The invention discloses a gas-liquid
distributor for a
fluidized bed reactor. The gas-liquid
distributor mainly comprises a center
pipe, a bell cap, a floating valve and a valve base, wherein a material outlet is formed in the
pipe wall at the end part of the upper section of the center
pipe, a material inlet is formed in the lower section of the center pipe, the bell cap is a cover-shaped object which is opened in one end, and covers the end part of the upper section of the center pipe, the blind end of the bell cap is fixedly connected with the end part of the upper section of the center pipe; the valve base is a ring-shaped structure with a valve base hole in the center, the valve base is arranged below the material outlet in the center pipe; the floating valve is of a circular plate-shaped structure, covers above the valve base and can move up and down along the axial direction of the center pipe; a Venturi
throat is arranged in the center pipe, which is close to the valve base, at the middle section of the center pipe. The gas-liquid
distributor can ensure that gas is crushed into continuous micro-bubbles in a liquid, and can effectively solve or relieve the problem of instable gas-
liquid pressure or countercurrent blockage of a material carrying a catalyst when a gas-feed feed is suddenly interrupted; meanwhile, a flowing dead zone inside the distributor is eliminated, and the pressure drop is relatively small.