Effect of Alkali on the Thermal Decomposition of 2,4-Dichlorobenzoyl Peroxide in Benzene Solution in Adiabatic Environment
ZHANG Xingci1, LIN Jichao2, DING Jiong1, HU Dongfang1, YE Shuliang1
1.Institute of Industry and Trade Measurement Technique, China Jiliang University, Hangzhou 310018, China;
2.Shandong Jinte Safety Technology Company Limited, Taian 271028, China
Abstract：In order to study the effect of alkali on the thermal decomposition characteristics of 2,4-dichlorobenzoyl peroxide (DCBP) in benzene solution, the experiments of 30%DCBP/benzene solutions with different thermal inertia factors and 30%DCBP/benzene solutions mixed with NaOH/H2O were carried out by accelerating rate calorimeter, the thermokinetic calculation was carried out by model-free method, and corresponding reaction models were studied combined with kinetic compensation effect. The results showed that DCBP/benzene solutions began to decompose at 333.15 K. After adding alkali, the activation energy of DCBP/benzene solutions decreased, the reaction model of DCBP/benzene solutions was more complex and the decomposition heat release and heat release rate decreased. With the increase of alkali concentration, the onset temperature of thermal decomposition reaction of DCBP/benzene solutions was lower. The existence of NaOH promoted the thermal decomposition of DCBP/benzene solutions and increased the possibility of thermal runaway, but reduced its severity. In industrial processes such as the use and transportation of DCBP, the temperature should be controlled while avoiding mixing with alkalis.
ZHANG Xingci,LIN Jichao,DING Jiong et al. Effect of Alkali on the Thermal Decomposition of 2,4-Dichlorobenzoyl Peroxide in Benzene Solution in Adiabatic Environment[J]. Chemical Reaction Engineering and Technology, 2022, 38(6): 541-551.
