Phenol ketone products

Plastic rubber

Current Location： Home > News > Chemical Knowledge > Production and manufacturing method and process flow of crude phenol

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

Read： 1202 Time：16months ago Source：Transform the World with Simplicity

The manufacturing method
of crude phenol
1. Introduction

crude phenol is an important chemical production raw material, widely used in phenolic plastics, synthetic fibers, dyes, drugs and other fields. Therefore, it is of great significance to study the manufacturing method of crude phenol for improving the production efficiency and product quality of chemical products. This article will introduce a common crude phenol manufacturing method.

2. materials and equipment

1. Materials: coal tar, sodium hydroxide solution, sulfuric acid, water, etc.
2. Equipment: reaction kettle, distillation tower, condenser, storage tank, etc.

3. Manufacturing Methods

1. Alkaline washing: mixing coal tar with sodium hydroxide solution, heating to a certain temperature, stirring for a certain period of time, so that phenolic compounds in coal tar react with sodium hydroxide to generate sodium phenol.
2. Acidification: The mixture after alkali washing is cooled, and sulfuric acid is added to make sodium phenolate react with sulfuric acid to generate crude phenol.
3. Distillation: The acidified mixture is distilled to separate the components such as crude phenol and water.
4. Cooling crystallization: The crude phenol obtained by distillation is cooled to a certain temperature, and the crude phenol with higher purity is crystallized out.

4. precautions

1. Control the temperature and time of alkaline washing and acidification to ensure the full reaction of phenolic compounds and the purity of crude phenol.
2. The temperature and pressure should be controlled during the distillation process to avoid the decomposition and loss of crude phenol.
3. During cooling crystallization, attention should be paid to controlling the crystallization temperature and crystallization time to improve the purity and yield of crude phenol.

5. conclusion The manufacturing method of

crude phenol involves multiple chemical reactions and physical operations, and it is necessary to strictly control the process parameters and operating conditions of each link to ensure product quality and production efficiency. At the same time, it is also necessary to strengthen the monitoring and adjustment of the production process, find and solve problems in time, and ensure the stability and reliability of production.

above is a common crude phenol manufacturing method, but the specific manufacturing process may vary due to different production processes and equipment. Therefore, in actual production, it is necessary to adjust and optimize the manufacturing method according to the specific situation to improve product quality and production efficiency.

6. Outlook

With the continuous progress of science and technology and the continuous improvement of environmental protection requirements, the manufacturing method of crude phenol is also constantly improving and developing. In the future, we can further explore new production processes and technologies, improve the purity and yield of crude phenol, reduce production costs and environmental pollution, and make greater contributions to the development of chemical production.

Previous： Production and manufacturing method and process flow of quinoline

Next： Production and manufacturing method and process flow of sodium phenol salt

News Categories