CAJ | 학술논문

针对微波化学研究需要具有尺寸小、工作频带宽等特点的实验装置，本文设计了一种新型同轴微波反应装置。该装置主体是一个同轴腔，一端是填充了聚四氟乙烯的同轴接口，另一端为短路面，还带有两个具有截止波导作用的样品溶液进出口。本文通过基于有限元法的多物理场耦合计算，利用同轴微波反应装置对重油进行加热，得到了915 MHz、2450 MHz以及5800 MHz三个常用的工作频率下，反应装置中的电场以及温度场的分布。从仿真结果可以看出，新型同轴微波反应装置在较宽的微波频段内都可以正常工作。因此，可以根据实验的需求，在较宽的范围内选择工作频率，得到最优化的反应效果。
침대미파화학연구수요구유척촌소、공작빈대관등특점적실험장치，본문설계료일충신형동축미파반응장치。해장치주체시일개동축강，일단시전충료취사불을희적동축접구，령일단위단로면，환대유량개구유절지파도작용적양품용액진출구。본문통과기우유한원법적다물리장우합계산，이용동축미파반응장치대중유진행가열，득도료915 MHz、2450 MHz이급5800 MHz삼개상용적공작빈솔하，반응장치중적전장이급온도장적분포。종방진결과가이간출，신형동축미파반응장치재교관적미파빈단내도가이정상공작。인차，가이근거실험적수구，재교관적범위내선택공작빈솔，득도최우화적반응효과。
For the study of microwave chemistry,it is necessary to develop a reactor with small-size and wide operation frequency band. This paper presents a novel microwave coaxial reactor. Its main part is a coaxial cavity,one end of which is coaxial port filled with PTFE,and the other end is a short circuit plane. Two orifices which are designed as cut-off waveguides for microwave are atta-ched on the cavity as the passageway of sample solutions. The distribution of electromagnetic field and temperature field of this novel microwave coaxial reactor using for heating the heavy oil at 915 MHz,2450 MHz and 5800 MHz are simulated with finite-element method multi-fields coupling analysis. It is clear from the results that this novel microwave coaxial reactor could work properly over a wide frequency band. So according to the requirements of the experiments,we could choose the operation frequency over a wide frequency band to get the optimal reaction effect.