微波诱导技术用于氧烛制氧的理论研究

传统的氧烛是将氯酸盐或高氯酸盐与金属燃料、催化剂混合后压缩所制得。其产氧原理是利用燃料燃烧所释放的热量来促成氯酸盐或高氯酸盐分解,释放出氧气。氧烛不仅因燃料燃烧而消耗所产生的氧气,而且在产氧过程中往往会产生少量的氯气等有害副产品。为解决上述两个缺陷,笔者提出一种新的微波诱导催化技术来代替传统的燃料加热方法。即在氧烛配方中舍弃燃料,而使用外加的微波作为氯酸盐分解的热源。具体方法是先对氯酸钠氧烛的热过程进行数值模拟,通过反应温度的差异解释氯气作为副产品产生的机理;为验证利用微波诱导加热代替燃料加热的可行性,对TE10基模微波场中氯酸钠的热过程进行数值模拟。计算结果表明,氯酸钠在微波场中升温均匀。因此,微波诱导是抑制产氧过程中有害副产品产生的一种有效途径。

Theoretical Study on Oxygen Generation using Chlorate Candle with Microwave Induction

The conventional method to prompt the heat decomposition of chlorate candle depends on the combustion of metal fuels mixed in chlorate candle. Commonly, a chlorate candle is a powder mixture of sodium chlorate, catalyst and metal fuel. However, a phenomena is observed that a little of chlorine as byproduct usually merged in the process of oxygen generation. Thus, the oxygen as primary product should be purified for breath through multistage filters composed with chemical and physical layers. In order to reduce harmful byproducts in the process, the technology of microwave-inducing catalysis is tamped to replace conventional fuel method for heating function. The fuel in chlorate candle of this new type is abandoned, and microwave energy is loaded as heat source. The result of then-nal analysis on the decomposition of chlorate candle with fuel heating indicates that there is hyperthennal process in part of chlorate candle and it is an important cause to generate harmful byproducts. Another result of numerical analysis on microwave-induction shows that the chlorate candle has a prominent unified temperature, which validates the technology to depress harmful byproducts with micromave-inducing catalysis.