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

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The manufacturing method
of phenol ketone
1. Introduction

phenol ketone is a kind of important organic chemical raw materials, widely used in plastics, fiber, rubber, paint, medicine, pesticide and other fields. With the continuous development of science and technology, the manufacturing method of phenol ketone is also constantly improved and optimized. This article will introduce several common phenolic ketone manufacturing methods.

2. Phenol method

Phenol method is a common phenol ketone manufacturing method, mainly using benzene as raw material, through sulfonation, alkali fusion, acidification and other steps to produce phenol ketone. The specific steps are as follows:

1. Sulfonation: benzene is mixed with concentrated sulfuric acid and heated to a certain temperature, so that benzene is sulfonated to generate benzene sulfonic acid.

2. Alkali fusion: mix benzenesulfonic acid with sodium hydroxide and heat it to a certain temperature to make sodium benzenesulfonate react with sodium hydroxide to generate sodium phenolate.

3. Acidification: The sodium phenolate is acidified with sulfuric acid to produce phenol and sodium sulfate.

phenol method has the advantages of easy access to raw materials and simple operation, but a large amount of waste acid and wastewater will be produced in the production process, which will cause certain pollution to the environment.

3. acetone method

acetone method is a relatively new type of phenol ketone manufacturing method, mainly using acetone as raw material, through oxidation, condensation and other steps to produce phenol ketone. The specific steps are as follows:

1. Oxidation: acetone is mixed with air or oxygen and heated to a certain temperature, so that acetone is oxidized to generate pyruvic acid.

2. Condensation: Mixing pyruvic acid with sodium hydroxide and heating to a certain temperature to react pyruvic acid with sodium hydroxide to generate sodium phenolone.

3. Acidification: Sodium phenolone is acidified with sulfuric acid to produce phenolone and sodium sulfate.

acetone method has the advantages of easy availability of raw materials, high yield and good environmental protection, and has gradually become the mainstream method of phenol ketone manufacturing.

4. other methods

In addition to the phenol method and acetone method, there are some other phenolic ketone manufacturing methods, such as cresol method, acetaldehyde method, etc. These methods have their own advantages and disadvantages, and are suitable for different production conditions and needs.
Precautions in the production process of
5.

In the manufacturing process of phenol ketone, the following points need to be paid attention to:

1. Control the reaction temperature and time to avoid overreaction or underreaction.

2. Control the proportion of raw materials and the addition rate to ensure the smooth progress of the reaction.

3. Regular maintenance and maintenance of production equipment to ensure the normal operation and service life of the equipment.

4. Strengthen safety management and environmental protection management in the production process to avoid safety accidents and environmental pollution.

6. conclusion

phenol ketone is a kind of important organic chemical raw materials, manufacturing methods are various. When choosing a manufacturing method, it is necessary to consider factors such as production conditions, raw material sources, and environmental protection requirements. At the same time, it is necessary to strengthen safety management and environmental protection management in the production process to ensure the smooth progress and development of production.

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