活性炭与分子筛吸附性能比较研究

Study on Adsorption of Activated Carbon and Zeolite

设计一套动态吸附装置。选取了三种室内空气中含量较大的有害气体:甲醛、苯和甲苯作为吸附质。利用气相色谱仪测定其穿透曲线,对活性炭和分子筛的吸附性能进行了比较。结果显示分子筛吸收低浓度的甲醛和甲苯性能较好,而活性炭吸收低浓度的苯性能较好。综合平衡吸附量、穿透时间和平衡时间三个指标进行比较,活性炭的吸附性能要优于分子筛。

A dynamic adsorption device was designed for the study.Three types of harmful gases with high level in indoor air that were formaldehyde,benzene and toluene were selected as adsorbate.Its breakthrough curves were determined by gas chromatograph.The adsorption of activated carbon and zeolite were compared.The conclusion is that zeolite is better to adsorpt low concentration of formaldehyde and toluene and activated carbon is better to adsorpt low concentration of benzene.The adsorption of activated carbon is better than zeolite through the comparison of equilibrium adsorption capacity,breakthrough time and equilibration time.