Abstract: In order to design the relief system size of di-tert-butyl peroxide(DTBP) storage tanks,the runaway re-action of DTBP was simulated by accelerating rate calorimeter(ARC).The results indicated that under adiabatic conditions the initial exothermic temperature was 102.6℃,the maximum self-heating rate was 3.095×10⁷℃·min^-1,the maximum self-heating temperature was 375.9℃,and the pressure produced by unit mass was 4.512 MPa·g^-1.Judged by ARC test,the emergency relief system for DTBP was a hybrid system.Based on Design Institute for Emergency Relief System(DIERS) method,the releasing mass flow rate W was determined by Leung methods,and the mass velocity G was calculated by two modified Omega methods.The two relief sizes calculated by monograph Omega method and arithmetic Omega method are close,with only 0.63% relative error.The monograph Omega method is more convenient to apply.

Key words: di-tert-butyl peroxide, accelerating rate calorimeter, runaway reaction, venting size

摘要： In order to design the relief system size of di-tert-butyl peroxide(DTBP) storage tanks,the runaway re-action of DTBP was simulated by accelerating rate calorimeter(ARC).The results indicated that under adiabatic conditions the initial exothermic temperature was 102.6℃,the maximum self-heating rate was 3.095×10⁷℃·min^-1,the maximum self-heating temperature was 375.9℃,and the pressure produced by unit mass was 4.512 MPa·g^-1.Judged by ARC test,the emergency relief system for DTBP was a hybrid system.Based on Design Institute for Emergency Relief System(DIERS) method,the releasing mass flow rate W was determined by Leung methods,and the mass velocity G was calculated by two modified Omega methods.The two relief sizes calculated by monograph Omega method and arithmetic Omega method are close,with only 0.63% relative error.The monograph Omega method is more convenient to apply.

关键词: di-tert-butyl peroxide, accelerating rate calorimeter, runaway reaction, venting size