Low Temperature and Low Pressure Air Stripping Catalytic Oxidation Process for the Removal of VOC-containing Wastewater from Chemical Industry.

• Main Author: 劉育瑞
• Other Authors: Chuang, K. T.
• Format: Others
• Language: zh-TW
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/88725744175255391530

碩士 === 國立中正大學 === 化學工程研究所 === 88 === Abstract Hydrophobic catalysts, Pt/SDB (Styrene Divinylbenzene Copolymer), patented by Dr. Chuang (Alberta University, Canada) have been used for the destruction of volatile organic compounds (VOC) in wastewater. The test reactions indicated that the catalysts present excellent performance at low concentration but poor in high VOC concentration. Because of the heat removal problem, oxidative reaction would be happen within the catalyst leading to rapid aging and crumbling. For the petrochemical industry in Taiwan, the rather high VOC containing in wastewater (usually higher than 10,000 ppm) limit the application of Pd/SDB catalysts. Since Pt/Zeolite of high silica to alumina ratio also has the hydrophobic characteristic and endures much higher temperature than Pd/SDB do, they are chosen for the treatment of wastewater containing high VOC. As expected, the catalysts present not only high conversion but also good stability maintenance. Because of their high stability and regenerability, the catalysts were regarded to be promising for industrial application and the feed reactivity then was tested. The experimental results indicated that the reaction rate is inversely proportional to the molecular weight for the compounds with same functional group and aldehyde is easier to be destructed than alcohol. To minimize the energy consumption, liquid phase reaction was preferred since the heat of reaction could maintain the reaction temperature.