MDEA—PZ—H2O溶液中CO2溶解度及其模型
Solubility of Carbon Dioxide in MDEA-PZ-H_2O Solution and Thermodynamic Model
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摘要: 大范围内测定了CO2在N-甲基二乙醇胺(MDEA)-哌嗪(PZ)水溶液中的溶解度,并建立了满足工程应用的热力学模型,模型平均偏差为9.7%。研究表明哌嗪在溶液中主要存在一级离解反庆,二级离解反应可以忽略。Abstract: Solubility of CO 2 in aqueous mixtures of MDEA with PZ has been further measured and a thermodynamic model, which can be used for engineering calculation, is proposed with the average deviation of 9.7%. The study indicates that there exists a first order dissociation reaction for piperazine in the solution and the second order dissociation reaction can be neglected.