Flue gas white smoke eliminating system of heating boiler

The utility model provides a flue gas white smoke eliminating system of a heating boiler, and belongs to the technical field of boilers. The problems that an existing heating boiler is poor in white smoke eliminating effect and insufficient in stability are solved. The utility model discloses a flue gas white smoke eliminating system of a heating boiler. The boiler comprises a boiler body and a chimney, characterized in that it is characterized in that it comprises, a first-stage energy saver, a second-stage energy saver, a condenser, a condensing device, a preheating and whitening device, a mixing and accelerating device and a chimney are sequentially connected between the boiler body and the chimney. A primary heating water circulation pipeline is arranged between the boiler body and theprimary economizer, a secondary heating water circulation pipeline is arranged between the secondary economizer and the condenser, and an air pipeline used for introducing preheated air is connectedto the mixing acceleration