Fecha de publicación: 07/04/2023 Fuente: WIPO "circular economy" The utility model discloses a catalyst activity evaluation and detection device, and belongs to the technical field of catalyst activity evaluation. The device adopts a newly designed gas mixer, not only realizes gas mixing and gas heating at the same time, but also designs a movable bottom plate aiming at the problem that gas for a catalyst activity evaluation test has corrosivity, and integrates a fan and a gas baffle on the bottom plate, so that the device is more convenient to clean and overhaul, and the service life of the device is prolonged. And the service life of the mixer is prolonged. Through the design of the utility model, the gas is uniformly mixed before entering the reactor, and reaches the preset temperature, so that the temperature difference in the reactor is reduced, and the accuracy of experimental data is greatly improved.