A kind of preparation method and storage device of 3-chloro-2,6-diethylaniline

Abstract

The invention discloses a preparation method and storage device of 3-chloro-2,6-diethylaniline, and specifically includes: (1) preparation of catalyst; (2) ethylation / replacement reaction; (3) hydrolysis of catalyst; (4) separation; (5) adopt storage device to carry out sealed storage to 3-chloro-2,6-diethylaniline; (6) store the storage device in a cool, ventilated, dry warehouse. In the present invention, a high-pressure sealant injection gun can be used to inject sealant in the area between the outer side of the barrel cover and the inner side of the outer shell. The area between the galvanized iron barrels is sealed to improve the tightness of the galvanized iron barrels, to avoid the leakage of 3-chloro-2,6-diethylaniline during transportation, and to avoid the 3-chloro-2,6-diethylamine in the galvanized iron barrels. Oxidation of aniline occurs, making the 3-chloro-2,6-diethylaniline in the galvanized iron barrel meet the standard.

Description

technical field [0001] The invention belongs to the technical field of preparation and sealed storage of 3-chloro-2,6-diethylaniline, and in particular relates to a preparation method and storage device of 3-chloro-2,6-diethylaniline. Background technique [0002] In the prior art, the preparation method of 3-chloro-2,6-diethylaniline (CDEA) is generated by the reaction of 2,6-diethylaniline (DEA) and chlorine gas, which is formed by the diazonium diazonium salt of arylamine. The radical is replaced with a halogen to give 3-chloro-2,6-diethylaniline. The reaction process uses chlorine gas, which is a highly toxic chemical and is extremely corrosive. Because the bond energy of the diazo group is relatively large and relatively stable, the reaction conditions are relatively harsh during halogen replacement, high temperature, high pressure and corrosion-resistant equipment are required. The main raw material of the reaction, 2,6-diethylaniline (DEA), requires inert gas protec...

AI Technical Summary

Problems solved by technology

At present, 3-chloro-2,6-diethylaniline is stored in a special galvanized iron drum, which is sealed by the lid of the galvanized iron drum. However, the lid is threaded on the top of the galvanized iron drum. During storage or transportation, 3 -Chloro-2,6-diethylaniline is easy to seep out, causing external environmental pollution, and 3-chloro-2,6-diethylaniline in the galvanized iron drum is prone to oxidation, and the color becomes darker, resulting in 3-Chloro-2,6-diethylaniline does not meet the standard

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