PROCESSING METHOD OF WASTE GAS OF COAL BOILER

摘要

PURPOSE:To enable an easy deamination of NH4 salt from fly ash without using a particular deaminating device only by throwing the fly ash including NH4 salt into a circulative gas. CONSTITUTION:The fly ash generated from the boiler 1, passing thoug a denitrating device 2 and an air preheater 3, is gathered by a low temperature electric ash collecting device 4 as in the NH4 salt attached state. The fly ash attached with the NH4 salt and gathered by the device 4 is then thrown into the circulative gas to the boiler 1 and finally collected by the ash collector 9 which is provided for protecting a circulation blower 10. In this while, the fly ash is heated by a large amount of circulative gas and deaminated. Thus the deamination of NH4 salt from the fly ash can be easily performed without using any particular device.