Apparatus and method for reaction

Abstract

Provided are an apparatus and a method for reaction for use in a co-precipitation reaction for producing a catalyst or a cathode active material for a lithium secondary battery, which injects a raw material (a solution) at least between impellers according to the level in a vessel, thereby making a stirring speed uniform and, in particular, minimizing a concentration difference between solutions.The apparatus for the reaction may comprise: a reaction vessel; a stirring means provided inside the reaction vessel and having multi-staged impellers; and a raw material injecting means, comprising at least one injection nozzle connected to the reaction vessel, for injecting a raw material at least between impellers.

Description

technical field [0001] The present invention relates to reaction equipment and methods. More specifically, the present invention relates to a reaction device and method, in which a raw material (solution) is added to at least the space between the impellers corresponding to the liquid level in the container in the co-precipitation reaction for preparing the positive electrode active material of the lithium secondary battery Space, so that the stirring becomes uniform, especially to minimize the concentration difference between the solutions. Background technique [0002] Recently, with the increase in demand for mobile devices such as smartphones and notebook computers and the growth of the market for hybrid or electric vehicles, the demand for secondary batteries as energy sources has rapidly increased. Among these secondary batteries, lithium secondary batteries having high energy density and operating voltage, long cycle life, and low self-discharge rate are widely used....

AI Technical Summary

Problems solved by technology

However, there are limitations in this technology, and continuous stirred tank reactor (CSTR) and Taylor vortex (Taylor vortex) reactor cannot be used, and it can only be prepared in a batch mode, and the batch mode requires a long reaction time, and the stirring speed is slow. Therefore, it is difficult to expand the scale of the reaction. Compared with the continuous stirred tank reactor (CSTR), there are problems of high production cost, decreased productivity, and decreased sphericity of the precursor.

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