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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 ,并建立了能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应 ,二级离解反应可以忽略。
The solubility of CO2 in aqueous solution of N-methyldiethanolamine (MDEA) -piperazine (PZ) was determined over a wide range. A thermodynamic model was established to meet the engineering requirements. The average deviation of the model was 9.7%. Studies have shown that piperazine exists mainly in the solution of a first-order dissociation reaction, secondary dissociation reaction can be ignored.