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.
Flue-gas desulfurization (FGD) is a set of technologies used to remove sulfur dioxide (SO 2) from exhaust flue gases of fossil-fuel power plants, and from the emissions of other sulfur oxide emitting processes (e.g trash incineration
The spent absorbents after the desulfurization activity were tested using FTIR analysis and the spectrum are shown in Fig. 3a–3d. Download : Download full-size image; Fig. 2. Desulfurization activity of the absorbent derived from fly ash/CaO at various concentration of NO and O 2.
Mar 15, 2019· In a word, the composition of silica with 3DOM structure was an outstanding candidate for mid-high temperature gas desulfurization due to its special textual properties. At the same time, the desulfurization performance of 3D-50ZS was also compared with that of 3D-50ZFS, as shown in Fig. 8.
Jan 30, 2014· Abstract. Desulfurization of natural gas is achieved commercially by absorption with liquid amine solutions. Adsorption technology could potentially replace the solvent extraction process, particularly for the emerging shale gas wells with production rates that are generally lower than that from the large conventional reservoirs, if a superior adsorbent (sorbent) is developed.
Therefore, desulfurization of H 2 S at low temperatures needs to be studied to find a new solid sorbents. The present study shows that sorbent containing cobalt oxide can be a good candidate, working at temperature range, 300– 500 ∘ C. The desulfurization reactivities of sorbents were tested with pack-bed microreactor and in situ TGA.
Adsorbents are used usually in the form of spherical pellets, rods, moldings, or monoliths with hydrodynamic diameters between 0.5 and 10 mm. They must have high abrasion resistance, high thermal stability and small pore diameters, which results in higher exposed surface area and hence high surface capacity for adsorption.
Abstract. This article presents the results of testing many commercially available and some experimental sulfur adsorbents. The desired result of our testing was to find an effective method to reduce the quantity of sulfur in natural gas to less than 100 ppb volume (0.1 ppm volume).
Because the absorbents lime and ammonia are readily available and the product of the wet process is easily used or disposed of, this process is now employed by over 90% of all desulfurization plants worldwide. The picture provides a simplified flowchart of such a plant, in this case the two-stage KRC flue gas desulfurization process.
Haiwang FXDS hydrocyclone station for desulfurization is widely used for classification of desulfurization absorbents such as limestone and carbide slag, condensation and dewatering of desulfurization products, classification and condensation of …
A novel absorbent sodium lactate (NaLa) aqueous solution (aq) for SO2 absorption is reported. SO2 in simulated flue gas is reversibly absorbed in NaLa aq. The absorption capacity of SO2 in the absorbent increases with increasing NaLa content and SO2 concentration, and decreasing temperature. Compared with the absorbents reported in the literature, the absorption capacity of SO2 in NaLa aq. is ...
Request PDF on ResearchGate | Desulfurization Behavior of Fe-Mn-Based Regenerable Sorbents for High-Temperature H2S Removal | A series of Fe-Mn-based sorbents with …
Binary Cu−Cr−O and Cu−Ce−O oxides were studied in this work as regenerable sorbents for high-temperature fuel gas desulfurization. CuO−Cr2O3 and CuO−CeO2 sorbents can remove H2S from simulated coal-derived fuel gas to less than 5−10 ppmv in the temperature range of 650−850 °C. The presence of stable CuCr2O4 in CuO−Cr2O3 solids retains some copper in the Cu2+ or Cu1 ...
The wet flue gas desulfurization is considered to be technologically, environmentally, and economically feasible . To reduce the investment of wet flue gas desulfurization system as well as the expenses of operation and maintenance, good desulfurization absorbents …
SulfaTrapTM Sorbents are developed to remove sulfur from various fuel streams including natural gas, LPG, biogas, biofuels, propane, logistics fuel, reformate gas and diesel fuel.
Development of Advanced Hot-Gas Desulfurization Sorbents Quarterly Report April - June 1995 K. Jothimurugesan Adeyinka A. Adeyiga Santosh K. Gangwal ... The specific objective in the successful preparation of H2S absorbents will be to generate as high and as stable a surface area as possible, in order to develop suitable sorbent, ...
226 Efficiency of Al and Cu Addition in ZnO Sorbents for Desulfurization temperature range of 500-700°C (Ko et al., 2005). Among these, Mn /γ-Al 2O 3 exhibited the highest sulfur capacity after desulfurization. However, ZnO is the most attractive absorbent material due to its high sulfur sorption capacity and its breakthrough performance ...
New nanostructured sorbents for desulfurization of natural gas Article in Frontiers of Chemical Science and Engineering 8(1):8-19 · March 2014 with 20 Reads How we measure 'reads'
27 Review of H2S Sorbents at Low-Temperature Desulfurization of Biogas  Cosoli, P., Ferrone, M., M.Pricl, S., and Fermeglia, M. Hydrogen  Karge, H. G. and Raskó, J. Hydrogen sulfide adsorption on sulphide removal from biogas by zeolite adsorption: Part I. GCMC faujasite-type zeolites with systematically varied Si-Al ratios.
Dec 27, 2012· The adsorptive desulfurization method, mechanism, absorbents and absorbents regeneration were reviewed. According to adsorption mechanism, a series of adsorbents such as zeolite,activated carbon,metal oxide and composite metal oxide, clay, and research of their absorbability were introduced. Some suggestions to further research of adsorptive ...
In a flue gas desulphurisation system (FGD), sulphur compounds are removed from the exhaust emissions of fossil-fuelled power stations.This is done by means of an industrial process through the addition of absorbents. This can remove up to 95 % of the sulphur dioxide from the flue gas, since the current threshold value for SO 2 in the EU is 200 mg/Nm 3 (Nm 3 = normal cubic metre).
Dry Injection Desulfurization. environmentally safe low cost dry absorbents. no seawater or washwater. zero overboard discharge. no dry dock or structural renovations. 80% savings on equipment and installation costs. payback of less than 6 months
Saint-Gobain is a leading producer of Ceramic Media for such uses as microgrinding, supporting fixed catalyst beds in refinery hydroprocessing applications, and natural gas processing and desulfurization. Our media supports proppants, absorbents, molecular sieves, and silica gel, as well as catalyst carriers used in desulfurization of sour feedstreams.
Feb 27, 1996· Durable zinc-oxide containing sorbent pellets for removing hydrogen sulfide from a gas stream at an elevated temperature are made up to contain titania as a diluent, high-surface-area silica gel, and a binder.
The vapor pressure of sulfur dioxide above aqueous solutions of citric acid, glycolic acid, 1-methyl-2-pyrrolidone, and ethylenediamine, as well as above pure tri-n-butyl phosphate, 1-methyl-2-pyrrolidone, and water were measured for possible application as absorbents for regenerable flue gas desulfurization systems.
Along with the fact that the emission standard of NO X and SO 2 is more and more rigorous, the development of novel technologies for simultaneous desulfurization and denitrification of sintering flue gas will be another challenging and urgent issue following the flue gas treatment of power plant .
The SNOX process is a very energy-efficient way to convert the NOx in the flue gas into nitrogen and the SOx into concentrated sulfuric acid of commercial quality without using any absorbents and without producing waste products or waste water.