Test device for detecting comprehensive performance of denitration catalyst and application method thereof

The invention discloses a test device for detecting comprehensive performance of a denitration catalyst. The test device comprises a multi-path gas introduction device, a mixer, a heater, a reaction container, a measuring system, a data acquisition system, a control system and a reaction assisting reactor. The multi-path gas introduction device is used for mixing various gases introduced into the mixer. The heater is used for heating the gases mixed in the mixer. A heating device and a catalysis plate are arranged in the reaction container, and used for making the heated mixed gases react in the reaction container. The measuring system is used for detecting gas concentration, temperature and pressure data before and after the mixed gases are reacted. The data acquisition system is used for receiving and analyzing data transmitted by the measuring system. The control system is used for controlling work of the measuring system. The reaction assisting device is used for assisting implementation of reaction of the mixed gases. By means of the test device, components of the mixed gases can be conveniently controlled, various environment parameters of the catalyst are adjusted, and accordingly comprehensive performance testing of the denitration catalyst is achieved.