Abstract. Post-combustion flue gas desulfurization and denitrification technologies are essential in achieving the full compliance of fine particulate matter …
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The elemental sulfur (S(0)) recovery was evaluated in the presence of nitrate in two development models of simultaneous desulfurization and denitrification (SDD) process.
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Separate treatment units would increase treatment costs. Single reactor with both SR and SO, or termed the integrated simultaneous desulfurization and denitrification (ISDD) process, is welcome in applications (Sahinkaya et al., 2011, Ontiveros-Valencia et al., 2012, Zhao et al., 2013, Jiang et al., 2013, Xu et al., 2013a).
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Traditional Fenton reaction can hardly achieve the simultaneous desulfurization (de-SO 2) and denitrification (de-NO x) for the cement kiln exhaust gas, due to the low production of free radicals as the limited Fe 2+ /Fe 3+ cycle. Herein, an enhanced Fenton oxidation process was developed to remove SO 2 and NO x …
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Carbon nanotubes are a promising adsorbent for desulfurization and denitrification. In this paper, Cu- and Cr-doped TiO2 supported by multi-walled carbon nanotubes (MWCNTs/Cu-Cr-TiO2) …
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Bio-desulfurization and denitrification by anaerobic-anoxic process for the treatment of wastewater from flue gas washing Water Sci Technol. 2013;67(9) :2042-9. doi ... In this study, a novel anaerobic-anoxic process was built up for the treatment of this washing wastewater. Nitrate was reduced to nitrogen by denitrifying bacteria.
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desulfurization technologies employed in refineries has intensified. In today's refineries, hydrotreatment is the conventional method used for the removal of sulfur and its derivatives via the process commonly referred to as hydrodesulfurization (HDS).5 It is a catalytic process that uses cobalt molybdenum or nickel
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Enhancing simultaneous desulfurization and denitrification efficiency of cement kiln exhaust gas via co-catalytic Fenton oxidation process October 2023 Journal of Cleaner Production 426(19):139105
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Sulfur dioxide emissions from fossil fuel combustion have been known to cause detrimental health and environmental effects. The currently used hydrodesulfurization (HDS) method employed by refineries has several drawbacks, such as excessive hydrogen consumption, high energy demand, and inability to remove complex organosulfur …
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The experimental results indicated that the desulfurization process was mainly controlled by the sodium humate (HA-Na) absorption, while the denitrification was significantly affected by various ...
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This paper introduces the principle of desulfurization technology, denitrification technology and red mud in desulfurization technology and …
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Research progress of flue gas desulfurization and denitrification technology in coal-fired power plants Minghui Tang a,*, Shuping Tu and Wenzhe Sun School of Merchant Marine, Shanghai Maritime University, Shanghai 201306, China ... desulfurization process needs to use high purity and active lime as desulfurizer, and the ...
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Therefore, desulfurization and denitrification are extremely urgent. Many technologies have been developed and applied. Our paper introduces mature and new flue gas denitration and desulfurization technologies along with their processing principles, industrial status, merits, and demerits. ... We process personal data collected when …
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Desulfurization and denitrification technology is not mature yet [14], [17], and most of them are still in the stage of laboratory research. Compared with traditional desulfurization and denitrification technology, there are also some problems, including: The denitrification efficiency is generally low [18]. ... The experiment process of ...
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Finally, the desulfurization-regeneration-denitration test (imitated activated coke simultaneous desulfurization and denitrification process) was carried out, and the results confirm that the prepared PEG/Ti catalyst could be regenerated for denitration after desulfurization. We expect that this work can provide some guidance for the design of ...
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An integrated and effective method to realize simultaneous desulfurization and denitrification by the Spray Dryer Absorption (SDA) method combined with the NaClO 2 was carried out in this paper. The optimum conditions on desulfurization were verified, as well as the cooperative effect and removal mechanism between SO 2 and NO was …
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Based on these special physiological characteristics, an innovative process of simultaneous desulfurization and denitrification (SDD) was developed to obtain sulfur from sulfide. A strain of T. denitrificans, named D(4), was isolated and used as sulfur producers in this study. ... The key factors affecting this process were investigated …
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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 as diesel, gasoline, and jet fuel. as a result of the strict requirements for transportation fuels.
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This novel approach should preserve the low-temperature catalytic activity of denitrification catalysts, effectively expanding the deep load adjustment capabilities of …
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Denitrification Reactor: The selective catalytic reduction (SCR) method of denitration selected in this paper is the most mature and the most efficient method for denitration …
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Simultaneous desulfurization and denitrification removes SO2 and NOx from flue gas in one unit and only uses one absorbent. Using urea as absorbent removing SO2 and NOx in semi-dry spouted bed has the enormous developmental potential and wide foreground for it overcomes two shortages of wet process such as the amount of urea is …
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The direction and limitation of desulfurization and denitrification reaction were analyzed by calculating thermodynamic functions, and the reaction mechanism of desulfurizati on and denitration was proposed. The pollutant removal efficiencies were deduced by the equilibrium partial pressure of SO 2 and NO at different reaction …
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Experimental study on integrated desulfurization and denitrification of low-temperature flue gas by oxidation method
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We prepared the La(6%)–V(7%)–ZSM-5 desulfurization catalyst, the Ce(8%)–Cu(8%)–ZSM-5 denitrification catalyst, and the …
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However, it may not be possible to treat sulfate and nitrate separately in actual industrial wastewater, therefore, the integrated simultaneous desulfurization and denitrification (ISDD) process ...
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The results showed that the anaerobic-anoxic process was feasible for the treatment of flue gas washing wastewater and would be prospectively applied to other wastewater with the higher ratio of SO4(2-)/NO3(-). For amine-based carbon dioxide capture, nitrogen oxides and sulfur oxides were the main pollutants that had a negative …
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Our paper introduces mature and new flue gas denitration and desulfurization technologies along with their processing principles, industrial status, merits, and …
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The integrated process for the simultaneous desulfurization and denitrification using H2O2 solution assisted with additive as well as microwave was presented, and researched by chemical dynamics ...
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The study of CuO adsorption method [27] began in the 1980s, and the process of simultaneous desulfurization and denitrification is divided into two steps. The first step …
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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 …
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