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[Chemical Knowledge]：The production and manufacturing method and process of mixed butane.

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The manufacturing method
of mixed butane
1. Introduction

Mixed butane is an important raw material for the production of chemical products, which is widely used in fuels, solvents, refrigerants and other fields. With the continuous development of the chemical industry, the manufacturing method of mixed butane is also constantly improved and optimized. This article will introduce a common mixed butane manufacturing method.

2. Manufacturing Method

1. Raw Material Preparation

The main raw materials for manufacturing mixed butane are naphtha and light diesel oil. Naphtha is a light petroleum product, the main component of the number of carbon atoms of 4 to 6 alkanes; light diesel oil is a heavier petroleum product, the main component of the number of carbon atoms of 8 to 16 alkanes. In order to ensure the quality of mixed butane, strict quality control of raw materials is required.

2. Pretreatment

In the manufacturing process of mixed butane, the raw materials need to be pretreated to ensure the smooth progress of subsequent reactions. Pretreatment mainly includes dehydration, desulfurization, denitrification and other steps to remove impurities and moisture in the raw material.

3. Cracking reaction

cracking reaction is one of the key steps to make mixed butane. Under the action of high temperature and catalyst, the heavy hydrocarbons in the feedstock are cracked to produce light hydrocarbons. The cracking reaction is generally carried out using a fluidized bed reactor or a fixed bed reactor.

4. Fractionation
After the
cracking reaction is completed, the reaction product needs to be fractionated to separate the mixed butanes. Fractionation is the process of separating a mixture into different components by taking advantage of the differences in boiling points between different hydrocarbons. By fractional distillation, mixed butanes with higher purity can be obtained.

5. Refining

In order to ensure the quality of mixed butane, it is necessary to refine the product obtained by fractionation. The refining process includes desulfurization, decolorization, deodorization and other steps to remove impurities and odors from the mixture.
Precautions for
3.

1. In the manufacturing process, it is necessary to strictly control the quality and proportion of raw materials to ensure the quality and production efficiency of mixed butane.

2. The cracking reaction is a reaction under high temperature and high pressure conditions. It is necessary to select a suitable reactor and catalyst, and strictly control the reaction conditions to ensure the safety and efficiency of the reaction.

3. It is necessary to control the operating conditions of the fractionation tower in order to ensure the purity and yield of the mixed butane.

4. conclusion

mixed butane is an important raw material for chemical production, and its manufacturing method involves many steps and precautions. Through strict raw material control, pretreatment, cracking reaction, fractionation and refining steps, mixed butane with high purity and stable quality can be produced, which provides strong support for the development of the chemical industry.

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