Reaction unit for synthetic production of sebaconitrile and synthetic technique of sebaconitrile

Abstract

A reaction unit for synthetic production of sebaconitrile comprises an ammoniating kettle, an ammonia cooler, a gas-liquid separator, a crude sebaconitrile receiving tank, a crude sebaconitrile conveying pump, a crude sebaconitrile distillation kettle, a crude sebaconitrile distillation column, a fine sebaconitrile cooler, a fine sebaconitrile receiving tank, a high-low boiling receiving tank and an evacuating system; the ammoniating kettle in the reaction unit allows full contact of reaction materials and allow reaction condition parameters, such as temperature and pressure, to be well adjusted, full ammoniating of the materials is guaranteed, the synthetic technique allows the materials to be fully and reasonably utilized in maximum extent, and the yield and purity of the finished sebaconitrile are guaranteed; the reaction unit for synthetic production of sebaconitrile is reasonable in layout, the technique is highly operable, the temperatures of the parts in the reaction unit, such as the ammoniating kettle and the crude sebaconitrile distillation kettle, are easy to adjust, the parts are convenient to operate, and the reaction unit has high overall recycling rate of materials, and has high production precision and quality.

Description

technical field [0001] The invention relates to the technical field of synthesis and preparation of sebaconitrile, in particular to a reaction device for synthesis and production of sebaconitrile and a synthesis process for sebaconitrile. Background technique [0002] Sebaconitrile is an important chemical raw material, mainly used in the synthesis of nylon 1010, and can also be used in pharmaceutical, printing and dyeing industries. The chemical name of nylon 1010 is polydecanediamine sebacate, referred to as nylon 1010 (PA1010). It is a unique nylon product in my country. It was first put into production by Shanghai Saihuluo Factory. PA1010 is produced by polycondensation of decanediamine and sebacic acid, and decanediamine is produced by hydrogenation of sebaconitrile. [0003] In the prior art, there are three main methods for preparing sebaconitrile: 1. It is prepared by condensation reaction of acetonitrile and 1,6-dibromohexane; 2. It is prepared by adding trifluoroa...

AI Technical Summary

Problems solved by technology

The reaction time of the ammoniation step itself is long, and the operation steps such as temperature adjustment are relatively complicated. The existing sebaconitrile synthesis production device is easy to cause the reaction time of the ammoniation step to be too long due to the unreasonable structure of the reactor in the ammoniation reaction. , the operating temperature is difficult to accurately grasp, the ammoniation reaction is not complete, the organic matter is easy to carbonize during the synthesis process, there are many by-products, the production efficiency is low, and the production accuracy of the finished product is difficult to guarantee

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