Dynamic Study of Carbon Dioxide Absorption Using Promoted Absorbent in Bubble Column Reactor
The most common process to remove carbon dioxide from natural gas and the flue gasses is absorption into suitable solvents. Absorption of carbon dioxide are studied experimentally in this work using bubble column reactor (glass cylindrical (QVF) of 7.5 cm i.d. × 140 cm height), where different types...
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| Format: | Article |
| Language: | English |
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Unviversity of Technology- Iraq
2019-04-01
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| Series: | Engineering and Technology Journal |
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| Online Access: | https://etj.uotechnology.edu.iq/article_168920_11ec53f5601f40928e29784b7b8eb753.pdf |
| _version_ | 1797326058140205056 |
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| author | Safa Al-Naimi Farah Jasim Ahmed Kokaz |
| author_facet | Safa Al-Naimi Farah Jasim Ahmed Kokaz |
| author_sort | Safa Al-Naimi |
| collection | DOAJ |
| description | The most common process to remove carbon dioxide from natural gas and the flue gasses is absorption into suitable solvents. Absorption of carbon dioxide are studied experimentally in this work using bubble column reactor (glass cylindrical (QVF) of 7.5 cm i.d. × 140 cm height), where different types of absorbent (30%MEA, 30%K2CO3), promoter types (organic(piperazine)and inorganic(amino acids)) and concentrations were examined over a wide range of gas flow rate cover homogeneous to transition flow regime at ambient temperature and atmospheric pressure. The results showed that the dissolved gas undergoes a pseudo-first order reaction, and the optimum superficial velocity of gas given a higher conversion and rate of reaction at Ug=0.025 m/sec, at this velocity the reaction rate of monoethanolamine with carbon dioxide (94.1% conversion and RA = 7.75*10-3 Kmol/m3 .sec) is higher than reaction rate of potassium carbonate with carbon dioxide(29.3% conversion and RA = 2.73*10-3 Kmol/m3 .sec). Furthermore, the addition of promoters to the 30%K2CO3 absorbents enhanced the reaction between potassium carbonate with carbon dioxide and increased the reaction rate when increasing the concentration of promoters to the critical concentration. The results show that the piperazine is a better promoter from other types of the amino acid promoter used was 52.1% increase in carbonate conversion with carbon dioxide |
| first_indexed | 2024-03-08T06:18:08Z |
| format | Article |
| id | doaj.art-18f3c4c30be84f4484e9171eb490100b |
| institution | Directory Open Access Journal |
| issn | 1681-6900 2412-0758 |
| language | English |
| last_indexed | 2024-03-08T06:18:08Z |
| publishDate | 2019-04-01 |
| publisher | Unviversity of Technology- Iraq |
| record_format | Article |
| series | Engineering and Technology Journal |
| spelling | doaj.art-18f3c4c30be84f4484e9171eb490100b2024-02-04T17:11:05ZengUnviversity of Technology- IraqEngineering and Technology Journal1681-69002412-07582019-04-01371C707810.30684/etj.37.1C.11168920Dynamic Study of Carbon Dioxide Absorption Using Promoted Absorbent in Bubble Column ReactorSafa Al-Naimi0Farah Jasim1Ahmed Kokaz2Department of Chemical Engineering, University of Technology, Baghdad - IraqDepartment of Chemical Engineering, University of Technology, Baghdad - IraqRepublic of Iraq Ministry of Planning, Sectors Planning Directorate, Industrial planning Department, Baghdad - IraqThe most common process to remove carbon dioxide from natural gas and the flue gasses is absorption into suitable solvents. Absorption of carbon dioxide are studied experimentally in this work using bubble column reactor (glass cylindrical (QVF) of 7.5 cm i.d. × 140 cm height), where different types of absorbent (30%MEA, 30%K2CO3), promoter types (organic(piperazine)and inorganic(amino acids)) and concentrations were examined over a wide range of gas flow rate cover homogeneous to transition flow regime at ambient temperature and atmospheric pressure. The results showed that the dissolved gas undergoes a pseudo-first order reaction, and the optimum superficial velocity of gas given a higher conversion and rate of reaction at Ug=0.025 m/sec, at this velocity the reaction rate of monoethanolamine with carbon dioxide (94.1% conversion and RA = 7.75*10-3 Kmol/m3 .sec) is higher than reaction rate of potassium carbonate with carbon dioxide(29.3% conversion and RA = 2.73*10-3 Kmol/m3 .sec). Furthermore, the addition of promoters to the 30%K2CO3 absorbents enhanced the reaction between potassium carbonate with carbon dioxide and increased the reaction rate when increasing the concentration of promoters to the critical concentration. The results show that the piperazine is a better promoter from other types of the amino acid promoter used was 52.1% increase in carbonate conversion with carbon dioxidehttps://etj.uotechnology.edu.iq/article_168920_11ec53f5601f40928e29784b7b8eb753.pdfabsorptioncarbon dioxide capture. promoted potassium carbonateorganic promoteramino acid |
| spellingShingle | Safa Al-Naimi Farah Jasim Ahmed Kokaz Dynamic Study of Carbon Dioxide Absorption Using Promoted Absorbent in Bubble Column Reactor Engineering and Technology Journal absorption carbon dioxide capture. promoted potassium carbonate organic promoter amino acid |
| title | Dynamic Study of Carbon Dioxide Absorption Using Promoted Absorbent in Bubble Column Reactor |
| title_full | Dynamic Study of Carbon Dioxide Absorption Using Promoted Absorbent in Bubble Column Reactor |
| title_fullStr | Dynamic Study of Carbon Dioxide Absorption Using Promoted Absorbent in Bubble Column Reactor |
| title_full_unstemmed | Dynamic Study of Carbon Dioxide Absorption Using Promoted Absorbent in Bubble Column Reactor |
| title_short | Dynamic Study of Carbon Dioxide Absorption Using Promoted Absorbent in Bubble Column Reactor |
| title_sort | dynamic study of carbon dioxide absorption using promoted absorbent in bubble column reactor |
| topic | absorption carbon dioxide capture. promoted potassium carbonate organic promoter amino acid |
| url | https://etj.uotechnology.edu.iq/article_168920_11ec53f5601f40928e29784b7b8eb753.pdf |
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