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[Chemical Knowledge]：Manufacturing method and process of liquid paraffin

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The manufacturing method
of liquid paraffin
1. Introduction

Liquid paraffin is an important raw material widely used in chemical production, which has excellent lubricity, oxidation resistance and thermal stability. In order to meet the growing market demand, improving the production efficiency and quality of liquid paraffin has become an urgent problem to be solved. This article will introduce the manufacturing method of liquid paraffin in detail, aiming to provide readers with useful reference and reference.

2. Manufacturing Method

1. Raw Material Preparation

The main raw material for the manufacture of liquid paraffin is petroleum wax, which contains straight chain alkanes and a small amount of branched chain alkanes. In the preparation process, it is also necessary to add a certain amount of catalyst and additives.

2. Catalytic cracking

After heating the petroleum wax to a certain temperature, a catalyst is added to carry out the cracking reaction. The role of the catalyst is to reduce the activation energy of the cracking reaction, promote the cleavage of carbon-carbon bonds in paraffin molecules, and generate smaller hydrocarbon compounds.

3. Fractionation
After the
cracking reaction, the reaction products are fractionated to separate hydrocarbons with different boiling points. By controlling the fractionation temperature and pressure, liquid paraffin having a specific boiling point range can be obtained.

4. Refining

In order to further improve the quality of liquid paraffin, it is necessary to refine the product obtained by fractionation. During the refining process, impurities generated in the cracking reaction, such as sulfur, nitrogen and other compounds, as well as darker colored colloidal substances, can be removed.

5. Blending

According to actual needs, liquid paraffin with different boiling point ranges can be blended to obtain liquid paraffin products with specific properties. In the process of blending, it is necessary to consider the viscosity, freezing point, flash point and other performance indicators of the product.

3. precautions

1. In the catalytic cracking process, it is necessary to strictly control the reaction temperature and the amount of catalyst to avoid excessive cracking or insufficient cracking.
2. During the fractionation process, it is necessary to adjust the fractionation temperature and pressure according to the requirements of the product to ensure that qualified liquid paraffin is obtained.
3. In the refining process, it is necessary to select the appropriate refining agent and operating conditions to ensure that the product quality meets the requirements.
4. In the process of reconciliation, it is necessary to select the appropriate reconciliation ratio and reconciliation process according to the performance index requirements of the product.

4. conclusion

liquid paraffin is an important raw material for chemical production, and its manufacturing method involves many links and precautions. Through reasonable raw material preparation, catalytic cracking, fractionation, refining and blending process steps, high quality liquid paraffin products can be produced. In the actual production process, it is necessary to flexibly adjust the process parameters and operating conditions according to different raw materials and product requirements to ensure product quality and output. At the same time, strengthening the safety management and environmental protection measures in the production process is also an important aspect to ensure the smooth progress of the liquid paraffin manufacturing process.

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