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[Chemical Knowledge]：Production and manufacturing method and process flow of tert-butyl alcohol

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The manufacturing method
of tert-butyl alcohol
tert-butyl alcohol (Tert-Butanol, referred to as TBA) is an important chemical raw material, widely used in solvents, plasticizers, pharmaceutical intermediates and other fields. This paper will introduce the manufacturing method of tert-butyl alcohol in detail, including raw material selection, reaction principle, process flow, equipment selection and so on.

1. raw material selection

tert-butanol manufacturing raw material mainly has two kinds: isobutylene and formaldehyde. Among them, isobutylene can be produced by petroleum cracking or natural gas, and formaldehyde can be produced by methanol oxidation and other methods. When selecting raw materials, factors such as purity, cost, and source stability should be considered.

2. reaction principle

tert-butyl alcohol is mainly produced by the addition reaction of isobutylene and formaldehyde under the action of acidic catalyst to generate tert-butyl aldehyde, and then the aldehyde group is reduced to hydroxyl group by hydrogenation reaction to obtain tert-butyl alcohol. The specific chemical reaction equation is as follows:

isobutylene formaldehyde → tert-butyl aldehyde
tert-butyl aldehyde hydrogen → tert-butyl alcohol

3. Process
The manufacturing process of
tert-butyl alcohol mainly includes the following steps:

1. Raw material pretreatment: isobutylene and formaldehyde are purified and dried separately to ensure the purity and quality of raw materials.
2. Addition reaction: under the action of acidic catalyst, isobutylene and formaldehyde are added into the reactor according to proportion, and the addition reaction is carried out to generate tert-butyl aldehyde.
3. Separation and purification: The tert-butyl aldehyde generated by the reaction is separated from the unreacted raw materials by distillation, extraction and other methods, and purified.
4. Hydrogenation: The purified tert-butyl aldehyde is hydrogenated with hydrogen in the presence of a catalyst to generate tert-butyl alcohol.
5. Product separation and purification: through distillation and other methods, the generation of tert-butyl alcohol and unreacted hydrogen, catalyst and other separation, to obtain a higher purity of tert-butyl alcohol products.

4. equipment selection

In the manufacturing process of tert-butyl alcohol, the reactor, distillation tower, extraction tank and other equipment needed should be selected according to the requirements of the production process. At the same time, considering the safety and environmental protection of chemical production, it is also necessary to choose high-quality equipment that meets relevant standards.
Precautions for production of
5.

1. Strictly control the quality and purity of raw materials to avoid adverse effects on the production process and product quality.
2. In the process of addition reaction and hydrogenation reaction, it is necessary to select suitable catalysts and reaction conditions to improve reaction efficiency and product purity.
3. In the production process, it is necessary to strengthen equipment maintenance and operation management to ensure the normal operation of equipment and stable product quality.
4. Timely treatment of waste gas and wastewater generated in the production process to reduce the impact on the environment.

In short, the manufacturing method of tert-butyl alcohol involves many links and factors, and it is necessary to comprehensively consider the selection of raw materials, reaction principle, process flow, equipment selection and other aspects. At the same time, strengthen production management and environmental protection to ensure the smooth progress of production and the stable improvement of product quality.

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