Method for producing erucamid erucyl amide through circulating reactor

A loop reactor, erucamide technology, which is applied in the preparation of carboxylic acid amides, chemical instruments and methods, preparation of organic compounds, etc., can solve the problems affecting the production cost and product quality of erucamide, and uneven mixing of amidation reaction phases. , product output and yield reduction and other issues, to achieve the effect of enhancing equipment operation flexibility, improving mass transfer and reaction efficiency, and low cost

Inactive Publication Date: 2007-10-10
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the amidation reaction catalyzed by a solid catalyst is a typical gas-liquid-solid three-phase heterogeneous reaction system, the amidation reaction in a stirred tank reactor has uneven mixing between phases and increased mass transfer resistance. There are shortcomings such as "dead z

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  • Method for producing erucamid erucyl amide through circulating reactor

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Embodiment 1

[0018] A method for producing erucamide with a loop reactor, comprising the steps of: reacting with erucic acid for ammonia addition under the catalysis of activated carbon with immobilized titanium tetrachloride on the catalyst, the production device includes a loop reactor, and the loop The top of the reactor is connected to the inlet of the drier 7 through a pipeline, and the outlet of the drier is connected to the inlet of the ammonia compressor 8, and the outlet of the ammonia compressor is connected to the cavitation chamber arranged at the bottom of the loop reactor. The nozzle 5 is connected, and the loop reactor includes an outer cylinder 3 with an expanded part on its upper part, and the guide cylinder 4 is arranged at the middle and lower part of the outer cylinder, and the height-to-diameter ratio of the guide cylinder is 3:1. The nozzle is arranged at the concentric position between the bottom of the outer cylinder and the guide cylinder, and a vapor-liquid-solid t...

Embodiment 2

[0020] The total height of the loop reactor is 1m, the diameter of the upper extension of the outer cylinder is 0.4m, the diameter of the middle and lower part of the outer cylinder is 0.2m, the diameter of the diversion cylinder is 0.15m, the height of the diversion cylinder is 0.5m, and the effective volume of the reactor is 30L A loop reactor for the production of erucamide.

[0021] Mix 0.21kg of activated carbon loaded with immobilized tetraisopropoxytitanium and 15kg of erucic acid, and add it into the loop reactor through the feed port. The ammonia gas passes through the ammonia compressor and the cavitation nozzle at a linear speed of 20m / s. Enter the above-mentioned loop reactor. Slowly heat the loop reactor to maintain the temperature in the loop reactor at 180°C. At this time, the materials in the loop reactor are vigorously mixed and moved upward in the guide tube under the jetting action of the cavitation nozzle, and are distributed in the entire loop reactor. A ...

Embodiment 3

[0024] The total height of the loop reactor is 1m, the diameter of the upper extension of the outer cylinder is 0.4m, the diameter of the middle and lower part of the outer cylinder is 0.2m, the diameter of the diversion cylinder is 0.15m, the height of the diversion cylinder is 0.5m, and the effective volume of the reactor is 30L A loop reactor for the production of erucamide.

[0025] 0.13 kg of activated carbon loaded with immobilized tetra-n-propyl zirconate and 13 kg of erucic acid were mixed, and added to the loop reactor through the feed port, and the ammonia gas passed through the ammonia compressor and the cavitation nozzle at a linear speed of 20 m / s. Enter the above-mentioned loop reactor, slowly heat the loop reactor, and maintain the temperature in the loop reactor at 165°C. At this time, the materials in the loop reactor are vigorously mixed and moved upward in the guide tube under the action of the injection of the cavitation nozzle, and A loop is formed in the ...

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Abstract

This invention discloses a method for producing erucamide using a circulation reactor. The method comprises: reacting erucic acid and ammonia in the presence of catalyst. The production apparatus comprises a circulation reactor, a drier and an ammonia compressor connected to the top of the circulation reactor by pipelines, and a cavitation nozzle connected to the outlet of the ammonia compressor. The circulation reactor comprises: an outer cylinder with an expansion part at the upside, and a draft pipe with an aspect ratio of (2-5):1 set at the middle-downside of the outer cylinder. The outer cylinder comprises a gas-liquid-solid three-phase separator in the expansion part. The cavitation nozzle is set at the bottom of the outer cylinder and concentric to the draft pipe. Erucic acid and catalyst are introduced into the circulation reactor from the feeding mouth, and high-pressure ammonia is introduced with a linear speed of 5-40 m/s. The apparatus has such advantages as simple structure, recyclable ammonia, and high raw material mol. ratio during reaction, convenient operation, low energy consumption, and high erucamide yield.

Description

technical field [0001] The invention relates to a method for preparing erucamide, in particular to a method for producing erucamide with a loop reactor. Background technique [0002] As an important derivative of erucic acid, erucamide is an excellent fine chemical with wide application. The molecular structure contains unsaturated long chain and polar amine groups, which has excellent surface polarity, high melting point and good thermal stability. Erucamide is an anti-adhesive, dispersant, lubricant, release agent and antistatic agent with excellent performance in polymer materials, and can be widely used in petroleum, textile, plastic, paper, metal processing, rubber industry and surface Active agent intermediates and other fields. Since erucamide is non-toxic, it is also widely used in food packaging products. They have outstanding performance and have broad application prospects. [0003] At present, the main production process of erucamide in industry is to prepare...

Claims

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Application Information

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IPC IPC(8): C07C233/09C07C231/02
Inventor 闻建平卢文玉贾晓强呼延子龙闻建华
Owner TIANJIN UNIV
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