A gas-liquid distributor for ebullated bed reactor

Abstract

The invention discloses a gas-liquid distributor for a fluidized bed reactor, which is mainly composed of a central tube, a bubble cap, a float valve and a valve seat; There is a material inlet, and the bubble cap is a barrel with one end open, which is covered at the upper end of the central tube. The bubble cap axially runs through the slit at the end, and the inner wall of the bubble cap barrel is uniformly equipped with a conical truncated; the float valve is composed of a valve top plate and a steady flow leg, and the float valve cover is above the valve seat and can move up and down along the center pipe axis; A Venturi throat is arranged in the central tube near the valve seat in the middle section of the central tube. Adoption of the present invention can not only ensure that the gas is broken into continuous microbubbles in the liquid, but also effectively solve or alleviate the problem of countercurrent blockage of the material carrying the catalyst when the gas-liquid pressure is unstable or the gas-liquid feeding is suddenly interrupted, and at the same time reduce the The flow dead zone inside the distributor is eliminated, and the pressure drop is 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