Calcination exhaust device and method of calcination device

A calcination exhaust device of a calcination device comprises an air filter, a condensation trap, a baffle trap and a tail gas trap liquid collector. Wherein the air filter is connected with the condensation trap, the condensation trap is connected with the tail gas trapping liquid collector, the tail gas trapping liquid collector is communicated with the baffle trap, and the baffle trap is connected with the tail gas treatment system and the tail gas trapping liquid collector. A calcination exhaust method of the calcination device comprises the following steps that S1, tail gas containing radioactive materials enters the air filter through the pipeline to be filtered; s2, the filtered tail gas enters a condensation trap, and cooling treatment is conducted on the tail gas; s3, the cooled tail gas enters a tail gas trapping liquid collector to be collected and temporarily stored, and S4, the tail gas passing through the tail gas trapping liquid collector enters a baffle trap and finally enters a tail gas trea