The utility model provides a pulverized coal conveying device for pulverized coal pressurized gasification, which makes the gas flow intensity layer in the air chamber step distribution, guarantees the air flow from the air chamber into the porous air cone, and the air flow intensity at the small cone end closer to the porous air cone is larger, thus making the various areas of pulverized coal in the porous air cone. The fluidization degree is better, avoiding the bridging of pulverized coal particles to ensure the pulverized coal conveying effect; including a conical shell with a porous inflatable cone inside the shell, a triangular inflatable chamber formed between the shell and the porous inflatable cone, an inlet pipe is arranged on the side wall of the shell, and a powder outlet is arranged at the bottom of the shell, and the porous filling is arranged. The small cone end of the gas cone contacts with the inner wall of the shell at the powder outlet and is sealed by a rubber plug. A conical shell and a porous inflatable cone are arranged to cooperate to form an inflatable chamber with a conical cylinder, which can effectively differentiate the air flow and make the pulverized coal fluidized better in each area of the porous inflatable cone, so as to make the pulverized coal cutting more smoothly.
【技术实现步骤摘要】
一种用于粉煤加压气化的粉煤输送装置
本技术涉及煤气化装置,具体涉及一种用于粉煤加压气化的粉煤输送装置。
技术介绍
在干粉煤气化工艺中,粉煤的输送方式为加压密相气体输送。在输送过程当中,既要求粉煤不堆积在输送管道内部形成搭桥现象而造成输送管线的堵塞,又要求各个输送管线的气相输送速率一致、气固比相同,各个输送管线之间的不一致和输送状况的波动会对气化炉的运行造成影响。目前,大多应用粉煤仓罐、充气锥、通气管、气体注入装置、流化盘等充气布气装置来实现粉煤输送。专利申请号201220217790.5《粉煤气化装置的充气锥》(公开号CN202625048U,公开日2012年12月26日)提供了一种能够承受更高压差的充气锥,通过在烧结金属锥筒体的内壁设置开有多个通孔的不锈钢加强件(即打孔锥管),来使充气锥可承受的内外压差由1MPa提高到5MPa,从而降低了充气锥的损坏几率、减少了整体装置的停车次数、提高了充气锥的使用寿命、降低了成本,同时还能有效防止粉煤倒流、保证粉煤输送效果。专利申请号201020573502.0《一种多孔充气锥》(公开号201864703U,公开日2011年6月15日)提供了一种以航天炉粉煤气化技术为背景的多孔充气锥,包括支撑与连接主体设备用的承压锥体外壳和作为充气功能内件的在壳体侧壁上均布的4~9mm的通气孔,可使气体在充气锥内表面分布均匀、减少煤粉颗粒与锥体表面的摩擦、保证输送粉煤顺畅。上述各充气锥或多孔锥的整体装配结构,主要针对充气锥的材质或是其气孔大小,用于防止粉煤倒流、保证粉煤输送效果,但是在实践中,发现充气锥与外壳之间的充气腔室形状也会影响 ...
【技术保护点】
1.一种用于粉煤加压气化的粉煤输送装置,包括外壳,在所述外壳内装有多孔充气锥,所述外壳和多孔充气锥之间形成充气腔室,在所述外壳的侧壁上设有进气管,其特征在于:所述外壳为圆锥型,在所述外壳的底部开设有出粉口,所述多孔充气锥的小锥端在所述出粉口处与所述外壳的内壁接触并密封连接,所述充气腔室的截面为三角形。
【技术特征摘要】
1.一种用于粉煤加压气化的粉煤输送装置,包括外壳,在所述外壳内装有多孔充气锥,所述外壳和多孔充气锥之间形成充气腔室,在所述外壳的侧壁上设有进气管,其特征在于:所述外壳为圆锥型,在所述外壳的底部开设有出粉口,所述多孔充气锥的小锥端在所述出粉口处与所述外壳的内壁接触并密封连接,所述充气腔室的截面为三角形。2.根据权利要求1所述的一种用于粉煤加压气化的粉煤输送装置,其特征在于:...
【专利技术属性】
技术研发人员:侯卡立,刘金贵,孙流强,张红兵,吴军胜,杜书昌,李西亚,马超,陈新志,幸绍军,
申请(专利权)人:新乡中新化工有限责任公司,
类型:新型
国别省市:河南,41
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