Flue gas heat exchange device applied to dust removal system in dry quenching environment

The utility model discloses a flue gas heat exchange device applied to a dry quenching environment dust removal system, which comprises an environment dust remover, a high-temperature flue connected to an inlet of the environment dust remover and used for collecting high-temperature flue gas in the environment, and an air cooling heat exchanger used for cooling the high-temperature flue gas, the air cooling heat exchanger is arranged on the high-temperature flue and located at the front end of the environment dust remover. For an environment dust remover which is already built and put into use, when the cooling effect of a flame arrester in an environment dust removal system of the environment dust remover cannot meet the temperature requirement of the environment dust remover, an air cooling heat exchanger is additionally arranged at the front end of the environment dust remover, so that flue gas in a high-temperature flue enters the environment dust remover after being subjected to heat exchange and cooling