SO3 formation under oxy-CFB combustion conditions

Duan, Lunbo; Duan, Yuanqiang; Sarbassov, Yerbol; Li, Yanmin; Anthony, Edward J.

doi:10.1016/j.ijggc.2015.10.028

Cited by 25 publications

(26 citation statements)

References 31 publications

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“…It is known that, at lower temperatures, SO 3 is formed by oxidation of molecular oxygen via reactions and and that SO 3 formation is thermodynamically favoured with decreasing temperature. Overall, the observations of Duan et al . agree with the findings of Belo et al .…”

Section: Influence Of Oxy‐fuel Parameters On So3supporting

confidence: 90%

“…The effect of temperature on homogeneous SO 3 formation under different environments was also studied by Duan et al . In their studies, SO 3 concentration increased with temperature even at the lower temperature range (400–700 °C) .…”

Section: Influence Of Oxy‐fuel Parameters On So3mentioning

confidence: 80%

“…A less pronounced effect of H 2 O on SO 3 was noted by Belo et al . The effect of steam was also studied by Duan et al . at 600 °C; they identified an increase of SO 3 concentration from 3.7 ppm to 7.1 ppm when steam increased from 5% to 15%.…”

Section: Influence Of Oxy‐fuel Parameters On So3mentioning

confidence: 92%

“…The effect of SO 2 concentration on SO 3 formation under oxy‐fuel conditions was measured by Duan et al . at constant reactor temperature of 600 °C (Fig.…”

Section: Background For So3 Formation In Combustionmentioning

confidence: 98%

“…concluded that replacing N 2 with CO 2 had a strong effect at higher temperatures. This might be due to higher effectiveness of third‐body collisions, the effect of which is smaller at lower temperatures . Fleig et al .…”

Section: Influence Of Oxy‐fuel Parameters On So3mentioning

confidence: 99%

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Sulfur trioxide formation/emissions in coal‐fired air‐ and oxy‐fuel combustion processes: a review

et al. 2018

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In oxy‐fuel combustion, fuel is burned using oxygen together with recycled flue gas, which is needed to control the combustion temperature. This leads to higher concentrations of sulfur dioxide and sulfur trioxide in the recycled gas, which can result in the formation of sulfuric acid and enhanced corrosion. Current experimental data on SO3 formation, reaction mechanisms, and mathematical modelling have indicated significant differences in SO3 formation between air‐ and oxy‐fuel combustion for both the wet and dry flue gas recycle options. This paper provides an extensive review of sulfur trioxide formation in air‐ and oxy‐fuel combustion environments, with an emphasis on coal‐fired systems. The first part summarizes recent findings on oxy‐fuel combustion experiments, as they affect sulfur trioxide formation. In the second part, the review focuses on sulfur trioxide formation mechanisms, and the influence of catalysis on sulfur trioxide formation. Finally, the current methods for measuring sulfur trioxide concentration are also reviewed along with the major difficulties associated with those measurements using data available from both bench‐ and pilot‐scale units. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Section: Influence Of Oxy‐fuel Parameters On So3supporting

confidence: 90%

Section: Influence Of Oxy‐fuel Parameters On So3mentioning

confidence: 80%

Section: Influence Of Oxy‐fuel Parameters On So3mentioning

confidence: 92%

“…The effect of SO 2 concentration on SO 3 formation under oxy‐fuel conditions was measured by Duan et al . at constant reactor temperature of 600 °C (Fig.…”

Section: Background For So3 Formation In Combustionmentioning

confidence: 98%

Section: Influence Of Oxy‐fuel Parameters On So3mentioning

confidence: 99%

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