Intelligent reaction system and method for preparing N-methyl sodium taurate

A technology of sodium methyl taurine and reaction system, which is applied in the field of intelligent reaction systems for preparing sodium N-methyl taurine, can solve industrial cost, large equipment cost loss, high labor intensity of operators, and manual addition of catalysts and other problems, to achieve the effect of high labor intensity, reducing labor intensity of workers, and improving the level of automated production and management

Inactive Publication Date: 2020-12-08
NANJING YANCHANG REACTION TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main method for industrially synthesizing sodium N-methyl taurate is the reductive amination method. When using this method for industrial production, the required temperature is 230°C-280°C, the required pressure is 10MPa-20MPa, and the industrial cost , equipment cost and loss are huge, with many disadvantages such as high pressure, high temperature, and low conversion rate; in addition, due to the low degree of automation of the process and the heavy supervision workload, a large number of operators are required to complete the entire process on site during the treatment process. Complicated, the labor intensity of the operator is high, and the manual addition of catalyst is involved, which not only brings inconvenience to the operator, but also is extremely dangerous

Method used

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  • Intelligent reaction system and method for preparing N-methyl sodium taurate
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  • Intelligent reaction system and method for preparing N-methyl sodium taurate

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Embodiment 1

[0066] refer to figure 1 Shown, be the reaction system of the preparation N-methyl taurate sodium of the present invention, it has included amination reaction kettle 1, the amination reaction product that comes out from amination reaction kettle enters the first after the reaction of tubular reactor 2 A gas-liquid separation tank 3, specifically, the side wall of the amination reaction kettle 1 is provided with a raw material inlet 11, and the raw material inlet 11 is provided with a micro-interface generator 101 for dispersing and crushing materials into microbubbles, and the micro-interface generator 101 A methylamine inlet 1010 is provided on the side wall, and the methylamine inlet 1010 is connected to the vaporizer 100 for vaporizing methylamine and then entering the micro-interface generator 101 .

[0067] It can be understood that the number and type of micro-interface generators 101 are not specifically limited in this embodiment, and they can be selected from one of p...

Embodiment 2

[0083] This embodiment is different from Embodiment 1 only in the number of micro-interface generators, the temperature and pressure settings of the system, the number of micro-interface generators in this embodiment is 2 and set in parallel from top to bottom, the system temperature Set to 220°C and pressure to 7MPa. The output of sodium N-methyl taurate was detected, and the conversion rate of methylamine was calculated to be 98%.

Embodiment 3

[0085] This embodiment is different from Embodiment 1 only in the number of micro-interface generators, the temperature and pressure settings of the system. The number of micro-interface generators in this embodiment is 2 and the horizontal direction is connected in series. Set to 250°C and pressure to 10MPa. The output of sodium N-methyl taurate was detected, and the conversion rate of methylamine was calculated to be 97%.

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Abstract

The invention provides an intelligent reaction system and method for preparing Nmethyl sodium taurate, and the system comprises an amination reaction kettle, an amination reaction product from the amination reaction kettle enters a first gas-liquid separation tank after reaction through a tubular reactor, and the side wall of the amination reaction kettle is provided with a raw material inlet, Theraw material inlet is provided with a microinterface generator used for dispersing crushed materials into microbubbles, the side wall of the microinterface generator is provided with a methylamine inlet, and the methylamine inlet is connected with a vaporizer so as to vaporize methylamine. According to the intelligent reaction system for preparing the N-methyl sodium taurate, the microinterface reactor is arranged at the raw material inlet of the amination reaction kettle, so that the problem of low reaction efficiency of the system due to the fact that methylamine and sodium isethionate cannot be fully mixed in the reaction kettle in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of preparing sodium N-methyl taurate, in particular to an intelligent reaction system and method for preparing sodium N-methyl taurate. Background technique [0002] Sodium N-methyl taurate can be used as daily chemicals and pharmaceutical intermediates. In the field of daily chemicals, it can be used to synthesize sodium cocoyl-N-methyl taurate, sodium polyacryloyl dimethyl taurate, polydimethylsiloxane PEG-7 acetyl methyl taurine Sodium acrylate, hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer and other high value-added products, these products are generally used as mild surfactants due to their mild properties. With the increasing demand for personal care, the market of mild surfactants shows a rapid growth trend, and the importance of N-methyl taurine sodium series surfactants is also becoming more and more prominent. [0003] Among the mild surfactants of sodium methyl taurate series, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C303/32C07C309/14B01F3/04B01J19/00
CPCC07C303/32B01J19/0013B01J19/0006B01F23/20C07C309/14
Inventor 张志炳孟为民周政王宝荣杨高东罗华勋张锋李磊杨国强田洪舟曹宇
Owner NANJING YANCHANG REACTION TECH RES INST CO LTD
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