Lime kiln head flue gas waste heat utilization system

The invention relates to the field of energy conservation and consumption reduction, in particular to a lime kiln head flue gas waste heat utilization system. A lime kiln head flue gas waste heat utilization system comprises a rotary kiln body, a preheater, a bag-type dust collector, a denitration reactor, a heat recovery device, an induced draft fan and a chimney, and further comprises a high-temperature heat extraction flue, an air mixing adjusting system, a gravity dust removal system, a heat compensation adjusting system and a flue gas mixing system. The device has the advantages of being unique in device, small in power consumption, low in investment and the like, a heat extraction heat source can be popularized to various types of rotary kilns, and heat utilization can be achieved through a smoke treatment device heat supplementing heat source, a waste heat boiler device heat supplementing heat source, a process pulverized coal heating heat source and the like. 本发明涉及节能降耗领域，尤其涉及一种石灰窑窑头烟气余热利用系统。一种石灰窑窑头烟气余