臺灣博碩士論文加值系統

本研究以Kent and Eisenberg模式為基礎，加以改良，目的在於計算廣範圍的醇胺吸收酸性氣體系統，水溶液中與醇胺反應有關之化學平衡常數以溫度，醇胺濃度，及醇胺對酸性氣體的吸收負載來表示；其它與醇胺反應無關之化學反應平衡常數則採用文獻值。
待定之參數值採用文獻上已有之溶解度數據來回歸，溶解度數據涵蓋範圍包括酸性氣體CO2、H2S及醇胺水溶液Monoethanolamine(MEA)、N-Methyldiethanol-amine(MDEA)、2-Amino-2-methyl-1-propanol (AMP)，溫度範圍在25℃∼120℃之間，醇胺濃度在1M∼5M之間，壓力範圍0.002∼5975kPa之間。
將所得之參數應用於計算溶解度，再與文獻值比較，得到結果令人滿意。

A thermodynamic model for the calculation of equilibrium solubility of the mixtures of acid gases in aqueous blended alkanolamine solutions has been developed using the model of Kent and Eisenberg. The chemical equilibrium constants involving alkanolamines are expressed as functions of temperature, amine concentration and the loading of acid gases. With the exception of the equilibrium constants for reactions involving amines, the literature values for all the ionization constants and Henry's law constants were used in this model. The equilibrium constants involving amines were determined by fitting to the experimental solubility data of carbon dioxide and hydrogen sulfide in aqueous mixtures of monoethanolamine (MEA) with methyidiethanolamine (MDEA) and monoethanol-amine (MEA) with 2-amino-2-methyl-l-propanol (AMP). The temperature ranges from 25℃ to 120℃. The range of the concentration of amine between 1M and 5M. The partial pressure ranges from 0.002kPa to 5975kPa. Satisfactory results were obtained for calculations of the solubility of carbon dioxide and hydrogen sulfide in aqueous MEA /MDEA and MEA/AMP solutions for the systems tested.