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对具有中心管和多级切向进风结构的新型燃煤涡旋燃烧炉的冷态流动与混合特性及煤燃烧特性分别进行了冷、热态实验或数值模拟。冷态实验给出包括中心管在内的整个炉内流场的速度分布。冷态实验和数值模拟还给出分级喷入的二次风在炉内的混合特性。热态实验证实涡旋燃烧炉在较大的热负荷变化范围均具有较高煤粉燃烧效率，ＮＯｘ排放量可控制在一定范围以内，炉内的温度水平可保证固态排渣的实现。图６参５
The cold flow and the thermal experiment or the numerical simulation of the cold flow and mixing characteristics and the coal combustion characteristics of a new type of coal-fired scroll combustion furnace with a central tube and a multi-stage tangential inlet air structure are respectively carried out. The cold experiment gives the velocity distribution of the flow field in the furnace, including the central tube. Cold state experiments and numerical simulations also show the mixing characteristics of the secondary air injected into the furnace in a stepwise manner. Thermal experiments show that the vortex burner has higher combustion efficiency of pulverized coal in the range of larger heat load, NOx emission can be controlled within a certain range, and the temperature inside the furnace can ensure solid slag discharge. Figure 6 reference 5