Method and device for synthesizing fatty acid amide through continuous reaction

Through the combination of a two-stage pipeline reactor and a static reactor, a two-step amidation reaction is adopted to solve the problems of large equipment footprint, large catalyst dosage and high reaction temperature in the existing technology, and realize the production of fatty acid amide with high conversion rate and high purity.

CN120664984APending Publication Date: 2025-09-19SICHUAN SIPO CHEMICAL CO LTD
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Patent Information

Application Number
CN202510818434.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-18
Publication Date
2025-09-19

AI Technical Summary

Technical Problem

The existing fatty acid amide production process has the problems of large equipment footprint, large catalyst dosage, high reaction temperature, high content of nitrile generated by side reactions, and low conversion rate and purity.

Method used

A combined device of a two-stage pipeline reactor and a two-stage static reactor is used. Through a two-step process of non-catalytic amidation and catalytic amidation, the reaction kinetics principle is combined to suppress side reactions, reduce the amount of catalyst, and improve the conversion rate and purity.

Benefits of technology

The process achieves high conversion rate, high amide yield, low impurity nitrile content, and high-purity fatty acid amide products, with low catalyst usage, short reaction time, small device footprint, and simple operation.

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Abstract

The invention discloses a method and a device for synthesizing fatty acid amide through continuous reaction, and relates to the technical field of organic chemistry, and the method comprises the following steps: sequentially introducing heated fatty acid into a pipeline reactor I and a static reactor I to carry out non-catalytic amidation reaction with sprayed ammonia gas for 2-3 hours, introducing a catalyst into the static reactor I to mix with materials, then the mixture is introduced into a second pipeline reactor and a second static reactor in sequence and subjected to a catalytic amidation reaction with sprayed ammonia gas for 2-3 h, fatty acid is converted into fatty acid amide, and the content of the obtained fatty acid amide is gt; the nitrile content is 1t; 0.4% by weight; the two-stage pipeline reactor and the two-stage static reactor are arranged as synthesis devices, the device has the characteristics of small occupied space, low construction investment, continuous operation and simple maintenance operation, the fatty acid amide prepared by the device has the characteristics of high conversion rate, high amide yield, low impurity nitrile content and high purity, the catalyst dosage is low, and the production cost is low. The reaction time is short.
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