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Thermal oxidation of degradation products from thermoplastic polyvinyl alcohol: Determination on oxidation temperature and residence time.
Zhang, Yixiang; Zhang, Su; Mao, Hui; Zhan, Jie; Zhen, Shijie; Tan, Houzhang; Wang, Xuebin.
Afiliación
  • Zhang Y; MOE Key Laboratory of Thermo-Fluid Science and Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, China.
  • Zhang S; MOE Key Laboratory of Thermo-Fluid Science and Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, China.
  • Mao H; MOE Key Laboratory of Thermo-Fluid Science and Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, China.
  • Zhan J; China General Nuclear Power Research Institute Co., Ltd, Shenzhen, China.
  • Zhen S; MOE Key Laboratory of Thermo-Fluid Science and Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, China.
  • Tan H; MOE Key Laboratory of Thermo-Fluid Science and Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, China.
  • Wang X; MOE Key Laboratory of Thermo-Fluid Science and Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, China. Electronic address: wxb005@mail.xjtu.edu.cn.
J Environ Manage ; 344: 118619, 2023 Oct 15.
Article en En | MEDLINE | ID: mdl-37467518
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 degradation 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 °C-700 °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 °C or 675 °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.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Alcohol Polivinílico / Calor Tipo de estudio: Prognostic_studies Idioma: En Revista: J Environ Manage Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Alcohol Polivinílico / Calor Tipo de estudio: Prognostic_studies Idioma: En Revista: J Environ Manage Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido