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安全泄放是在失控条件下降低反应体系风险最为经济有效的技术措施。为了研究泄放口的设计,利用高性能绝热量热仪PhiTEC II对质量分数20%的过氧化二叔丁基(DTBP)-甲苯(C7H8)体系进行了测试,得到热惯量1.06条件下温升速率、压升速率随温度变化的数据。结果表明:该DTBP体系的起始分解温度为148℃,其反应体系属蒸汽和气体共同作用的混合体系;采用Leung方法和OMEGA方法对该体系的安全泄放量和泄放装置的泄放能力进行了计算,求得当泄放压力为0.25 MPa时的泄放面积为0.001 4 m2;低热惯量的绝热量热仪Phi-TEC II可以为失控反应的压力泄放设计提供基础数据,有利于提高安全泄放设计的可靠性。
Safe discharge is the most economical and effective technical measure to reduce the risk of the reaction system under uncontrolled conditions. In order to study the vent design, a 20% by mass di-tert-butyl peroxide (DTBP) -toluene (C7H8) system was tested using a high performance adiabatic calorimeter PhiTEC II to obtain the temperature rise at a thermal inertia of 1.06 Rate, rate of pressure rise with temperature data. The results show that the initial decomposition temperature of the DTBP system is 148 ℃, and the reaction system is a mixed system of steam and gas interaction. The safety venting capacity and discharge capacity of the DTBP system are studied by Leung method and OMEGA method The calculated release area is 0.001 4 m2 when the discharge pressure is 0.25 MPa. The adiabatic calorimeter Phi-TEC II with low thermal inertia can provide basic data for pressure relief design of uncontrolled reaction, Put design reliability.