在冷态试验装置上对环形悬浮空间气固流动特性进行了较深入细致的研究。结果表明：环形旋涡流化床采用内中心筒方式使切向速度分布更为均匀，轴向速度最大值的核心区有所减少。在一定的旋流数下，可实现悬浮空间多处回流区，极有助于实现颗粒的炉内循环。根据测量，颗粒质量流率分布沿高度方向存在着一个最大值，沿径向分布则呈内低外高的趋势，这些均对减少颗粒扬析量有着重要的作用。依据初步的研究结果表明：此种炉型旋涡流化床较传统鼓泡流化床更为优越，因此可作为中小型工业锅炉的更新替代炉型。图６表２参８ In the cold test device, the gas-solid flow characteristics of the annular space are studied in detail. The results show that the annular vortex fluidized bed adopts the inner central tube to make the tangential velocity distribution more uniform and the core area with the maximum axial velocity reduced. At a certain number of swirl, floating space can be achieved at multiple reflux zones, very helpful to achieve particle furnace circulation. According to the measurement, there is a maximum value of particle mass flow rate distribution along the height direction and a low and high inside-out trend along the radial direction, all of which play an important role in reducing the quantity of particles. Based on the preliminary research results, this kind of boiler vortex fluidized bed is more superior than the traditional bubbling fluidized bed, so it can be used as an updated alternative furnace for small and medium sized industrial boilers. Figure 6 Table 2 Reference 8