Efficient tail gas trapping device for pyromellitic dianhydride catalyst evaluation

The utility model discloses an efficient tail gas trapping device for evaluating a pyromellitic dianhydride catalyst. The trapping device comprises a trapping device barrel and a material receiving barrel, wherein the bottom of the trapping device barrel is connected with the material receiving barrel in a sealing manner; the top of the trap cylinder is connected with a sealing blind plate, and a vibration block is arranged above the sealing blind plate; a screen and a screen fixing rod are arranged in the trap cylinder, and the screen fixing rod penetrates through the sealing blind plate and the vibration block; the vibration block comprises a vibration block I and a vibration block II, the vibration block I is fixedly connected with the sealing blind plate, and the vibration block II is fixedly connected with the screen fixing rod; the vibrating block I is hermetically connected with the screen fixing rod through the sealing flexible connector, one end of the hose is fixedly connected with the sealing blind