Oscillatory flow reactor of packed bed

Abstract

The invention discloses an oscillatory flow reactor of a packed bed. The oscillatory flow reactor comprises an oscillation generating mechanism, an inlet segment, a reaction segment and an outlet segment which are sequentially connected, wherein the inlet segment is composed of an air inlet segment and a liquid inlet segment which are connected in series, and the outlet segment is composed of an air outlet segment and a liquid outlet segment which are connected in series; the air inlet segment is provided with an air feeding hole and an air distributor located at the downstream of an air discharging hole; the liquid inlet segment is provided with a liquid feeding hole and a liquid distributor located at the downstream of a liquid discharging hole; the reaction segment is provided with a vertically-arranged reaction tube which is filled with filler or solid catalyst particles in the middle, a supporting device at the bottom and a pressing device at the top. The oscillatory flow reactor of the packed bed is suitable for industrial gas-liquid reaction taking the liquid phase as a main body, gas-liquid-liquid reaction or gas-liquid-solid three-phase reaction system containing a solid catalyst and can continuously and stably operate for a long term.

Description

technical field [0001] The invention relates to a chemical reactor, in particular to a packed bed oscillatory flow reactor. Background technique [0002] For gas-liquid, gas-liquid-liquid or gas-liquid-solid multiphase flow catalytic or non-catalytic reaction process, the transfer performance between gas-liquid, gas-liquid-liquid or gas-liquid-solid interphase greatly affects the final reaction effect, as a dispersed phase The dispersion form and size of the gas phase or liquid phase in the liquid phase body are necessary to achieve good mixing and excellent transfer performance in the reactor. The traditional way to enhance mixing and transmission effect is mostly to use stirring device to enhance the macroscopic turbulence intensity and realize overall mixing. However, "dead zones" often appear during the mixing process, resulting in insufficient mixing of materials. [0003] Oscillating flow tube reactor is a new type of chemical reaction equipment with broad applicatio...

AI Technical Summary

Problems solved by technology

However, when this reactor is applied to the reaction process of gas-liquid or gas-liquid-liquid multiphase flow, due to the coalescence of bubbles or droplets during the rising process, it cannot always ensure the stability of the dispersed phase shape and the uniformity of size, resulting in phase boundaries. The area is reduced, and the update of the phase interface is slow, which reduces the mixing and transfer effect between phases

When applied to a reaction system with a solid phase as a catalyst, the collision and wear between particles and the pulverization of particles in the liquid phase body make the uniform suspension performance of the catalyst in the reactor worse, increasing the instability of the operation

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