Waste gas treatment device

The invention relates to the technical field of waste gas treatment devices, and discloses a waste gas treatment device which comprises a ship body, an exhaust pipe is fixedly assembled on the outer edge of the ship body, an exhaust assembly is fixedly assembled at the bottom of the inner wall of the exhaust pipe, a first filter assembly is arranged on the inner wall of the exhaust pipe, and a second filter assembly is arranged on the inner wall of the exhaust pipe. A sealing assembly is arranged on the outer edge of the exhaust pipe, a catalytic decomposition assembly is fixedly assembled on the outer edge of the exhaust pipe, a gas guide pipe is fixedly assembled on the outer edge of the catalytic decomposition assembly, and a gas non-return assembly is arranged on the inner wall of the gas guide pipe. According to the floating type production oil storage and offloading ship, waste gas generated by petroleum processing through the floating type production oil storage and offloading ship can be filtered, so