Oscillatory flow reactor of packed bed

An oscillating flow reactor, packed bed technology, applied in chemical instruments and methods, chemical/physical processes, etc., can solve the problems of slow phase interface renewal, reduced phase interface area, poor uniform suspension performance, etc., and achieve particle loss. And the effect of low degree of pulverization, increase of phase interface area, and increase of contact area

Active Publication Date: 2013-09-11
吴嘉
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Oscillatory flow reactor of packed bed
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Examples

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Embodiment 1

[0039] Such as figure 1Shown is a packed bed oscillating flow reactor, which is used in an industrial gas-liquid-liquid catalytic reaction system. In this reaction system, gas and liquid phase A are reactants, and liquid phase B is a liquid homogeneous catalyst. The oscillation generator is located at the bottom of the reactor, and the packed bed reaction section is divided into upper and lower sections, and each section is connected with a heat exchange jacket for supplying heat to the reactor. The gas inlet section is divided into two sections, which are respectively located at the lower part of the two reaction sections. The gas distributor adopts metal sintered powder filter element structure, and the precision can reach 0.3μm. Liquid phase A and liquid phase B enter the reactor from two liquid inlet sections at the bottom of the reactor respectively, and liquid phase A enters from the upper liquid inlet section, and a liquid distributor is connected to the inlet. The r...

Embodiment 2

[0044] Such as figure 2 Shown is a packed bed oscillating flow reactor, which is used in an industrial gas-liquid-solid catalytic reaction system. The gas and liquid phases are the reactants, and the solid phase is the catalyst, which is filled in the reaction section. The oscillation generator is located at the bottom of the reactor, and the reaction section is divided into upper and lower sections, and each section is connected with a heat exchange jacket. The gas inlet section is divided into two sections, which are respectively located at the lower part of the two-section reaction section. At this time, the sub-feeding inlet is fed with gas materials, and the gas is fed in two-stage feeding. The gas distributor adopts a metal sintered mesh filter structure. Accuracy 2μm. In the gas outlet section, the gas is separated from the liquid phase and leaves the reactor. The liquid phase enters the reactor from the liquid inlet section at the top of the reactor, and is withdra...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/16B01J8/20
Inventor 吴嘉李伟张悦
Owner 吴嘉
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