C6H12N4+Mg+KClO4+SrSO4系统的振荡控制和安全分析

从实验和数值分析两方面研究了C6Hl2N 4+Mg+KClO4+SrSO4反应系统的振荡燃烧现象,并对反应机理进行了深层次的分析.结果表明,振荡燃烧是由化学动力学的非线性反馈引起的,即:反应系统中镁的三相与氧气的相互竞争反应造成系统的非线性化学振荡燃烧.氧化剂和可燃剂的比值,以及频率调节剂等吸热物质可调节气相镁的生成速率,能有效地控制药剂的振荡频率.选取适当的控制参数,可以使反应按照预定的、安全的过程进行,避免爆燃的产生.本文的研究结果对化工、军事等领域的安全控制具有重要意义.

OSCILLATION CONTROL AND SAFETY ANALYSIS OF C6H12N4+Mg+KClO4+SrSO4

The present paper describes numerical simulation and experimental results for the oscillatory combustion of Hexamine (C_6H_ 12 N_4) + Magnesium (Mg) + Potassium perchlorate (KClO_4) + Strontium sulfate (SrSO_4). The formulation of the reaction system is given in Table 1. The results of the experiments are shown in Fig.1. The mechanism of the reaction system is thoroughly analyzed. Fig.2 shows the results of the stability analysis in different states. The results show that the oscillatory combustion phenomena are produced by the nonlinear feedback of chemical kinetics, namely the competing reactions of the three phases of Mg, with oxygen gas. The ratio of oxidant and reducing agent, as well as the amount of frequency modulating species, etc., are involved in the controlling reactions. Endothermal species are a necessary condition for creating oscillatory combustion. These species can modulate the rate of creation of Mg gas and will effectively control the oscillatory frequency. The appropriate control of parameters could make the oscillatory combustion reaction occur in a predictable and safe process that will avoid deflagration. The results of this paper are important to the control of safety in the chemical industry, military industry, and others.