Monitoring, modeling, and optimization of parameters affecting the recovery efficiency of acid gases from a sweetening unit
Amine processes are the advanced technology available today for the removal of carbon dioxide (CO2) and hydrogen sulfide (H2S) acid gases. Methyldiethanolamine (MDEA) is a well-known tertiary amine used selectively for the removal of carbon dioxide from natural gas. There are many parameters that ca...
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Egyptian Petroleum Research Institute
2023-12-01
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| Series: | Egyptian Journal of Petroleum |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1110062123000545 |
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| author | Walaa Mahmoud Shehata Ehab Ibrahim Abd-elhamid Fatma Khalifa Gad |
| author_facet | Walaa Mahmoud Shehata Ehab Ibrahim Abd-elhamid Fatma Khalifa Gad |
| author_sort | Walaa Mahmoud Shehata |
| collection | DOAJ |
| description | Amine processes are the advanced technology available today for the removal of carbon dioxide (CO2) and hydrogen sulfide (H2S) acid gases. Methyldiethanolamine (MDEA) is a well-known tertiary amine used selectively for the removal of carbon dioxide from natural gas. There are many parameters that can affect the efficiency of separating these acid gases from natural gas. In this paper, we have studied, modeled, and optimized different operating parameters of sour gas feed and MDEA solution which affect the CO2 recovery efficiency from an existing sweetening unit. These operating parameters are the sour gas feed temperature and pressure, volume ratio (%) of carbon dioxide in the feed gas, amine inlet temperature, and amine circulation rate. Actual data were collected from an industrial CO2 sweetening unit over one year. These data were used to study the effect of the studied operating parameters on the recovery efficiency of CO2 from the sweetening unit. All studied operating parameters were found to have an impact on the recovery efficiency of the removed gases. A response surface methodology approach was used in Design-Expert software version 13 to model the relationship between considered operating parameters and CO2 recovery efficiency. In addition, Design Expert numerical optimization has been used to maximize CO2 recovery efficiency. The results showed that the optimal range of sour gas feed temperature is 34.71 to 45.56 °C, sour gas feed pressure is 8.32 to 10.04 barg, the volume ratio (%) of carbon dioxide in the sour gas feed is 8.51 to 10.15, the temperature of the amine is 38.03 to 43.96 °C, and the amine circulation rate is 788.39 to 1122.35 m3/h. The presented work can be considered as a guideline for increasing the recovery efficiency of CO2 for both new and existing sweetening units. |
| format | Article |
| id | doaj-art-5c59cf58ecec4e8ba0d43b6f2fcbc779 |
| institution | DOAJ |
| issn | 1110-0621 |
| language | English |
| publishDate | 2023-12-01 |
| publisher | Egyptian Petroleum Research Institute |
| record_format | Article |
| series | Egyptian Journal of Petroleum |
| spelling | doaj-art-5c59cf58ecec4e8ba0d43b6f2fcbc7792025-08-20T03:04:42ZengEgyptian Petroleum Research InstituteEgyptian Journal of Petroleum1110-06212023-12-01324212910.1016/j.ejpe.2023.11.001Monitoring, modeling, and optimization of parameters affecting the recovery efficiency of acid gases from a sweetening unitWalaa Mahmoud Shehata0Ehab Ibrahim Abd-elhamid1Fatma Khalifa Gad2Corresponding author.; Petroleum Refining and Petrochemical Engineering Department, Faculty of Petroleum and Mining Engineering, Suez University, Suez, EgyptPetroleum Refining and Petrochemical Engineering Department, Faculty of Petroleum and Mining Engineering, Suez University, Suez, EgyptPetroleum Refining and Petrochemical Engineering Department, Faculty of Petroleum and Mining Engineering, Suez University, Suez, EgyptAmine processes are the advanced technology available today for the removal of carbon dioxide (CO2) and hydrogen sulfide (H2S) acid gases. Methyldiethanolamine (MDEA) is a well-known tertiary amine used selectively for the removal of carbon dioxide from natural gas. There are many parameters that can affect the efficiency of separating these acid gases from natural gas. In this paper, we have studied, modeled, and optimized different operating parameters of sour gas feed and MDEA solution which affect the CO2 recovery efficiency from an existing sweetening unit. These operating parameters are the sour gas feed temperature and pressure, volume ratio (%) of carbon dioxide in the feed gas, amine inlet temperature, and amine circulation rate. Actual data were collected from an industrial CO2 sweetening unit over one year. These data were used to study the effect of the studied operating parameters on the recovery efficiency of CO2 from the sweetening unit. All studied operating parameters were found to have an impact on the recovery efficiency of the removed gases. A response surface methodology approach was used in Design-Expert software version 13 to model the relationship between considered operating parameters and CO2 recovery efficiency. In addition, Design Expert numerical optimization has been used to maximize CO2 recovery efficiency. The results showed that the optimal range of sour gas feed temperature is 34.71 to 45.56 °C, sour gas feed pressure is 8.32 to 10.04 barg, the volume ratio (%) of carbon dioxide in the sour gas feed is 8.51 to 10.15, the temperature of the amine is 38.03 to 43.96 °C, and the amine circulation rate is 788.39 to 1122.35 m3/h. The presented work can be considered as a guideline for increasing the recovery efficiency of CO2 for both new and existing sweetening units.http://www.sciencedirect.com/science/article/pii/S1110062123000545Natural gasSweetening unitMDEAResponse Surface MethodologyOptimization |
| spellingShingle | Walaa Mahmoud Shehata Ehab Ibrahim Abd-elhamid Fatma Khalifa Gad Monitoring, modeling, and optimization of parameters affecting the recovery efficiency of acid gases from a sweetening unit Egyptian Journal of Petroleum Natural gas Sweetening unit MDEA Response Surface Methodology Optimization |
| title | Monitoring, modeling, and optimization of parameters affecting the recovery efficiency of acid gases from a sweetening unit |
| title_full | Monitoring, modeling, and optimization of parameters affecting the recovery efficiency of acid gases from a sweetening unit |
| title_fullStr | Monitoring, modeling, and optimization of parameters affecting the recovery efficiency of acid gases from a sweetening unit |
| title_full_unstemmed | Monitoring, modeling, and optimization of parameters affecting the recovery efficiency of acid gases from a sweetening unit |
| title_short | Monitoring, modeling, and optimization of parameters affecting the recovery efficiency of acid gases from a sweetening unit |
| title_sort | monitoring modeling and optimization of parameters affecting the recovery efficiency of acid gases from a sweetening unit |
| topic | Natural gas Sweetening unit MDEA Response Surface Methodology Optimization |
| url | http://www.sciencedirect.com/science/article/pii/S1110062123000545 |
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