Binary adsorption of very low concentration ethylene and water vapor on mordenites and desorption by microwave heating
Binary adsorption of very low concentration ethylene and water vapor on mordenites and desorption by microwave heating
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DOI：
10.1016/j.seppur.2005.03.006
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发表时间：
2005-10
影响因子：
8.6
通讯作者：
Seong-Ick Kim;Takashi Aida;H. Niiyama
中科院分区：
文献类型：
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作者：
Seong-Ick Kim;Takashi Aida;H. Niiyama
微波加热可用于吸附剂的再生，以去除极低浓度的挥发性有机化合物。在本研究中，乙烯和水蒸气的二元吸附丝光沸石（MORs）进行了非常低浓度的乙烯。采用微波辐射吸附床层，考察了吸附水对MORs加热和吸附物脱附的影响。在二元吸附中，所有MORs在很低的浓度范围内对乙烯均表现出线性吸附，且吸附量较单一组分的吸附量有所降低。与HMOR相比，NaMOR在干燥和潮湿条件下均能被微波快速加热至高温。由于水在NaMOR上的强烈吸附作用，同时存在的水蒸气阻碍了乙烯的吸附，但促进了微波加热。在微波加热NaMOR后，乙烯和水的预吸附，乙烯浓度最高约为初始进料中的9倍。
Microwave heating can be applied to regeneration of an adsorbent in the removal of volatile organic compounds in very low concentration. In this study, binary adsorption of ethylene and water vapor on mordenites (MORs) was carried out for very low concentration of ethylene. Microwave was irradiated to the adsorbent bed and the effect of adsorbed water on the heating of MORs and the desorption of the adsorbates were investigated. In the binary adsorption, all MORs showed linear adsorption for ethylene in very low concentration range and the amounts of adsorbed ethylene decreased as compared with the adsorption of the single component. NaMOR was heated up rapidly and to high temperature by microwave irradiation under both dry and humid conditions as compared with HMORs. Due to the strong adsorption of water on NaMOR, the coexisting water vapor hindered the adsorption of ethylene, but promoted microwave heating. In microwave heating of NaMOR after pre-adsorption of ethylene and water, ethylene was concentrated maximally about nine times as high as that in initial feed.