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流化床气化用煤粒度的问题

2020-01-02View Original

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如题,流化床气化用煤的粒度要求,粒度范围由0~10mm到0~2mm对气化有什么影响?
Reply #22020-01-02
本帖最后由 liaifeng 于 2020-1-2 23:59 编辑 对于流化床而言,对于固体颗粒的大小其实都有要求的,不能一味的偏大或偏小。 偏小流化好,但是相对损耗也大;偏大的话,流化在一定程度上就有影响了! 另外流化对颗粒的形状,圆整度等很多方面都有要求。 刚才搜索了下,论坛关于流态化的书籍不少呢;P
Reply #32020-03-06
煤的反应活性高,粒度可以大一点,活性小,粒度可以小一点。
Reply #42020-03-11
主要根据选择的炉型定。以恩德炉为例,0~10mm粒度的煤适合该炉型,其中3~7mm粒度最为适合其反应。如果0~2mm粒度过多,在炉内反应时间短,生成气体又在炉内燃烧,造成能源浪费和局部温度过高。不利于整个炉内的气化反应。

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