Anti-air-leakage flue gas collection waste heat utilization device

The utility model discloses an air leakage prevention flue gas collection waste heat utilization device which comprises a base serving as a bottom support, an annular cooler body for preheating waste gas is arranged on one side above the base, a sintering machine for preheating utilization is arranged on the other side above the base, and filter protection structures for waste gas waste heat filtering and heat preservation on the two sides of the annular cooler body are arranged on the two sides of the annular cooler body. One side of the filter protection structure is provided with a blowing structure for conveying and utilizing heat preservation waste heat, the filter protection structure comprises a first fan for conveying waste heat waste gas into the dust remover through a first connecting pipe and a second connecting pipe, and one side of the first fan is provided with a second fan for conveying waste heat into the heat preservation box through a third connecting pipe for heat preservation; according to