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<p>Overpressure caused by thermal decomposition of di-tert-butyl peroxide (DTBP) under external heat input poses a significant risk in chemical production. To investigate the venting behavior of DTBP thermal decomposition in an industrial-scale reactor under external heat input, both adiabatic calorimetry (ARC) experiments and computational fluid dynamics (CFD) simulations are conducted in this paper. First, the DIERS model is used to calculate the vent sizing for the 2.3 m<sup>3</sup> industrial-scale reactor based on ARC test data. Next, the CFD method is used to simulate the venting process of DTBP thermal decomposition in an industrial-scale reactor. As a result, the spatial and temporal evolution of parameters such as temperature, pressure and flow velocity during the venting process is obtained. Finally, a sensitivity study of key variables in the venting process is performed. The venting characteristics of DTBP in an industrial-scale reactor under different working conditions are revealed. This work contributes to a deeper understanding of the overpressure hazards of DTBP and similar hazardous chemicals.</p>

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CFD simulation study on venting behavior of DTBP thermal decomposition in an industrial-scale reactor under external heat input

  • 期刊论文

  • 发表日期：

    2025年10月4日

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  • Kaixuan Zhang,
  • Shuyu Chen,
  • Di Xiao,
  • Jiajia Jiang,
  • Juncheng Jiang

摘要

Overpressure caused by thermal decomposition of di-tert-butyl peroxide (DTBP) under external heat input poses a significant risk in chemical production. To investigate the venting behavior of DTBP thermal decomposition in an industrial-scale reactor under external heat input, both adiabatic calorimetry (ARC) experiments and computational fluid dynamics (CFD) simulations are conducted in this paper. First, the DIERS model is used to calculate the vent sizing for the 2.3 m3 industrial-scale reactor based on ARC test data. Next, the CFD method is used to simulate the venting process of DTBP thermal decomposition in an industrial-scale reactor. As a result, the spatial and temporal evolution of parameters such as temperature, pressure and flow velocity during the venting process is obtained. Finally, a sensitivity study of key variables in the venting process is performed. The venting characteristics of DTBP in an industrial-scale reactor under different working conditions are revealed. This work contributes to a deeper understanding of the overpressure hazards of DTBP and similar hazardous chemicals.