Stirring reactor and application thereof in condensation reaction of Grignard reagent

Abstract

The invention discloses a stirring reactor and application thereof in condensation reaction of a Grignard reagent. The reactor comprises a kettle body, a stirring device, a cooling device and a feeding device, wherein the stirring device comprises a stirring shaft, a driving mechanism for driving the stirring shaft and a stirring paddle fixedly connected with the stirring shaft; the stirring paddle is formed by at least one blade group; the blade group comprises a hub in the center of which a through hole is formed, a disk which is fixedly connected onto the periphery of the hub and a plurality of blades which are uniformly connected onto the disk; the hub is mounted on the stirring shaft through the through hole in a sleeving manner; the root and the end part of each blade form a torsion angle of 5 to 90 DEG; and the included angle between the edge of the root of each blade and the plane perpendicular to the stirring shaft is 5 to 90 DEG. Through the stirring reactor, the mixing effect is excellent, no mixing dead zone can be generated, and materials can be distributed uniformly, so that the stirring reactor is particularly suitable for the condensation reaction.

Description

technical field [0001] The invention relates to a stirred reactor, in particular to a stirred reactor used for the condensation reaction of Grignard reagents and an application thereof. Background technique [0002] Condensation reaction is a reaction in which two or more organic molecules are covalently bonded to form a macromolecule after interacting with each other, often accompanied by the reaction of losing small molecules (such as water, hydrogen chloride, alcohol, etc.). Under the action of catalysis, commonly used condensing agents include alkali, sodium alkoxide, and inorganic acids. When the condensation reaction of Grignard reagent is carried out, solid particles need to be added, and the suspension of solid particles is very important. Axial flow stirrer is commonly used in industry. The most commonly used axial flow agitator is the propeller, and the discharge flow of the propeller and the flow of the suction liquid are relatively regular axial flows. In order...

AI Technical Summary

Problems solved by technology

If only from the perspective of cooling effect, a good cooling effect can be obtained by installing a cooling mechanism in the stirred reactor. However, the setting of the cooling mechanism will affect the flow of materials and make the composition of the stirred reactor complicated, so that local It is more prone to side reactions, causing the product to fail to meet the requirements

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