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http://dx.doi.org/10.12925/jkocs.2002.19.2.6

A Study on Cleaning Process for Benzene Recovery in Activated Carbon Bed  

Kang, Sung-Won (Department of Chemical Engineering, Hongik University)
Min, Byong-Hoon (Department of Chemical Engineering, Suwon University)
Suh, Sung-Sup (Department of Chemical Engineering, Hongik University)
Publication Information
Journal of the Korean Applied Science and Technology / v.19, no.2, 2002 , pp. 108-116 More about this Journal
Abstract
Experimental Study was carried out for benzene desorption by purge gas or evacuation in an activated carbon bed. As purge gas flow rate increased, desorption rate increased due to the higher interstitial linear gas velocity. For various purge gas flow rates, desoption curves almost got together if they were plotted against dimensionless time. At a higher flow rate, mass transfer zone became narrower. Temperature drop in the bed was more fast and severe at higher flow rates and higher outer temperature. It was found out that desorption was almost completed when the temperature in the drop of the bed returned to the initial temperature before temperature drop. Desorption by vacuum purge was completed in shorter time than desorption by purge gas. Countercurrent purge was more effective than cocurrent purge.
Keywords
VOC; adsorption; desorption; benzene; toluene; activated carbon;
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