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[Chemical Knowledge]：Production and manufacturing method and process of decane

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The manufacturing method
of decane
1. Introduction

Decane is a common chemical production raw material, widely used in fuels, solvents, lubricants and other fields. This article will introduce the manufacturing method of decane, including raw material selection, reaction principle, process flow, equipment selection and so on.

2. raw material selection

decane manufacturing raw materials are mainly paraffin, heavy oil and other hydrocarbon compounds. Among them, paraffin wax is the most commonly used raw material, because its carbon atom number distribution is narrow, easy to control the reaction process. Heavy oil can also be used as a raw material, but its carbon number distribution is wide and needs to be further separated and processed.

3. reaction principle

decane production is mainly achieved by cracking reaction. Cracking reaction refers to the process of cracking large molecular hydrocarbon compounds into small molecular hydrocarbon compounds under the action of high temperature and catalyst. In the production of decane, the commonly used cracking methods are thermal cracking and catalytic cracking.

1. Thermal cracking

Thermal cracking refers to the process of cracking hydrocarbon compounds into small molecules at high temperature and without catalyst. In the manufacture of decane, thermal cracking usually uses high-temperature steam as a heat source to heat raw materials such as paraffin wax to 450-550°C, and then cracked into small hydrocarbon compounds under the action of instantaneous stretching. The products of thermal cracking are mainly olefins and alkanes, which need to be further separated and processed to obtain decane.

2. Catalytic cracking

Catalytic cracking refers to the process of cracking hydrocarbon compounds into small molecules under the action of a catalyst. In the manufacture of decane, catalytic cracking usually uses acidic catalysts, such as zeolite molecular sieves, etc., to heat raw materials such as paraffin wax to 350-450°C, and then crack them into small hydrocarbon compounds under the action of the catalyst. The products of catalytic cracking are mainly light oils such as gasoline and diesel, as well as a small amount of olefins and alkanes. By adjusting the type of catalyst and reaction conditions, the distribution and properties of the product can be controlled to obtain a decane product that meets the requirements.

4. Process
The manufacturing process of
decane mainly includes the steps of raw material pretreatment, cracking reaction, product separation and purification. The specific process is as follows:

1. raw material pretreatment: paraffin wax and other raw materials for dehydration, desulfurization and other treatment, in order to ensure the smooth progress of the reaction process.
2. Cracking reaction: The pretreated feedstock is sent to a cracking reactor for thermal cracking or catalytic cracking.
3. Product separation: The product after the cracking reaction is separated to obtain decane and other by-products.
4. Refining: further refining treatment of decane, such as desulfurization, denitrification, dehydration, etc., to ensure the quality of the product.

5. equipment selection

In the manufacturing process of decane, the equipment that needs to be used includes raw material pretreatment equipment, cracking reactor, product separation equipment and refining equipment. When selecting equipment, it is necessary to comprehensively consider factors such as the production scale of the product, the nature of the raw materials, the reaction conditions and the process flow, and select the equipment that meets the requirements.

6. Conclusion The manufacturing method of

decane mainly includes the selection of raw materials, reaction principle, process flow and equipment selection. In actual production, it is necessary to select suitable manufacturing methods and equipment according to factors such as the production scale of the product and the nature of the raw materials to ensure product quality and production efficiency.

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