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[Chemical Knowledge]：Manufacturing method and process of mixed C4

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The manufacturing method
of mixed C4
1. Introduction

mixed C4 is an important raw material for the production of chemical products, which is widely used in rubber, plastics, coatings, medicine and other fields. This paper will introduce the manufacturing method of mixed C4, including raw material selection, reaction principle, process flow, equipment selection and so on.

2. raw material selection

mixed C4 manufacturing raw materials are mainly C4 components in petroleum gas, including n-butane, isobutane, 1-butene, 2-butene, etc. These raw materials can be obtained by petroleum refining or natural gas separation.

3. reaction principle

mixed C4 manufacturing process is mainly through the olefin addition reaction and alkane isomerization reaction to achieve. The specific reaction principle is as follows:

1. Olefin addition reaction: 1-butene and 2-butene can undergo an addition reaction to generate butane under the action of an acidic catalyst.
2. alkane isomerization reaction: n-butane under the action of acidic catalyst, can produce isobutane isomerization reaction.

4. process

mixed C4 manufacturing process mainly includes the following steps:

1. raw material pretreatment: raw material desulfurization, dehydration and other pretreatment, in order to ensure the smooth progress of the reaction.
2. Reaction: The pretreated feedstock enters the reactor for addition and isomerization reactions under the action of an acidic catalyst.
3. Separation: The reaction product is subjected to processes such as cooling and separation to obtain a mixed C4 product.
4. Refining: Refining mixed C4 products to meet the requirements of product quality in different fields.

5. equipment selection

In the manufacturing process of mixed C4, the reactor, separator, cooler and other equipment needed should be selected according to the specific process flow and product requirements. At the same time, factors such as corrosion resistance, reliability, and maintenance convenience of the equipment should be considered.

6. operation precautions

In the manufacturing process of mixed C4, the following operation precautions should be paid attention to:

1. Strictly control the quality and proportion of raw materials to ensure the smooth progress of the reaction and the stability of product quality.
2. Maintain and maintain the equipment regularly to ensure the normal operation and service life of the equipment.
3. Strengthen the safety management in the production process, comply with relevant regulations and standards, and ensure the safety and reliability of the production process.

7. environmental protection and sustainable development

should pay attention to environmental protection and sustainable development in the manufacturing process of mixed C4, and take effective measures to reduce waste emissions and energy consumption in the production process. For example, advanced production technology and equipment can be used to improve the utilization rate of raw materials and the yield of products; at the same time, the recovery and utilization of waste can be strengthened to realize the recycling of resources.

8. conclusion

mixed C4 as an important raw material for chemical production has a wide application prospect. Through the optimization of reasonable raw material selection, reaction principle, process flow and equipment selection, the manufacturing efficiency and product quality of mixed C4 can be improved to meet the needs of different fields. At the same time, strengthening the management of operation precautions and environmental protection and sustainable development can ensure the safety and reliability of the production process and the improvement of economic benefits.

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