Flame arrester

The utility model discloses a flame arrester, which belongs to the technical field of oxidation furnace auxiliary equipment, solves the technical problem that the flame arrester arranged at the present stage is not easy to clean after being blocked, and comprises a flame arrester body, a gas-solid separation tank, a gas supply pipeline, a gas outlet pipeline and a steam pipeline, and the flame arrester body is vertically arranged; the gas-solid separation tank is arranged at the bottom end of the flame arrester body; the gas supply pipeline is arranged on the side wall of the gas-solid separation tank, and a first valve is arranged on the gas supply pipeline; the gas outlet pipeline is arranged at the upper end of the flame arrester body; the steam pipeline is connected with the air outlet pipeline. The condition of blockage of the flame arrester is relieved; and the cleaning efficiency is high after the flame arrester is blocked, so that the shutdown frequency of the whole machine can be greatly reduced, and