Self-cleaning type diethyltoluenediamine reaction kettle

Abstract

The invention relates to the technical field of chemical reaction kettles, in particular to a self-cleaning type diethyltoluenediamine reaction kettle. The technical problem is that a wall plate and a machine head stirring blade of a diethyl toluenediamine reaction kettle are difficult to clean. According to the technical scheme, the self-cleaning type diethyltoluenediamine reaction kettle comprises a bottom supporting frame, a reaction kettle body, a liquid discharge valve, a liquid feeding valve, a stirring machine head assembly, a lifting control system, a wall plate cleaning system, a machine head cleaning system and a fragmentation system; the reaction kettle body is welded to the top of the bottom supporting frame. The inner side of the reaction kettle is automatically cleaned, cleaning liquid is added after the reaction kettle is used, the surfaces of the two sides of each wall plate of the reaction kettle and gaps in the connecting positions of the wall plates and the kettle body are sequentially and automatically cleaned, automatic cleaning of the machine head is achieved, and the surfaces of stirring blades of the machine head are prevented from being wrapped by impurities.

Description

technical field [0001] The invention relates to the technical field of chemical reaction kettles, in particular to a self-cleaning diethyltoluenediamine reaction kettle. Background technique [0002] At present, during the processing of diethyltoluenediamine in the prior art, because aromatic amine catalysts are added to the prepared diethyltoluenediamine stock solution, and these catalyst residues and a small amount of aromatic amine derivatives affect the diethyltoluenediamine The purity of the stock solution of toluenediamine, in order to remove such impurities, other reaction liquids will be added again, resulting in the production of various solid impurities during the reaction process, which will then adhere to the inner wall, wall plate and stirring blade of the reaction kettle. The rinsing, spraying and cleaning solution immersion can only dissolve and separate the thin impurity layer on the inner wall of the reaction kettle. During the solution stirring reaction pro...

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Problems solved by technology

[0002] At present, during the processing of diethyltoluenediamine in the prior art, because aromatic amine catalysts are added to the prepared diethyltoluenediamine stock solution, and these catalyst residues and a small amount of aromatic amine derivatives affect the diethyltoluenediamine The purity of the stock solution of toluenediamine, in order to remove such impurities, other reaction liquids will be added again, resulting in the production of various solid impurities during the reaction process, which will then adhere to the inner wall, wall plate and stirring blade of the reaction kettle. The rinsing, spraying and cleaning solution immersion can only dissolve and separate the thin impurity layer on the inner wall of the reaction kettle. During the solution stirring reaction process, the solution will form a vortex backflow when it touches the wall plate during the rotation process to enhance the stirring and mixing effect. At the same time, the impurities adhering to both sides of the wall plate are also thick, and it is difficult to completely remove the impurities on both sides of the wall plate and the gap between the wall plate and the inner surface of the reactor by soaking in the cleaning solution. Regular head stirring blades, it is difficult to wash and clean the stirring blades in a closed reaction kettle

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