基于烟气加热的新型垃圾热解气化炉热工特性数值模拟

NUMERICAL SIMULATION OF THE TEMPERATURE FIELD IN THE NEW GASIFIER HEATING BY HIGH TEMPERATURE SMOKE

为了解新型烟气加热的垃圾热解气化炉运行时的热工状况,采用实验研究与理论模拟相结合的方式,在实验室电炉热解梧桐落叶,采用烟气加热方式的热解气化炉热解粗破碎梧桐落叶的中试实验获得的初始数据的基础上,运用CFD计算软件模拟烟气加热的垃圾热解气化炉内部温度场,模拟结果与实验结果相吻合。结果显示:该炉型热解气化室内部温度分布合理,稳定的高温段分布较广,能为垃圾的热解气化提供必要的热能。同时模拟连续进料条件下热解室的内部温度分布情况,为设备的改进提供指导作用。

In order to know the pyrology state of the new gasifier heating by high temperature smoke,the combination of experiment and computational fluid dynamics was applied.By the computational fluid dynamics and the data from the pyrogenation experiment of the Chinese parasol tree leaves heating by electric cooker and the new gasifier,it was simulated the temperature field in the reactor.The results of the simulation show good agreement with experimental data.The numerical results also show that the temperature in the reactor was distributed suitably,the range of high temperature was wide,it can provide adequate energy for pyrogenation.At the same time,it was simulated the temperature field in the reactor when it was circulated continuously,which was in favor of ameliorating the gasifier.