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[Chemical Knowledge]：Production method and process flow of fine dicyclopentadiene

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The manufacturing method
of fine dicyclopentadiene
1. Introduction

fine dicyclopentadiene (DCPD) is an important chemical production raw material, widely used in synthetic rubber, plastics, spices, medicine and other fields. With the increasing demand for DCPD in the market, it is of great significance to study its manufacturing methods for improving production efficiency, reducing costs and improving product quality. This article will detail the manufacturing method of fine dicyclopentadiene.

2. manufacturing methods

1. cracking method

cracking method is the main method of producing fine dicyclopentadiene, its raw material is mainly cyclopentadiene (CPD). During the production process, CPD undergoes a thermal cracking reaction to generate DCPD. The cracking method can be divided into thermal cracking and catalytic cracking.

(1) thermal cracking method

thermal cracking method is under high temperature conditions, so that CPD thermal cracking reaction, the formation of DCPD. The process is simple, but the yield is low, and high temperature conditions are required.

(2) catalytic lysis method

catalytic lysis method is under the action of the catalyst, the CPD cracking reaction, the formation of DCPD. Compared with the thermal cracking method, the catalytic cracking method has a lower reaction temperature and a higher DCPD yield. Commonly used catalysts include acidic catalysts and metal catalysts.

2. Distillation

rectification is a method of separating DCPD from a CPD mixture by distillation. This method is suitable for the situation of high DCPD content in CPD mixture, but the energy consumption of the separation process is large.

3. process

1. raw material preparation

cyclopentadiene (CPD) as raw material, after pretreatment, removal of impurities, to ensure the quality of raw materials.

2. cracking reaction

sends the pretreated CPD into the cracking reactor, and under the action of high temperature or catalyst, the cracking reaction takes place to generate DCPD.

3. product separation and purification

separation and purification of the mixture after the cracking reaction to obtain high purity DCPD products. Separation and purification methods can be selected according to the actual production situation, such as distillation, extraction, crystallization and so on.

4. Precautions

1. Strictly control the reaction conditions to ensure the smooth progress of the cracking reaction and improve the yield of DCPD.
2. In the process of separation and purification, appropriate operating conditions and equipment should be selected to reduce energy consumption and improve product quality.
3. Strengthen the safety management in the production process to ensure the normal operation of equipment and prevent accidents.

5. Conclusion The manufacturing methods of

refined dicyclopentadiene mainly include cracking method and rectification method. In the actual production process, the appropriate manufacturing method should be selected according to factors such as the source of raw materials, product quality requirements and production costs. At the same time, strengthen the production process research and equipment transformation, improve the yield of DCPD, reduce costs, in order to meet the growing market demand.

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