低阶煤流化床干燥技术研究

Fluidized Bed Technology in Low Rank Coal Drying Engineering

以空气、氮气和水蒸汽为干燥介质和流化介质,围绕低阶煤的干燥特性、化学结构变化和干燥能耗等探讨最佳的低阶煤流化床干燥工艺参数;结合微波干燥技术和微波流化床技术的开发与应用,开展微波流化床干燥低阶煤理论研究。结果表明:低阶煤的微波流化床干燥具有较好的工业化前景,大型化的微波腔设计和流化床干燥设备是未来的研究热点。

Taking applying air, nitrogen and steam as the fluidizing medium, the optimal drying process parameters of low rank coal fluidized bed were investigated on the basis of drying characteristics, chemical structure change and energy consumption of low rank coal. Combined with microwave drying technology and microwave-assisted fluidized bed technology, a microwave-assisted fluidized bed drying technology was proposed based the low rank coal large-scale upgrading technology. The results show that the microwave-assisted fluidized bed dryer will be available for industrial use. Large scale of microwave cavity design and fluidized bed drying equipment will be taken into account in the future.