Continuous production system of azo reactive dyes using supergravity

Abstract

The invention provides a continuous production system for azo reactive dyes using supergravity, combining the spiral coil reactor with the supergravity technology, and treating the diazotization reaction and the coupling reaction differently, and the diazotization reaction is carried out in the spiral coil reactor The high gravity reactor used for coupling reaction can greatly improve the conversion rate and the quality of the product. The spiral coil reactor can precisely control the temperature and avoid the decomposition of the diazonium salt. With this combination, due to the precise temperature control, the decomposition of the diazonium salt is very small, which will not affect the subsequent coupling reaction, so it can ensure continuous production. The concentration of the diazonium salt is maintained in a relatively high range, so as to ensure that the performance of the same batch of azo reactive dyes is close to or the same, and meets the actual needs of the industry. Further, a disturbing member is provided in the spiral coil, which can disturb the reaction solution in the spiral coil reactor, speed up the flow and mixing of the reaction solution, and facilitate the homogeneous reaction.

Description

technical field [0001] The invention relates to the technical field of preparation of azo reactive dyes. More specifically, it relates to a continuous production system of azo reactive dyes using supergravity. Background technique [0002] Industrially, the production of reactive azo dyes is carried out in batch operation in stirred tank reactors. Due to the complexity of the organic reaction and the large volume of the stirred tank reactor, the temperature and mixing effect of the material are difficult to achieve uniformity in local areas, the production efficiency of the dye is low, and the batches of dyes produced by the batch stirred tank are quite different. , the post-processing of the dye and the application of the dye have all brought inconvenience. [0003] Therefore, there is an urgent need to provide a continuous production system for azo reactive dyes using supergravity. Contents of the invention [0004] In view of this, in order to solve the current lack ...

AI Technical Summary

Problems solved by technology

Due to the complexity of the organic reaction and the large volume of the stirred tank reactor, the temperature and mixing effect of the material are difficult to achieve uniformity in local areas, the production efficiency of the dye is low, and the batches of dyes produced by the batch stirred tank are quite different. , the post-processing of the dye and the application of the dye have brought inconvenience

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