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

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The manufacturing method
of isohexane
Isohexane is an important raw material for chemical production, which is widely used in detergent, solvent, refrigerant and other fields. This paper will introduce the manufacturing method of isohexane, including raw material selection, reaction principle, process flow, equipment selection and so on.

1. raw material selection

isohexane manufacturing raw material mainly has two kinds: n-hexane and isobutane. n-Hexane is a linear alkane, molecular formula C6H14, can be obtained by petroleum fractionation. Isobutane is a branched alkane with the formula C4H10, which can also be obtained by petroleum fractionation or natural gas separation.

2. Reaction Principle

The production of isohexane is mainly achieved by the alkylation reaction of n-hexane and isobutane. Alkylation reaction is an organic chemical reaction, which refers to the reaction of adding an alkyl substituent to another compound under the action of a catalyst. In the production of isohexane, n-hexane and isobutane undergo an alkylation reaction under the action of an acidic catalyst to produce isohexane and a small amount of by-products.

3. Process
The manufacturing process of
isohexane mainly includes the following steps:

1. Pretreatment of raw materials: Pretreatment of n-hexane and isobutane respectively for desulfurization, dehydration and other pretreatment to ensure the quality of raw materials and the smooth progress of the reaction.

2. Alkylation reaction: The pretreated hexane and isobutane are mixed in a certain proportion and enter the alkylation reactor to carry out alkylation reaction under the action of acidic catalyst to generate isohexane and a small amount of by-products.

3. product separation: the reaction product is cooled, separated and other processes to obtain crude isohexane and by-products. The crude isohexane needs to be further refined to obtain a more pure isohexane product.

4. Catalyst Regeneration: The acidic catalyst in the reactor needs to be periodically regenerated to restore its activity.

4. equipment selection

In the manufacturing process of isohexane, the reactor, separator, cooler and other equipment needed should be selected according to the specific production process and requirements. At the same time, considering the safety and environmental protection in the chemical production process, it is also necessary to select equipment that meets relevant standards and regulations.

5. operation precautions

In the manufacturing process of isohexane, the following operation precautions need to be paid attention to:

1. Strictly control the quality and proportion of raw materials to ensure the smooth progress of the reaction and the quality of the product.

2. Regularly maintain and overhaul the reactor and equipment to ensure the normal operation of the equipment and the quality of the product.

3. Strengthen the safety management and environmental protection management in the production process to ensure the safety and environmental protection of the production process.

In short, the manufacturing method of isohexane involves the selection of raw materials, reaction principle, process flow, equipment selection and other aspects, which need to be adjusted and optimized according to the specific situation in the actual production process. At the same time, it is also very important to strengthen the safety management and environmental protection management in the production process.

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