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Preparation method of o-ethylaniline

A technology of o-ethylaniline and aniline, which is applied in the field of preparation of o-ethylaniline, can solve problems such as control, inconvenient quality of o-ethylaniline finished products, and inconvenient o-ethylaniline laboratory detection, so as to prevent it from entering the market and facilitate The effect of control

Inactive Publication Date: 2018-12-04
无锡艾科隆环境建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention has the advantages of no pollution in the reaction process, high product yield, and reduced labor intensity of the workers. To control the quality of o-ethylaniline finished products, so we propose a preparation method of o-ethylaniline to solve the above problems

Method used

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Embodiment

[0024] Propose a kind of preparation method of o-ethylaniline in the present embodiment, comprise the following steps:

[0025] S1: Raw material preparation: Use a weighing instrument to weigh the raw material aniline and raw material ethylene according to the ratio, and put the aniline into the container for storage, and also use the weighing instrument to weigh the catalyst according to the ratio, and put the catalyst into the container for storage , waiting to be used;

[0026] S2: Heating reaction: inject the weighed raw material aniline and catalyst described in S1 into the reaction equipment, heat the inside of the reaction equipment to the temperature required for the reaction, and inject the raw material ethylene into the reaction equipment for reaction;

[0027] S3: cooling: after the reaction described in S2 is completed, inject the reacted raw materials into the cooler to cool down, and send the raw materials into the large tank after the cooling is completed;

[0...

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PUM

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Abstract

The invention discloses a preparation method of o-ethylaniline. The preparation method comprises the following steps: S1, preparing raw materials: weighing raw material aniline and raw material ethylene by using a weighing instrument according to a proportion, putting the aniline into a container for storage, weighing a catalyst by using the weighing instrument according to a proportion, putting the catalyst into a container for storage and for standby use; S2, carrying out a heating reaction: injecting the raw material aniline and catalyst weighed in the S1 into reaction equipment, heating the interior of the reaction equipment to a temperature required by the reaction, and injecting the raw material ethylene into the reaction equipment, and carrying out a reaction, and S3, carrying out cooling when the reaction in the S2 is finished. According to the invention, assay detection is carried out on the prepared o-ethylaniline, the data of the assay detection are compared with qualified data in time, and the quality of the o-ethylaniline finished product can be accurately acquired, so that the quality of the o-ethylaniline can be controlled conveniently, and poor-quality o-ethylaniline can be prevented from flowing into the market.

Description

technical field [0001] The invention relates to the technical field of o-ethylaniline production, in particular to a preparation method of o-ethylaniline. Background technique [0002] O-ethylaniline is a yellow or orange liquid, insoluble in water, slightly soluble in chloroform, soluble in ethanol, toluene, ether, etc., after N-alkylation reaction between o-ethylaniline and 2-bromopropane, it can be obtained Grassamine and o-ethylaniline are also the raw materials of imidachlor and the insecticide ethyldimeform. In the dye industry, this product can be used to make vulcanized sunfast blue. It is an important pesticide, dye and pharmaceutical intermediate. It is the key to the synthesis of new insecticides. [0003] The patent document of retrieval authorized notification number CN103333072B discloses a preparation method of o-ethylaniline, the method is to add a metal catalyst in the hydrogenation reactor, replace it with nitrogen, and wait until the air in the reactor sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C211/47C07C209/68C07C209/84
CPCC07C209/68C07C209/84C07C211/47
Inventor 周铮梁伟清
Owner 无锡艾科隆环境建设有限公司
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