Device for rapidly detecting low-temperature activity of HAN decomposition catalyst

The device for rapidly detecting the low-temperature activity of the HAN decomposition catalyst comprises a transparent box body and an inert gas module, the bottom of the transparent box body is arranged in a low-temperature constant-temperature water bath box, a lifting platform frame is mounted at the bottom of the transparent box body, and the lifting platform frame is further fixedly mounted on the side wall of a low-temperature constant-temperature water bath pool; a circular groove is formed in the bottom of the constant-temperature bottom shell and used for containing a catalyst and a temperature measuring thermocouple for testing the temperature of the catalyst, and a blind hole is formed near the circular groove and used for inserting a bottom shell temperature measuring thermocouple for testing the temperature of the bottom shell. The temperature thermocouple and the bottom shell temperature thermocouple are connected to a through-wall type sealing connector on the side wall of the shell of the box