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[Chemical Knowledge]：Manufacturing method and process of triisopropanolamine

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Triisopropanolamine (TIPA) manufacturing method

1. Introduction

Triisopropanolamine (TIPA) is an important chemical raw material, widely used in lubricants, cleaning agents, preservatives, antioxidants and other fields. Due to its unique physical and chemical properties, TIPA has important application value in chemical production. This article will detail the manufacturing method of triisopropanolamine.

2. raw materials and equipment

1. Raw materials: isopropanolamine, acetone, sodium hydroxide
2. Equipment: reaction kettle, condenser, stirrer, storage tank, centrifuge and other

3. manufacturing steps

1. Isopropanolamine and acetone are added into the reaction kettle according to a certain proportion, and the stirrer is turned on to fully mix the raw materials.
2. in the process of stirring, slowly add sodium hydroxide solution, adjust the pH value to the specified range, keep the reaction temperature in a certain range.
3. After stirring for a certain period of time, stop stirring and stand for stratification.
4. Separate the resulting solid precipitate from the liquid using a centrifuge and collect the liquid portion.
5. The collected liquid is distilled to separate unreacted raw materials and impurities to obtain crude triisopropanolamine.
6. The crude triisopropanolamine is refined, including dehydration, impurity removal and other steps to obtain the final product.

4. Precautions

1. Strictly control the proportion of each raw material and the reaction temperature to ensure that the reaction generates triisopropanolamine.
2. During the reaction, it is necessary to pay close attention to the change of pH value and adjust the amount of sodium hydroxide in time.
3. When centrifuging, ensure that the solid precipitate is completely separated to avoid affecting the purity of the product.
4. During the distillation process, it is necessary to control the distillation speed and temperature to avoid product decomposition or loss.
5. In the refining process, effective dehydration and impurity removal methods should be taken to improve product purity.

5. product quality and yield

1. product quality: in accordance with the relevant standards for the preparation of triisopropanolamine quality testing to ensure that its purity, moisture, color and other indicators meet the requirements.
2. Yield: Calculate the theoretical yield of the product based on the input raw materials and compare it with the actual yield to evaluate the yield of the manufacturing process. The yield is affected by many factors such as raw material quality and operating conditions.

6. environmental protection and safety

1. Wastewater treatment: The wastewater generated during the production process should be treated to meet environmental protection standards and discharged to avoid environmental pollution.
2. Waste gas treatment: collect and treat the waste gas generated in the production process to reduce air pollution.
3. Waste residue treatment: Solid waste residue shall be safely treated or recycled in accordance with relevant regulations.
4. Safety protection: In the production process, the safety operation procedures should be strictly observed to ensure the safety of employees and equipment.

7. Conclusion The manufacturing method of

triisopropanolamine involves multiple steps and precautions. High-quality products can be obtained by strictly controlling the raw material ratio, reaction conditions, separation and purification. At the same time, the production process should pay attention to environmental protection and safety, reduce the impact on the environment and personnel. By continuously optimizing the manufacturing method, the yield and purity of triisopropanolamine can be improved, and a stable supply of raw materials can be provided for chemical production.

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