Effect of CO2 and H2S on the solubility of methanethiol in an aqueous methyldiethanolamine solution

Jou, Fang‐Yuan; Mather, Alan E.; Ng, H.J.

doi:10.1016/s0378-3812(99)00129-6

Cited by 12 publications

(27 citation statements)

References 5 publications

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“…Using our experimental results we have calculated the apparent Henry's law constant. It is defined by equation (10). Ki is the partition coefficient.…”

Section: B Static Analytic Methodsmentioning

confidence: 99%

“…We can also cite the works of Coquelet and Richon 8 , and Coquelet et al 9 who have used gas stripping method to determine apparent Henry's law constant and limiting activity coefficient of mercaptans in different aqueous MDEA solutions. Jou and Mather 10 have published some solubility data of methanethiol (methyl mercaptan) in 50wt% aqueous MDEA solution at 40 and 70°C. In their paper, Jou and Mather have indicated that the presence of methanethiol doesn't affect the solubility of the acid gases.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Methane, CO₂, and H₂S on the Solubility of Methyl and Ethyl Mercaptans in a 25 wt % Methyldiethanolamine Aqueous Solution at 333 and 365 K

et al. 2021

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We have investigated the solubility of methanethiol and ethanethiol (methyl and ethyl mercaptans in an aqueous methyldiethanolamine solution (25 wt% ) by using static-analytic method at 333 and 365K. The measurements were done for different pressure of methane in the absence of acid gas with individual acid gas present, and with mixture of acid gases present (CO2 and/with H2S).Additional measurement of Henry's law constant were realized by considering gas stripping method. Effect of total pressure (realized by addition of methane) and effect of acid gas loading for a constant total pressure around 7 MPa were studied. The increasing of pressure and acid gas loading increase the apparent Henry's law constant of the mercaptan, highlighting a drop out effect of the mercaptans.

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“…Using our experimental results we have calculated the apparent Henry's law constant. It is defined by equation (10). Ki is the partition coefficient.…”

Section: B Static Analytic Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Methane, CO₂, and H₂S on the Solubility of Methyl and Ethyl Mercaptans in a 25 wt % Methyldiethanolamine Aqueous Solution at 333 and 365 K

et al. 2021

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“…This is because we refitted the exponents of the equilibrium equations of reactions ( 4) and ( 5) and calculated the reaction equilibrium constants with the new parameters in Table 2. To verify the prediction performance of the improved thermodynamic model on the partial pressure data of CH3SH in the system, the calculated value of the model is compared with the value measured by Jou et al [15] in Figure 8. It can be seen that the predicted CH3SH partial pressure data are in good agreement with the experimental value.…”

Section: Thermodynamics Model Validationmentioning

confidence: 99%

“…Macgregor and Mather [14] reported the absorption of H 2 S and CO 2 with a mixed solvent consisting of MDEA (20.9 wt.%) + sulfolane (30.5 wt.%). Jou et al [15] investigated acid-gas absorption with MDEA, methanethiol, and ethanethiol at 40 and 70 °C at thiol partial pressure within 0.1-15.8 kPa. Haghtalab et al [16] measured the absorption of acid-gas in different mix solvents at 343 K and a total pressure of 0.1-0.21 kPa and reported variation in the solubility of CO 2 and H 2 S in different operating conditions and solvent compositions.…”

Section: Introductionmentioning

confidence: 99%

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

Liu¹,

Chang²,

Xiong³

et al. 2021

Processes

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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 aqueous sulfolane–MDEA solution. First, the accuracy of the thermodynamic model was validated by comparing the calculated partial pressure of CO2, H2S, and CH3SH 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 CO2, COS, and CH3SH 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 (CH3SH) 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.

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“…The data of Jou, et al show that the solubility of methyl and ethyl mercaptan in MDEA and DEA is reduced by twofold to threefold when H 2 S and/or CO 2 are present. [11][12][13]…”

Section: Mercaptane Absorptionmentioning

confidence: 99%

Comparison of amine solutions performance for gas sweetening

Abkhiz

Heydari

2014

Asia-Pacific J Chem Eng

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Using different kinds of amines, in Fajr-e-Jam gas refinery, including mixed or activated amines, have provided the chance for better analysis of different kinds of amines performance. In the current work, the most important parameters in gas sweetening refineries such as amine circulation rate, steam consumption, CO 2 and mercaptan removal were investigated for sweetening trains utilizing diethanolamine (DEA), methyldiethanolamine (MDEA), DEA/MDEA and activated methyldiethanolamine (aMDEA). In the case of steam consumption and circulation rates, MDEA and aMDEA, show the less required rates to meet lean amine loadings. For CO 2 removal aMDEA has the best efficiency. In the case of mercaptan removal, DEA shows the best absorption rate compared with other three amines.

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Effect of CO2 and H2S on the solubility of methanethiol in an aqueous methyldiethanolamine solution

Cited by 12 publications

References 5 publications

Effect of Methane, CO₂, and H₂S on the Solubility of Methyl and Ethyl Mercaptans in a 25 wt % Methyldiethanolamine Aqueous Solution at 333 and 365 K

Effect of Methane, CO₂, and H₂S on the Solubility of Methyl and Ethyl Mercaptans in a 25 wt % Methyldiethanolamine Aqueous Solution at 333 and 365 K

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

Comparison of amine solutions performance for gas sweetening

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Effect of CO2 and H2S on the solubility of methanethiol in an aqueous methyldiethanolamine solution

Cited by 12 publications

References 5 publications

Effect of Methane, CO2, and H2S on the Solubility of Methyl and Ethyl Mercaptans in a 25 wt % Methyldiethanolamine Aqueous Solution at 333 and 365 K

Effect of Methane, CO2, and H2S on the Solubility of Methyl and Ethyl Mercaptans in a 25 wt % Methyldiethanolamine Aqueous Solution at 333 and 365 K

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

Comparison of amine solutions performance for gas sweetening

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Product

Resources

About

Effect of Methane, CO₂, and H₂S on the Solubility of Methyl and Ethyl Mercaptans in a 25 wt % Methyldiethanolamine Aqueous Solution at 333 and 365 K

Effect of Methane, CO₂, and H₂S on the Solubility of Methyl and Ethyl Mercaptans in a 25 wt % Methyldiethanolamine Aqueous Solution at 333 and 365 K