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http://dx.doi.org/10.14478/ace.2017.1025

Practical Study of Low-temperature Vacuum Swing Adsorption Process for VOCs Removal  

Jeon, Mi-Jin (Korea Testing Laboratory Environmental Convergence Technology Center)
Pak, Seo-Hyun (Korea Testing Laboratory Environmental Convergence Technology Center)
Lee, Hyung-Don (Korea Testing Laboratory Environmental Convergence Technology Center)
Jeon, Yong-Woo (Korea Testing Laboratory Environmental Convergence Technology Center)
Publication Information
Applied Chemistry for Engineering / v.28, no.3, 2017 , pp. 332-338 More about this Journal
Abstract
The objective of this work was to study the low temperature vacuum adsorption technology applicable to small and medium scale painting plants, which is the main emission source of volatile organic compounds. The low-temperature vacuum swing adsorption (VSA) technology is the way that the adsorbates are removed by reducing pressure at low temperature ($60{\sim}90^{\circ}C$) to compensate disadvantages of the existing thermal swing adsorption (TSA) technology. Commercial activated carbon was used and the absorption and desorption characteristics of toluene, a representative VOCs, were tested on a lab scale. Also based on the lab scale experimental results, a $30m^3min^{-1}$ VSA system was designed and applied to the actual painting factory to assess the applicability of the VSA system in the field. As a result of lab scale experiments, a 2 mm pellet type activated carbon showed higher toluene adsorption capacity than that of using 4 mm pellet type, and was used in a practical scale VSA system. Optimum conditions for desorption experiments were $80{\sim}90^{\circ}C$ and 100 torr. In the practical scale system, the adsorption/desorption cycles were repeated 95 times. As a result, VOCs discharged from the painting factory can be effectively removed upto 98% or more even after repeated adsorption/desorption cycles when using VSA technology indicating potential field applicabilities.
Keywords
VOCs; adsorption; desorption; VSA process; practical study;
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Times Cited By KSCI : 2  (Citation Analysis)
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