降低粉煤灰含碳量的途径

Solutions for Reducing Carbon Concentration in Power Plant Fly Ash.

粉煤灰中碳的含量，是直接影响粉煤灰综合利用的重要因素之一。可以采用不同的途径降低粉煤灰中碳的水平。在燃烧过程中，通过锅炉改造，调整锅炉内的燃料条件，使煤能够充分燃烧，从而降低含碳量。当排出的粉煤灰含碳量较高时，采用电选、浮选、燃烧等方法可除掉粉煤灰中部分未燃尽碳。在降低了含碳量后，粉煤灰的质量得到很大提高，从而提高了粉煤灰的综合利用水平。本文介绍了国内外先进的粉煤灰除碳技术和方法。

Carbon content in fly ash has directinfluence on its comprehensive utilization. Several solutions are available for reducing carbon concentration infly ash. Carbon concentration can be reduced by improving the combustion condition in the boiler to fulfill abetter combustion result. It is also possible to realize this purpose by applying electronic preparation,flotation and burning, so that the unburnt carbon is eliminated. This article gives a brief account about theadvanced techniques and methods used for reducing carbon content in fly ash both at home and abroad.