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粉末输送泵使粉煤灰的综合利用更有利

Time: 2016/9/20 11:58:54


其实现如今我国许多火力发电厂采用的水力输灰系统(湿除灰),是以水为输送介质和动力。存在许多缺点,只是因为粉末输送泵的推广不是很到位,所以许多火力发电厂在粉煤灰的输送上还是采用很久遗留下来的办法。
      早在10年前,我国火力发电厂粉煤灰的年排放量已达1.6亿吨以上,而利用率却仅有32%?。粉煤灰预处理技术的相对落后是粉煤灰利用率不高的原因之一,而粉煤灰的输送是一个关键问题。
       粉末输送泵  是以空气为输送介质和动力的气力输灰系统(于除灰),能保持粉煤灰在输送过程中呈干燥状态,可保持灰的活性不变、有利于粉煤灰的综合利用。高压低速流态化浓相气力输送(固气质量比大于1O)粉煤灰系统,突破了其它形式的气力输灰系统在输送距离、输送浓度等方面的限制,具有气源设备简单、输送浓度高(固气质量比可达30)、输送速度低(7rn/s左右)、输送距离远(可达1km公里以上)、输送管径小、投资费用少、运行费用低、操作与维护简单、工作运行可靠等特点,有利于火力发电厂的粉煤灰的综合应用。

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