Gas-liquid distributor for fluidized bed reactor

Abstract

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.

Description

technical field [0001] The invention relates to an internal component of a reactor, in particular to a gas-liquid distributor for an ebullated bed reactor. Background technique [0002] The gas-liquid-solid three-phase ebullating bed reactor has been widely used in the industrial reaction process. For the reaction process with a large reaction heat, the use of the three-phase ebullating bed reactor can effectively remove the reaction heat and realize the isothermal operation of the reactor. To ensure the normal operation of the reactor. In the three-phase ebullating bed reactor, the gas-liquid distributor is an important internal component to ensure the uniform distribution of gas in the bed, which directly affects the smooth operation and reaction efficiency of the reactor. [0003] At present, the fluidized bed gas-liquid distributors in domestic and foreign published patents can be divided into two categories according to their functional characteristics: shut-off type (...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the technical problems existing in the prior art that are prone to plug flow and pulsating flow, large disturbance of the check ball and wear of the opening of the distribution plate, the present invention provides a gas-liquid distributor for ebullated bed reactors, The gas-liquid distributor can strengthen gas-liquid mixing and realize continuous and uniform gas-liquid feeding. There is no flow dead zone inside the distributor, and the swirl and pressure drop are relatively small.

Images