دورية أكاديمية
Effect of Fly Ash on the Mass Transfer Performance of CO2 Removal Using MEA and DEA Solutions in a Packed Tower
| العنوان: | Effect of Fly Ash on the Mass Transfer Performance of CO2 Removal Using MEA and DEA Solutions in a Packed Tower |
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| المؤلفون: | Wenxia Xie, Chunmin Tu, Jun Zhang, Chengwei Xu |
| المصدر: | Separations, Vol 11, Iss 1, p 20 (2024) |
| بيانات النشر: | MDPI AG, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Physics LCC:Chemistry |
| مصطلحات موضوعية: | CO2 removal, effect, volumetric overall mass transfer coefficient (KGav), fly ash, MEA, DEA, Physics, QC1-999, Chemistry, QD1-999 |
| الوصف: | The accumulation of uncollected fly ash from flue gas in post-combustion CO2 capture processes is a significant concern in current coal-fired power plants due to its potential impact on the performance of CO2 absorbent and absorption towers. In order to determine the effect of fly ash on the mass transfer performance of CO2 absorption into monoethanolamine (MEA) and diethanolamine (DEA) aqueous solutions, experimental studies were carried out using a small-sized packed tower equipped with θ-ring random packing. These studies were conducted under various operating parameters, including solution temperature, liquid/gas ratio (L/G), packing height, and fly ash concentration. The results show that the effect of fly ash on the outlet CO2 concentration was primarily observed during the initial stages of the experimental process. Moreover, the presence of fly ash leads to a reduction in the volumetric overall mass transfer coefficient (KGav) when using MEA and DEA solution, and increasing the fly ash concentration further exacerbates this negative impact. However, the effect of fly ash on the reduction in KGav is not significantly related to its chemical composition but rather depends on the operational parameters. With increasing solution temperature, liquid/gas ratio (L/G), and packing height, the KGav values for different solutions exhibit an upward trend. The negative effect of fly ash on KGav remains relatively stable for MEA as solution temperature and packing height increase. Compared to MEA, fly ash has a greater negative effect on DEA solution under the same experimental conditions. The analysis reveals that the detrimental effect of fly ash on KGav primarily stems from its ability to alter the distribution state of the absorption liquid within the packed tower. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2297-8739 |
| Relation: | https://www.mdpi.com/2297-8739/11/1/20; https://doaj.org/toc/2297-8739 |
| DOI: | 10.3390/separations11010020 |
| URL الوصول: | https://doaj.org/article/c222fda7b0f54c9791c819422315ecd9 |
| رقم الأكسشن: | edsdoj.222fda7b0f54c9791c819422315ecd9 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 22978739 |
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| DOI: | 10.3390/separations11010020 |