Modeling CO2, H2S, COS, and CH3SH Simultaneous Removal Using Aqueous Sulfolane–MDEA Solution

In this study, a rate-based absorption model coupled with an improved thermodynamic model was developed to characterize the removal of acid components (CO2 and H2S) and organic sulfur (COS and CH3SH) from natural gas with an aqueou...

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Autores principales:	Ke Liu, Honggang Chang, Gang Xiong, Jinlong He, Qisong Liu, Jinjin Li
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	absorption model rate-based organic sulfur mass transfer Chemical technology TP1-1185 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/0906b10a43bb441597dcfe6b29f1a154
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spelling	oai:doaj.org-article:0906b10a43bb441597dcfe6b29f1a1542021-11-25T18:50:45ZModeling CO<sub>2</sub>, H<sub>2</sub>S, COS, and CH<sub>3</sub>SH Simultaneous Removal Using Aqueous Sulfolane–MDEA Solution10.3390/pr91119542227-9717https://doaj.org/article/0906b10a43bb441597dcfe6b29f1a1542021-10-01T00:00:00Zhttps://www.mdpi.com/2227-9717/9/11/1954https://doaj.org/toc/2227-9717In this study, a rate-based absorption model coupled with an improved thermodynamic model was developed to characterize the removal of acid components (CO<sub>2</sub> and H<sub>2</sub>S) and organic sulfur (COS and CH<sub>3</sub>SH) from natural gas with an aqueous sulfolane–MDEA solution. First, the accuracy of the thermodynamic model was validated by comparing the calculated partial pressure of CO<sub>2</sub>, H<sub>2</sub>S, and CH<sub>3</sub>SH with those of the experimental data reported in the literature. Then, the industrial test data were employed to validate the absorption model and the simulation results agreed well with the experimental data. The average relative errors of the removal rates of CO<sub>2</sub>, COS, and CH<sub>3</sub>SH are 3.3%, 3.0%, 4.1%, respectively. Based on the validated coupled model, the total mass transfer coefficient and mass transfer resistance of each solute component at different column positions were analyzed. The effects of the gas–liquid ratio, overflow weir height, and absorption pressure on the absorption performance of each component were studied, and the influence of the acid component concentration in the feed gas on the removal efficiency of methyl mercaptan (CH<sub>3</sub>SH) was also discussed. It is found that the improved absorption model can better characterize the absorption performance and be conducive to the optimal design of the absorber column.Ke LiuHonggang ChangGang XiongJinlong HeQisong LiuJinjin LiMDPI AGarticleabsorption modelrate-basedorganic sulfurmass transferChemical technologyTP1-1185ChemistryQD1-999ENProcesses, Vol 9, Iss 1954, p 1954 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	absorption model rate-based organic sulfur mass transfer Chemical technology TP1-1185 Chemistry QD1-999
spellingShingle	absorption model rate-based organic sulfur mass transfer Chemical technology TP1-1185 Chemistry QD1-999 Ke Liu Honggang Chang Gang Xiong Jinlong He Qisong Liu Jinjin Li Modeling CO<sub>2</sub>, H<sub>2</sub>S, COS, and CH<sub>3</sub>SH Simultaneous Removal Using Aqueous Sulfolane–MDEA Solution
description	In this study, a rate-based absorption model coupled with an improved thermodynamic model was developed to characterize the removal of acid components (CO<sub>2</sub> and H<sub>2</sub>S) and organic sulfur (COS and CH<sub>3</sub>SH) from natural gas with an aqueous sulfolane–MDEA solution. First, the accuracy of the thermodynamic model was validated by comparing the calculated partial pressure of CO<sub>2</sub>, H<sub>2</sub>S, and CH<sub>3</sub>SH with those of the experimental data reported in the literature. Then, the industrial test data were employed to validate the absorption model and the simulation results agreed well with the experimental data. The average relative errors of the removal rates of CO<sub>2</sub>, COS, and CH<sub>3</sub>SH are 3.3%, 3.0%, 4.1%, respectively. Based on the validated coupled model, the total mass transfer coefficient and mass transfer resistance of each solute component at different column positions were analyzed. The effects of the gas–liquid ratio, overflow weir height, and absorption pressure on the absorption performance of each component were studied, and the influence of the acid component concentration in the feed gas on the removal efficiency of methyl mercaptan (CH<sub>3</sub>SH) was also discussed. It is found that the improved absorption model can better characterize the absorption performance and be conducive to the optimal design of the absorber column.
format	article
author	Ke Liu Honggang Chang Gang Xiong Jinlong He Qisong Liu Jinjin Li
author_facet	Ke Liu Honggang Chang Gang Xiong Jinlong He Qisong Liu Jinjin Li
author_sort	Ke Liu
title	Modeling CO<sub>2</sub>, H<sub>2</sub>S, COS, and CH<sub>3</sub>SH Simultaneous Removal Using Aqueous Sulfolane–MDEA Solution
title_short	Modeling CO<sub>2</sub>, H<sub>2</sub>S, COS, and CH<sub>3</sub>SH Simultaneous Removal Using Aqueous Sulfolane–MDEA Solution
title_full	Modeling CO<sub>2</sub>, H<sub>2</sub>S, COS, and CH<sub>3</sub>SH Simultaneous Removal Using Aqueous Sulfolane–MDEA Solution
title_fullStr	Modeling CO<sub>2</sub>, H<sub>2</sub>S, COS, and CH<sub>3</sub>SH Simultaneous Removal Using Aqueous Sulfolane–MDEA Solution
title_full_unstemmed	Modeling CO<sub>2</sub>, H<sub>2</sub>S, COS, and CH<sub>3</sub>SH Simultaneous Removal Using Aqueous Sulfolane–MDEA Solution
title_sort	modeling co<sub>2</sub>, h<sub>2</sub>s, cos, and ch<sub>3</sub>sh simultaneous removal using aqueous sulfolane–mdea solution
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/0906b10a43bb441597dcfe6b29f1a154
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Modeling CO<sub>2</sub>, H<sub>2</sub>S, COS, and CH<sub>3</sub>SH Simultaneous Removal Using Aqueous Sulfolane–MDEA Solution

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