利用数值模拟方法研究树脂裂解反应器的进气结构

利用数值模拟的方法,考察了树脂裂解反应器上部进气方式的效果,发现存在空气利用率低的问题,同时空气还会带走反应器内的大量热量,削弱树脂裂解反应区域的温度,由此证明了试验推论的正确性。同时,利用数值模拟的方法,对设备进气方式进行优化改进:当采用下部进气后,空气的利用率得到明显的提升,空气分布也较为均匀。但此时,空气对反应区域内温度的削弱作用也更为明显。此外,随着设备进气口直径的减小和进气口数量的增加,能够较为明显地提高树脂反应区域的空气分布均匀度,而提升设备的加热功率,对提高反应区域内的温度有显著的作用。

Study on air intake structures of a resin decomposition reactor through a numerical simulation method

The effect of the upper air intake mode of a resin decomposition reactor in China Institute for Radiation Protection (CIRP) was investigated through numerical simulation method. It was found with this kind of simulation that there are some problems such as low air utilization rate, heat loss caused by air flow, and temperature decrease in resin decomposition reaction zone. The air intake mode of the equipment was improved through the numerical simulation method with a lower air intake mode which resulted in better air utilization rate and more uniform air distribution. However, in this case, the weakening effect of air on the temperature in reaction zone was also more obvious. In addition, as the diameter of the air inlet of the device decreases and the number of air inlets increases, the air distribution uniformity of the resin reaction zone can be significantly improved, and increasing the heating power of the device has a significant effect on increasing the temperature of reaction zone.