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Simultaneous measurement solubility of carbon dioxide +hydrogen Sulfide into aqueous blends of diisopropanolamineand N-(2-aminoethyl) ethanolamine

Year: 1395
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Ali Haghtalab - Department of Chemical Engineering, Tarbiat Modares University, Tehran, Iran
Mohammad Bagher Zare Talavaki - Department of Chemical Engineering, Tarbiat Modares University, Tehran, Iran


Treatment of the sour natural gas is a major step in natural gas processing so that the acid gases such as H2S and CO2 are removed from natural gas stream. The acid gases are harmful to environment and destroy the production equipment so that their presence in gas stream leads to corrosion and lowering heating value. On the other hand, for reliable and optimum design of separation equipment,primarily sufficient and accurate equilibrium data of the acid gases solubility in the aqueous alkanolamines is required. In this work, the simultaneous solubility of the H2S + CO2 in the alkanolamine mixtures is measured at 313,328 and 343 K and total pressure range of 1-14 bar. The blends are studied as the aqueous mixtures of diisopropanolamine (DIPA) and N-(2-aminoethyl) ethanolamine (AEEA). For the acid gas solubility measurements, a high pressure static apparatus is used through a volumetric method. The mass fraction of the total alkanolamine is fixed at 0.3 and the results are presented as the partial pressure of each acid gas against its loading (mole acid gas/total mole amine). The influence of the AEEA on the aqueous DIPA systems are studied so that it is observed that the absorption of the CO2 in the aqueous alkanolamine enhances and the absorption of the H2S reduces through increasing AEEA mass fraction in the solution


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Haghtalab, Ali and Zare Talavaki, Mohammad Bagher,1395,Simultaneous measurement solubility of carbon dioxide +hydrogen Sulfide into aqueous blends of diisopropanolamineand N-(2-aminoethyl) ethanolamine,سومین کنفرانس بین المللی دستاوردهای نوین پژوهشی در شیمی و مهندسی شیمی,Tehran,

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  • M.-H. Li, B.-C. Chang, Solubility of mixtures of carbon dioxide ...
  • B.P. Mandal, A.K. Biswas, S.S. B andyopadhyay, Selective absorption of ...
  • J.-G. Lu, Y.-F. Zheng, D.-L. He, Selective absorption of H2S ...
  • H.R. Godini, D. Mowla, Selectivity study of H2S and CO2 ...
  • Z. Qian, L.-B. Xu, Z.-H. Li, H. Li, K. Guo, ...

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