Venturi jet mixing reactor, oleamide continuous synthesis apparatus and application method thereof

Abstract

The invention provides a Venturi jet mixing reactor. A turbulent region is arranged between a gas-liquid mixing region and a gas-liquid diffusion region, so that the gas-liquid mixing degree can be improved, the absorbed ammonia gas can be formed into precisely-dispersed gaseous phase, the high-efficiency instantaneous mass transfer can be realized, and the reaction can be facilitated. The invention provides an oleamide continuous synthesis apparatus. The closed circulation of the ammonia gas can be formed by using the suction pressure difference at a suction medium inlet of the Venturi jet mixing reactor, so that the surplus ammonia gas in a synthesis kettle can be circularly reused, the waste and pollution caused by the emission of the ammonia gas can be avoided, the utilization rate ofthe ammonia gas can be improved, the cost can be reduced, and the safety potential hazard can be eliminated. The invention also provides a method for continuously synthesizing the oleamide by using the oleamide continuous synthesis apparatus. By adopting the method, the continuous efficient automatic intelligent synthesis with high conversion rate and high stability can be realized, and the quality, consistency, uniformity and stability of the oleamide can be improved.

Description

technical field [0001] The invention relates to the technical field of oleic acid amide production equipment, in particular to a Venturi jet mixing reactor, a continuous oleic acid amide synthesis device and a use method thereof. Background technique [0002] Oleic acid amide [CASNO:301-02-01] is a green fine chemical with excellent performance and wide application, and is a very important additive in the field of polymer materials. With the continuous expansion of application fields and the increase in the amount of additives used, new and higher requirements are put forward for the quality of products such as oleic acid amide, and high-end products with high purity, stability and consistency are urgently needed. [0003] Oleic acid amide is generally obtained by the reaction of oleic acid and ammonia gas. The amidation reaction of oleic acid and ammonia belongs to the gas-liquid phase reaction. The gaseous ammonia can only proceed smoothly when it is dissolved in oleic aci...

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Problems solved by technology

Even for small reactors, only about 50% of the ammonia directly participates in the reaction through intermittent ammonia control, and about 50% of the ammonia must be discharged with the tail gas. The consumption of ammonia is high, which is easy to pollute the environment, and the subsequent treatment costs high cost

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