Continuous production system for azo reactive dyes by applying hyper gravity

Abstract

The invention provides a continuous production system for azo reactive dyes by applying hyper gravity, the continuous production system combines a spiral coil reactor and a hyper gravity technology, and treats diazotization reaction and coupling reaction differently, the diazotization reaction is carried out in the spiral coil reactor, and the conversion rate and product quality can be greatly improved by using a hyper gravity reactor for coupling reaction. However, the spiral coil reactor can accurately control the temperature and avoid decomposition of diazonium salt. In this way, due to accurate temperature control, the decomposition of the diazonium salt is extremely small and may not affect the subsequent coupling reaction, thus ensuring that the concentration of the diazonium salt ismaintained in a higher range during continuous production, thus ensuring that the performance of the azo reactive dyes in the same batch is close to or the same, and meeting the actual needs of industry. Furthermore, a disturbing piece is arranged in a spiral coil, so that a reaction solution in the spiral coil reactor can be disturbed, the flow and mixing of the reaction solution are accelerated, and the homogenization reaction is facilitated.

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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