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[Chemical Knowledge]：Production and manufacturing method and process flow of triethanolamine

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The manufacturing method
of triethanolamine
1. Introduction

Triethanolamine (TEA) is an important chemical raw material, widely used in medicine, pesticides, dyes, cosmetics, oils and other fields. Therefore, it is of great practical significance to study the manufacturing method of triethanolamine. This paper will introduce the method of preparing triethanolamine by amination reaction with ethylene oxide as raw material.

2. experimental raw materials and equipment

1. raw materials: ethylene oxide, ammonia
2. equipment: reactor, condenser, water separator, stirrer, thermometer, pressure gauge and other

3. experimental steps

1. add ethylene oxide and ammonia water into the reactor according to a certain proportion and stir evenly.
2. Control the reaction temperature in the appropriate range, the hydrogenation reaction.
3. The water vapor generated by the reaction is condensed by a condenser, and water is separated by a water separator.
4. After completion of the reaction, the reaction solution is post-treated to obtain a triethanolamine product.

4. Experimental results and discussion

1. Experimental results: Triethanolamine was successfully prepared by ammoniation reaction with high yield.
2. Results Discussion: The reaction temperature, raw material ratio and other factors have a certain effect on the yield of triethanolamine. In the appropriate temperature range, increasing the reaction temperature is conducive to increasing the yield; at the same time, the appropriate ratio of raw materials is also a key factor to ensure high yield.

5. Experiment Precautions

1. In the process of the experiment, the reaction temperature should be strictly controlled to avoid the influence of too high or too low temperature on the experimental results.
2. Pay attention to the tightness of the experimental equipment to prevent ammonia leakage.
3. In the post-treatment process, to avoid the introduction of impurities, to ensure product quality.

6. conclusion

using ethylene oxide as raw material, the method of preparing triethanolamine by amination reaction is feasible, and the yield is high. During the experiment, the reaction conditions should be strictly controlled to ensure product quality. The discussion of the experimental results provides a reference for further optimizing the preparation process of triethanolamine.

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