间苯三酚法合成TATB反应安全风险评估及热分析OA北大核心CSTPCD

To identify the risks of the phloroglucinol method for the synthesis of 1,3,5-triamino-2,4,6-trinitrobenzene(TATB),a safety risk assessment was conducted.Utilizing the risk matrix method and characteristic temperature grading meth-od,the thermal risk parameters associated with nitration,alkylation,and amination reactions in the synthesis process were tested using differential scanning calorimeter,reaction calorimeter,and adiabatic accelerating calorimeter,and the values of TMRadand TD24 were also predicted.Combining with the study of reaction mechanisms and the exothermic characteristics of the reaction systems under process conditions,the process hazard level was assessed.The thermal stabilities of 1,3,5-trihydroxy-2,4,6-trinitrobenzene(TNPG),1,3,5-triethoxy-2,4,6-trinitrobenzene(TETNB),and TATB were investigated by using DSC method.The non-isothermal kinetic parameters and thermodynamic parameters were calculated using Kissinger and Ozawa methods.Results show that the process hazard is rated as level 5 for both nitration and alkylation processes,indicating high ex-plosion risk.While the process hazard is rated as level 1 for amination process.The mechanical sensitivity of TNPG,TETNB,and TATB demonstrate a certain correlation with their apparent activation energies.The greater the apparent activation energy,the less the sensitivity to mechanical stimulation.