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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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低品位热源干燥低阶煤技术研究进展
, PP. 1-6
Keywords: 烟气,蒸汽,低阶煤,脱水提质,干燥,粉尘
Abstract:
脱水提质可提高低阶煤在工业应用（气化、液化和作为固体燃料）中的价值。对目前国内外低阶煤的烟气、蒸汽干燥工艺以及新型的过热蒸汽干燥工艺进行了分析比较。其中烟气干燥工艺使用高温烟气作为中间介质，直接干燥为主，存在自燃和爆炸问题；饱和蒸汽干燥工艺通过间接回转管式干燥器间接加热，废气夹带的粉尘较少，对除尘设备要求较低；过热蒸汽干燥包括内部热循环的流化床蒸汽干燥工艺（wta）、加压蒸汽流化床干燥工艺（psfed）等，具有高能效、高热效、安全等优点。国内的低阶煤干燥主要采用高温烟气直接干燥法。
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