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• W3174508967 abstract "Sour gas components (mostly H 2 S and CO 2 ) are to be removed from natural gas in a sweetening process. Analysis of sweetening of natural gas has been carried out by formulating steady state and transient rate-based models which have been developed based on film theory and surface renewal theory for the two phases (gas and liquid) in the industrial absorber considering vapor liquid equilibria . The analytical equations representing the model were simulated and the profiles of sour components were compared with industrial data for validation. The model considers kinetics of reaction between solvent methyl-di-ethanolamine (MDEA) which enters the column from top and feed sour gas from bottom containing H 2 S and CO 2 . The concentration profiles of acid gas components are obtained for both the phases. Transient model representing temperature dynamics has been validated using industrial data with a mean square error of 0.4475. The removal efficiency for sour-gas is 95%. A quadratic regression model based on statistical data has also been formulated to predict thermodynamic properties concerning solubility of sour gas components in the solvent under different temperatures and pressures. Optimization of model reveals that separation of H 2 S is favoured at T = 318.46 K, P = 707.12 kPa and concentration = 4.42 mol/lit while optimal operating points for CO 2 are T = 338.23 K, P = 3535.69 kPa and concentration = 4.43 mol/lit. It can be observed that compared to H 2 S dynamics, CO 2 dynamics is sluggish. The comprehensive form of the rate-based model can be used for formulating control strategies. • A dynamic model for acid gas treatment has been developed using two-film & surface-renewal theory. • Steady state & transient profiles of sour components. • Alkanol-amine solvents are used. • Effects of parameters on quality of removal of sour components are studied. • Statistical model for sour components are developed for high pressure." @default.
• W3174508967 created "2021-07-05" @default.
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• W3174508967 date "2021-11-01" @default.
• W3174508967 modified "2023-09-29" @default.
• W3174508967 title "Dynamic modeling and solubility studies of sour gases during sweetening process of natural gas" @default.
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• W3174508967 doi "https://doi.org/10.1016/j.jngse.2021.104087" @default.
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