Toluene vapor capture by activated carbon particles in a dual gas-solid cyclone system |
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| Authors: | Yun Hui Lim Khanh Quoc Ngo Young Koo Park |
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| Institution: | 1. Department of Environmental Science and Engineering , Center for Environmental Studies, Kyung Hee University , Kyunggi-do , Yongin , Korea;2. Department of Environmental Engineering , Kawangwon National University , Kangwon-do , Samcheock , Korea |
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| Abstract: | Capturing of odorous compounds such as toluene vapor by a particulate-activated carbon adsorbent was investigated in a gas-solid cyclone, which is one type of mobile beds. The test cyclone was early modified with the post cyclone (PoC) and a spiral flow guide to the vortex finder. The proposed process may contribute to the reduction of gases and dust from industrial exhausts, especially when dealing with a low concentration of odorous elements and a large volume of dust flow. In this device, the toluene capturing efficiency at a 400 ppm concentration rose up to 77.4% when using activated carbon (AC) particles with a median size of 27.03 μm. A maximum 96% of AC particles could be collected for reuse depending on the size and flow rate. The AC regenerated via thermal treatment showed an adsorption potential up to 66.7% throughout repeated tests. Implications: VOCs and particles have been of interest both in industrial field and public indoor spaces. In this study, a post cyclone (PoC) that utilizes a residual vortex from the mother cyclone was modified by inserting a flow guide and was applied to capture toluene vapor. The device of modified post-cyclone system can be used effectively in simultaneous treatment of gas-solid flow. |
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