论文名称：多效蒸发海水淡化系统中CO2化学解吸的模拟
论文类型：期刊论文
发表刊物：化工学报
所属单位：能源与动力学院
期号：3
页面范围：955-962
ISSN号：0438-1157
摘要：In order to effectively reduce negative influence of non-condensable gas on falling film evaporation and optimize the geometrical parameters of evaporators, a model for chemical desorption of CO2 in the multi-effect distillation (MED) system is presented. The desorption rate of CO2 and its influencing factors are obtained by simulating an actual MED setup. Compared with previous study and practical operation data of an MED desalination plant, the present model is proved to be reliable and has a higher accuracy. The results indicate that the evaporation temperature is the key factor influencing the chemical reaction rate, which increases as the evaporation temperature increases. The salinity and pH value play an important role in determining chemical reaction rate before the seawater temperature is saturated. The increase in the concentrations of the carbonate systems due to seawater evaporation contributes to the chemical desorption of CO2. The desorption rate of CO2 decreases stage by stage mainly due to the reduction of mass transfer coefficients as the evaporation temperatures in evaporators decrease. © All Rights Reserved.
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发表时间：2022-06-29