| Paper Name |
Thermal oxidation of degradation products from thermoplastic polyvinyl alcohol: Determination on oxidation temperature and residence time |
| Author |
Zhang, Yixiang; Zhang, Su; Mao, Hui; Zhan, Jie; Zhen, Shijie; Tan, Houzhang; Wang, Xuebin |
| Publication/Completion Time |
2023-07-17 |
| Magazine Name |
JOURNAL OF ENVIRONMENTAL MANAGEMENT |
| Vol |
344 |
| Related articles |
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| Paper description |
The degradable protective articles made of thermoplastic polyvinyl alcohol (TPVA) are widely used in nuclear power plants, and they are thermally decomposed after use to reduce solid waste. However, in the real decomposition of TPVA, the temperature in the oxidation reactor is not self-sustaining; as a result, the degra-dation products contain a lot of CO, resulting in more pollution and energy waste. In this paper, jet stirred reactor (JSR) and Chemkin software were used to study the reaction kinetics characteristics of the oxidation process of degradation products from TPVA in the range of 550 degrees C-700 degrees C. Both experiments and kinetic simulation show that a higher average temperature of the oxidation reactor is needed to achieve lower CO emissions. When using 5% or 10% TPVA degradation solution, the average temperature should not befall below 625 degrees C or 675 degrees C. The corresponding residence time should be greater than 6 s and 5 s respectively. The combination of research findings and engineering practice provides great help to the optimization of the actual work process. |
(创新港)
