为实现2-甲基四氢呋喃（2-MeTHF）循环利用，采用一系列吸附剂（3A、4A和5A分子筛）对2-MeTHF脱水进行研究。考察了分子筛种类、投入量对脱水效果的影响；研究了该过程的热力学和动力学；并通过固定床吸附实验测得其穿透曲线。结果表明，水分去除率随吸附剂投料量的增加而升高，且3A和5A分子筛的性能较好，其投料量均为500 g/L时，水分去除率达到99.8%和99.7%。脱附实验表明，2种分子筛的吸水量远高于2-MeTHF，因此这2种分子筛在2-MeTHF的脱水中有很高的应用价值。用Yoon-nelson模型和Thomas模型对5A和3A在固定床上的吸附数据进行拟合，得到的所有R²均大于0.999，表明2种模型均可描述2种分子筛在固定床上对水的吸附行为。

In order to realize the recycling of 2-methyltetrahydrofuran (2-MeTHF),a series of adsorbents (3A,4A and 5A molecular sieves) are employed to study the dehydration of 2-MeTHF.The impact of the type and dosage of molecular sieves on dehydration effect is studied in detail.Thermodynamics and dynamics of this process are studied.The breakthrough curve is measured via fixed bed adsorption experiment.Results show that the dehydration efficiency increases with the increasing adsorbent dosage.The 5A and 3A molecular sieves show more efficient.Dehydration efficiencies are as high as 99.7% and 99.8% when the dosages of 5A and 3A molecular sieves increase to 500 g·L^-1.Results from desorption experiments show that water adsorption capacities of both 5A and 3A molecular sieves are much higher than that of 2-MeTHF,representing high application value in the dehydration of 2-MeTHF.Yoon-nelson model and Thomas model are utilized to fit the adsorption data of 5A and 3A on a fixed bed,all the obtained R² are greater than 0.999,showing that both models can describe well the adsorption behavior of two molecular sieves on the fixed bed.

霍宇辰(1994-),男,硕士研究生,研究方向为膜材料的制备与应用,245284422@qq.com