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US08950345B2 Pulverized coal burner and pulverized coal boiler having it 有权
粉煤燃烧器和粉煤锅炉

Pulverized coal burner and pulverized coal boiler having it
摘要：
A pulverized coal burner and a pulverized coal boiler. The coal burner comprises a primary air cylinder (111) and a pulverized coal concentration device (112). The coal concentration device (112) makes the concentration of the coal flow gradually decrease from inside to outside along the radial direction, with respect to an axis (100) of the primary air cylinder (111). The coal burner further comprises a coal separating cylinder (113) and a coal guiding cylinder (114) located downstream of the device (112), the rear end of the cylinder (113) is connected with the front end of the coal guiding cylinder (114). The outlet of the cylinder (114) has a conical expansion portion (1141). The coal burner further comprises a divergent nozzle (115) connected with the rear end of the primary air cylinder (111) and whose cross-sectional area gradually increases along the flow direction of the coal flow.
摘要（中）：

粉煤燃烧器和粉煤锅炉。 煤燃烧器包括主气缸（111）和粉煤浓缩装置（112）。 煤浓缩装置（112）使得煤流的浓度相对于主气缸（111）的轴线（100）沿径向从内向外逐渐减小。 煤燃烧器还包括煤分离筒（113）和位于装置（112）下游的导煤筒（114），气缸（113）的后端与导煤筒（ 114）。 气缸（114）的出口具有锥形膨胀部分（1141）。 煤燃烧器还包括与主气缸（111）的后端连接的扩散喷嘴（115），其横截面积沿着煤流的流动方向逐渐增加。

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