a stirred reactor

Abstract

The invention relates to a stirred reactor. The stirred reactor comprises a cylindrical kettle body, a stirring shaft axially arranged in the kettle body, and a transmission device for driving the stirring shaft to rotate, wherein the stirring shaft is located on the axial center line of the kettle body, at least three layers of stirrers are arranged from top to bottom on the stirring shaft, each layer of the stirrer comprises two blades which are perpendicular to each other, and the two blades are symmetrically arranged at both sides of the stirring shaft, namely, one blade is horizontally arranged and the other blade is vertically arranged. According to the stirred reactor disclosed by the invention, by virtue of the vertically arranged blade, liquid flows in the axial direction, and a horizontal shear force is provided by the horizontally arranged blade to offset the vortex to be formed, so that the liquid can flow only in the axial direction; by arranging a plurality of layers of stirrers, the upward movement speed of bubbles is increased layer by layer when the upward movement speed of bubbles is decreased, the mass transfer efficiency of bubbles is enhanced, the fermentation time is shortened, and thus the efficiency of fermentation is improved.

Description

technical field [0001] The invention relates to a gas-liquid reactor, in particular to a stirred reactor. Background technique [0002] Stirred tank reactors are often used in the research and application of microbial fermentation, chemical synthesis, etc., and consist of a stirring shaft (including shaft seal), a transmission device, an impeller (stirring paddle) and a kettle body; the kettle body includes a cylinder, a jacket and internal parts , coil, guide tube, etc. There are hundreds of types of stirred tank reactors used in industry. According to the phase state of the reaction materials, they can be divided into two categories: homogeneous reactors and heterogeneous reactors. Heterogeneous reactors include solid-liquid reactors. Liquid-liquid reactors, gas-liquid reactors and gas-liquid-solid three-phase reactors. [0003] When the existing gas-liquid reactor is fermenting microorganisms, it uses a propulsion agitator to stir, and the gas entering from the bottom o...

AI Technical Summary

Problems solved by technology

However, the propulsive agitator will cause the liquid to form a vortex during the stirring process, and some air bubbles will stay in the vortex layer, and only a small part of the air bubbles will flow axially to the top, which affects the efficiency and quality of fermentation, and prolongs the fermentation. time, more gas needs to be introduced for gas-liquid reaction, which increases the production cost

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