Thermal stability of the DPT reaction system synthesized by acetic anhydride method

Zhi Wang. Shaohua Jin. Guanghui Gu. Xinping Zhao. Yulin Wei. Zhiyan Lu. Kun Chen. Shusen Chen.

DOI: https://doi.org/10.70114/acmsr.2024.1.1.P15

Keywords:

DPT; nitration reaction mixture; thermal decomposition; Critical ambient temperature.

Abstract:

The adiabatic decomposition of a reaction mixture prepared in DPT using the acetic anhydride method was analyzed using an Accelerating Rate Calorimeter (ARC) to determine the thermal decomposition characteristics and kinetic parameters of the reaction solution at different reaction times. The adiabatic decomposition kinetics were modeled using TSS software, and the corresponding kinetic parameters were derived. Subsequently, a numerical simulation was employed to predict the critical ambient temperature of the reaction liquid in the reactor in case of cooling failure. The results indicated that the CT value was lowest at a feeding time of 10 minutes, highest at a holding time of 15 minutes, and closest to the cooling temperature of the reactor at a feeding time of 30 minutes.