Adsorption/desorption of toluene on a hypercrosslinked polymeric resin in a highly humid gas stream

doi:10.1016/j.cjche.2018.09.027

Chinese Journal of Chemical Engineering ›› 2019, Vol. 27 ›› Issue (4): 863-868.DOI: 10.1016/j.cjche.2018.09.027

• Separation Science and Engineering • Previous Articles Next Articles

Adsorption/desorption of toluene on a hypercrosslinked polymeric resin in a highly humid gas stream

Bing Zhou¹, Bin Sun¹, Wenjuan Qiu², Ying Zhou¹, Junqian He¹, Xiao'ai Lu¹, Hanfeng Lu¹

1 Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
2 College of Environment, Zhejiang University of Technology, Hangzhou 310014, China

Received:2018-05-23 Revised:2018-09-26 Online:2019-06-14 Published:2019-04-28
Contact: Ying Zhou, Hanfeng Lu

Adsorption/desorption of toluene on a hypercrosslinked polymeric resin in a highly humid gas stream

Bing Zhou¹, Bin Sun¹, Wenjuan Qiu², Ying Zhou¹, Junqian He¹, Xiao'ai Lu¹, Hanfeng Lu¹

1 Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
2 College of Environment, Zhejiang University of Technology, Hangzhou 310014, China

通讯作者: Ying Zhou, Hanfeng Lu

Abstract

Abstract: In many sources of volatile organic compounds (VOCs), large amounts of water vapor come from the air and the reactors. The relative humidity (RH) of exhaust gas is normally>60% and is supersaturated. Maintaining the property of adsorbent on VOCs in a highly humid gas stream is a serious industrial problem. In this study, the adsorption/desorption behavior of toluene in a micro-mesoporous polymeric resin was investigated in a highly humid environment to explore the influence of abound water vapor on resin adsorption and regeneration. This resin could selectively adsorb toluene at an RH of 80%, and its adsorption property was unaffected by the presence of water vapor. In the case of humidity saturation, the resin displayed a high adsorption capacity at a moisture content of<30%. Therefore, the polymer resin is an excellent water-resistant adsorbent of VOCs. In the regenerative experiment, the resin maintained its original adsorption capability after four adsorption/desorption cycles of toluene purging with nitrogen gas at 120℃. The resin exhibited excellent regeneration performance at high humidity.

Key words: Adsorption/desorption, volatile organic compounds (VOCs), High humidity, Macromolecule resin

摘要： In many sources of volatile organic compounds (VOCs), large amounts of water vapor come from the air and the reactors. The relative humidity (RH) of exhaust gas is normally>60% and is supersaturated. Maintaining the property of adsorbent on VOCs in a highly humid gas stream is a serious industrial problem. In this study, the adsorption/desorption behavior of toluene in a micro-mesoporous polymeric resin was investigated in a highly humid environment to explore the influence of abound water vapor on resin adsorption and regeneration. This resin could selectively adsorb toluene at an RH of 80%, and its adsorption property was unaffected by the presence of water vapor. In the case of humidity saturation, the resin displayed a high adsorption capacity at a moisture content of<30%. Therefore, the polymer resin is an excellent water-resistant adsorbent of VOCs. In the regenerative experiment, the resin maintained its original adsorption capability after four adsorption/desorption cycles of toluene purging with nitrogen gas at 120℃. The resin exhibited excellent regeneration performance at high humidity.

关键词: Adsorption/desorption, volatile organic compounds (VOCs), High humidity, Macromolecule resin

Bing Zhou, Bin Sun, Wenjuan Qiu, Ying Zhou, Junqian He, Xiao'ai Lu, Hanfeng Lu. Adsorption/desorption of toluene on a hypercrosslinked polymeric resin in a highly humid gas stream[J]. Chinese Journal of Chemical Engineering, 2019, 27(4): 863-868.

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Adsorption/desorption of toluene on a hypercrosslinked polymeric resin in a highly humid gas stream

Adsorption/desorption of toluene on a hypercrosslinked polymeric resin in a highly humid gas stream

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