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

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Manufacturing method

of isopropanolamine Isopropanolamine is an important organic chemical raw material, which is widely used in cleaning agents, antifreeze, printing and dyeing auxiliaries, antistatic agents, scale inhibitors, corrosion inhibitors and other fields. This article will introduce the manufacturing method of isopropanolamine.

1. manufacturing principle

isopropanolamine is prepared by the addition reaction of ammonia and propylene alcohol under the action of a catalyst. The reaction equation is as follows:

NH3 CH3CHOHCH3 → CH3CH2NHCH2CH3 H2O

2. Manufacturing process
The manufacturing process of
isopropanolamine mainly includes the following steps:

1. Catalyst preparation

Selecting the appropriate catalyst is the key to the manufacture of isopropanolamine. Commonly used catalysts are acidic catalysts and basic catalysts. Among them, acid catalysts are commonly used sulfuric acid, phosphoric acid, etc., alkaline catalysts are commonly used sodium hydroxide, potassium hydroxide, etc. The preparation of the catalyst needs to be adjusted according to the specific reaction conditions and raw materials.

2. raw material ratio

the ratio of ammonia and propylene alcohol in accordance with a certain molar ratio, general ammonia slightly excess, in order to ensure the reaction.

3. Feeding reaction

The ratio of good raw materials into the reactor, the reaction at a certain temperature and pressure. During the reaction, the reaction temperature and pressure need to be controlled to ensure the smooth progress of the reaction.

4. Separation and purification

After the reaction is completed, the reaction solution needs to be separated and purified to obtain a higher purity isopropanolamine product. Commonly used separation methods are distillation, extraction, crystallization, etc.

3. precautions

1. The choice of catalyst needs to be adjusted according to the specific reaction conditions and raw materials to ensure the catalytic effect.

2. The ratio of raw materials needs to be strictly controlled to ensure the progress of the reaction and the quality of the product.

3. The reaction temperature and pressure need to be controlled within an appropriate range to ensure the smooth progress of the reaction and the quality of the product.

4. In the process of separation and purification, attention should be paid to the purity and yield of the product to improve economic efficiency.

4. environmental protection and safety

the need to pay attention to environmental protection and safety issues in the manufacturing process of isopropanolamine. The waste water and waste gas produced in the reaction process need to be treated to meet the environmental requirements. At the same time, the production process needs to strictly abide by the safety operation procedures to ensure the safety of employees and equipment.

In short, the manufacturing method of isopropanolamine needs to be adjusted according to the specific reaction conditions and raw materials to ensure the quality of the product and the economic benefits of production. At the same time, environmental protection and safety issues also need to be fully paid attention to ensure the sustainability and safety of the production process.

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