2015
DOI: 10.1021/acs.iecr.5b02249
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Kinetics of Thermal Regeneration of SO2-Captured V2O5/AC

Abstract: Carbon-based materials have been used for SO 2 removal from flue gases for several decades. In this process, SO 2 is captured by storing in the pores of carbons in the form of H 2 SO 4 , and regeneration of the SO 2 -captured materials is necessary to recover SO 2 capture ability. V 2 O 5 -supported activated coke (V 2 O 5 /AC) has been reported to be highly active for SO 2 removal, and its regeneration has been investigated from the viewpoint of the reaction mechanism. This work studied the regeneration kinet… Show more

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Cited by 12 publications
(7 citation statements)
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“…The decrease might be caused by water film covering on the AC surface, which prevents other components from adsorbing onto the surface and diffusing in the inner pores. The trend found in this work agrees with other works. , Apart from the stimulation to desulfurization activity, H 2 O had inhibition and poisoning effect on AC catalyst in the NO x removal process …”
Section: Results and Discussionsupporting
confidence: 92%
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“…The decrease might be caused by water film covering on the AC surface, which prevents other components from adsorbing onto the surface and diffusing in the inner pores. The trend found in this work agrees with other works. , Apart from the stimulation to desulfurization activity, H 2 O had inhibition and poisoning effect on AC catalyst in the NO x removal process …”
Section: Results and Discussionsupporting
confidence: 92%
“…As shown in Figure , 9% O 2 brought neither a higher sulfur capacity nor a longer breakthrough time compared to 6% O 2 . This is because the limiting adsorption sites on the AC surface would allow only a certain amount of gas molecules to adsorb. , Consequently, when O 2 was in excess, the excessive part cannot take part in the reaction because of a certain amount of or even less SO 2 * on AC surface no matter which form of O 2 that SO 2 can react with. In addition, the sulfur capacity without O 2 in the flue gas of 0.1 g/100 g AC was significantly lower than the 0.5 g/100 g AC sulfur capacity without H 2 O, suggesting a more important role for O 2 than H 2 O in the SO 2 removal process.…”
Section: Results and Discussionmentioning
confidence: 99%
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“…Kinetic model can predict the complex reaction process and mechanism by a series of thermogravimetric data. In the nonisothermal experiments, the sample mass was measured with the increase of reaction temperature, and the reaction equation can be expressed as follows: dxdt=italicKf()x, where d x /d t denotes the rate of conversion, K represents the reaction rate constant, f (x) is kinetics mechanism function, and t is time.…”
Section: Kinetic Modelsmentioning
confidence: 99%
“…The weight loss of first peak was 16.46% from 20 to 304.7 °C, and the corresponding peak temperature of DTA was 138.3 °C. It should be attributed to the desorption of H 2 O, H 2 S, and SO 2 physically adsorbed by 13X-E. 38 The weight loss of the second peak was 12.16% between 304.7 and 500.9 °C and the peak temperature of DTA was 457.8 °C, corresponding to the boiling point of sulfur (444.6 °C). It should be attributed to the decomposition of sulfuric acid and vaporization of sulfur.…”
Section: Energy and Fuelsmentioning
confidence: 94%