0.1 ppm. In order to ensure continuous operation of the unit, two parallel reactors have been utilized. ...

Review of the adsorbents/catalysts for the removal of sulfur …

These systems could benefit from more research on the development of new absorbents, and catalysts for more cost-effective operation. Amines and sodium hydroxide have been utilized as absorbents for the removal of sulfur compounds, especially mercaptans, from natural gas ( Anyanwu et al., 2021 ; Huang et al., 2003 ; Kazemi et al., 2014 ...

Advances in absorbents and techniques used in wet and …

Various types of absorbents and desulfurization technologies have been developed and adopted by the industries to reduce the emission rate of SO 2 gas. The present paper focuses on the ongoing ...

Desulfurization and Denitrification Performance of Modified Rice …

In the cement industry, SO2 and NOx are generally removed separately. There are many problems, such as large area, high investment cost, secondary pollution and so on. Desulfurization and denitrification technology have become a frontier research direction in the field of air pollution control. In this paper, rice husk ash and carbide slag were compounded and …

Desulfurization and Denitrification Performance of Modified …

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 ...

Modified zinc oxide absorbents for low-temperature gas …

DOI: 10.1039/FT9928803375 Corpus ID: 93210301; Modified zinc oxide absorbents for low-temperature gas desulfurisation @article{Baird1992ModifiedZO, title={Modified zinc oxide absorbents for low-temperature gas desulfurisation}, author={Thomas Baird and Patrick J. Denny and Robert Hoyle and Fiona A. McMonagle and Diane Stirling and James Tweedy}, …

Insights into the desulfurization mechanism of low-grade …

As part of ongoing efforts to develop low cost and high efficient alternative absorbents for SO 2 controlling, several investigations on desulfurization slurries prepared with the alkali-rich compounds including the alkaline solutions of NaOH [13], Ca(OH) 2 [14] and sea water [15] as well as the solid slurry of red mud [16], steel slag slurry [17] and fly-ash [18] have …

flue gas desulfuration system | high efficiency …

The wet flue gas desulfurization machinery can fully utilize industrial alkaline wastewater or slag water, as well as boiler discharge wastewater, as desulfurization absorbents. This not only saves energy but also prevents secondary pollution, meeting the requirements for the construction of a "resource-saving and environmentally friendly ...

Alkaline absorbents for SO2 and SO3 removal: A

Alkaline absorbents are typically employed in industry to treat acidic gas molecules, such as SO 2 and SO 3 in flue gas. The use of alkaline absorbents often necessitates selection according to specific processes. Flue gas desulfurization commonly employs wet, semi-dry, and dry methods (Li et al., 2022).

Advances in absorbents and techniques used in …

In this study, the organic component enhances the simultaneous desulfurization and denitration performance of MgO from three aspects and is verified by different characterization tests.

Desulfurization of natural gas using industrial absorbents …

Journal Article: Desulfurization of natural gas using industrial absorbents based on zinc oxide ... distribution of sulfur in the granules as well as the effect of desulfurization conditions on sulfur capacity and process rate are discussed. Pelleting of the granules was carried out on a Perfekt-III industrial machine of the Fette firm.

Insights into the desulfurization mechanism of low-grade …

Considering the desulfurization capacity of CaMg(CO 3) 2, the utilization of low-grade limestone (LGL) as absorbents for WFGD industry is particularly promising which can …

Flue Gas Desulfurization in a Fixed-Bed Reactor: Mild …

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 reduced …

Desulfurization of natural gas using industrial absorbents …

The removal of sulfur compounds from natural gas occupies an important place in a number of technological processes, including the production of ammonia and methanol. The influence of the conditions for pelleting granules of a zinc oxide absorbent on its pore structure, distribution of sulfur in the granules as well as the effect of desulfurization conditions on sulfur capacity and …