| Autor: |
Qian, Jingwen, Liu, Susu, Wang, Zhongyu, Yu, Mingyi, Lian, Zheng, Zhang, Shule, Zhong, Qin |
| Zdroj: |
Industrial & Engineering Chemistry Research; October 2024, Vol. 63 Issue: 42 p17878-17888, 11p |
| Abstrakt: |
In the typical wet flue gas denitration technology using sulfite solutions, the rapid free radical chain reaction of SO3•–oxidation by O2is the main reason for the significant consumption of absorbents and inefficient denitration. The study utilizes l-ascorbic acid (VC) to inhibit the free radical chain reaction. VC combined with SO3•–to form stable compounds, which hindered the oxidation of SO3•–to SO5•–by O2, leading to an 80.7 mol % decrease in Na2SO3consumption by adding millimolar-level VC. Compared to the sulfite solution, the best denitration efficiency of the VC/Na2SO3mixture solution increased from 94.4 to 99.2 vol %, and the absorption time for absorption efficiency above 90 vol % was extended from 7 to 72 min. Additionally, a macro absorption model describing the rates of macro absorption was established based on various operating conditions. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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