Manufacturing method of triethanolamine
I. Introduction
Triethanolamine (TEA) is an important chemical raw material, which is widely used in pharmaceuticals, pesticides, dyes, cosmetics, oils and fats and other fields. Therefore, it is of great practical significance to study the manufacturing method of triethanolamine. In this paper, we will introduce the method of preparing triethanolamine by ammoniation reaction using ethylene oxide as raw material.
II. Experimental raw materials and equipment
1. Raw materials: ethylene oxide, ammonia
2. Equipment: reactor, condenser, water divider, stirrer, thermometer, pressure gauge, etc.
III. Experimental steps
1. Add ethylene oxide and ammonia into the reactor according to a certain proportion and stir well.
2. Control the reaction temperature within the appropriate range and carry out the ammonia reaction.
3. Condense the water vapor generated by the reaction through condenser and separate the water through water separator.
4. At the end of the reaction, the reaction solution was post-treated to obtain the triethanolamine product.
4. Experimental results and discussion
1. Experimental results: triethanolamine was successfully prepared by ammoniation reaction with high yield.
2. Discussion of results: Factors such as reaction temperature and raw material ratios have some influence on the yield of triethanolamine. In the appropriate temperature range, increasing the reaction temperature is conducive to improving the yield; at the same time, the appropriate raw material ratio is also a key factor to ensure the high yield.
V. Experimental Precautions
1. Strictly control the reaction temperature during the experiment to avoid the effect of too high or too low temperature on the experimental results.
2. Pay attention to the sealing of the experimental equipment to prevent ammonia leakage.
3. In the post-treatment process, the introduction of impurities should be avoided to ensure product quality.
VI.CONCLUSION
The method of preparing triethanolamine by ammonia reaction using ethylene oxide as raw material is feasible and has a high yield. During the experiment, the reaction conditions should be strictly controlled to ensure the product quality. The discussion of the experimental results provides a reference for further optimizing the preparation process of triethanolamine.
