Gas-liquid distributor

Abstract

The invention relates to the technical field of reactor internals, in particular to a gas-liquid distributor. The gas-liquid distributor comprises a bubble cap, a center pipe and a bubble cap ring; the upper end of the center pipe is arranged in the bubble cap, and is connected with the top wall of the bubble cap, and an annular space is formed between the bubble cap and the center pipe; the lower end of the bubble cap is provided with the bubble cap ring, the bubble cap ring is provided with multiple through holes, and the bubble cap ring is used for filling a gap between the bubble cap and the center pipe. The gas-liquid distributor can enable bubbles to be smaller, improves the capability of purging a catalyst of a material flow, and improves a bed gas volume fraction and material flow impact force, the catalyst near the bubble cap can be rushed up during restarting after shut down, and the possibility that the catalyst enters the annular space of the bubble cap when countercurrent occurs can be reduced to the greatest extent.

Description

technical field [0001] The invention relates to the technical field of reactor internal components, in particular to a gas-liquid distributor. Background technique [0002] Biomass pyrolysis technology can convert low-grade biomass energy (woody raw materials, crop waste) into higher-quality liquid biomass tar (wood tar), and the liquid tar yield of this technology is as high as 65-70%. The produced biomass tar has a complex composition, high moisture content, high corrosiveness, low calorific value, instability and easy condensation, and is difficult to miscible with petroleum products (such as gasoline, diesel, etc.). Since the end of the 1990s, countries around the world have successively started research on the technology of refining fuel oil from biomass tar, among which ebullating bed hydrocracking is considered to be one of the methods with the most potential for development. [0003] The gas-liquid-solid three-phase ebullating bed reactor has been widely used in the...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a gas-liquid distributor to solve the problem in the prior art that after the gas-liquid mixture flows out of the bubble cap, the speed is relatively small, and the impact force on the bottom is relatively small, which easily leads to catalyst deposition. On the other hand, when the counterflow occurs The technical problem of the increased probability of catalyst reverse flow

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