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[Chemical Knowledge]：Production method and process of acetone

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of the manufacturing method
of acetone Acetone is an important organic chemical raw material, which is widely used in medicine, pesticide, plastic, fiber, coating and other fields. This article will introduce the manufacturing method of acetone, including raw material selection, reaction principle, process flow, equipment selection and so on.

1. raw material selection

acetone manufacturing raw materials are mainly benzene, propylene and acetic acid. Among them, benzene is a common chemical raw material, which is cheaper but more toxic; propylene is a light olefin with high reactivity but more expensive; acetic acid is a carboxylic acid, which is easy to transport and store, but the production cost is higher. Taking into account factors such as raw material price, source, safety and environmental protection, choosing the right raw material is the key to acetone manufacturing.

2. reaction principle

acetone mainly adopts propylene carbonylation method. The reaction principle is as follows:

CH3CH = CH2 CO H2 → CH3COCH3

The reaction is to introduce propylene, carbon monoxide and hydrogen into the reactor according to a certain proportion under the action of catalyst, and carry out carbonylation reaction at appropriate temperature and pressure to produce acetone.

3. Process
The manufacturing process of
acetone mainly includes the steps of raw material pretreatment, carbonylation reaction, separation and purification. The specific process is as follows:

1. raw material pretreatment: propylene, carbon monoxide and hydrogen are mixed according to a certain proportion and preheated.
2. Carbonylation reaction: The preheated raw material gas is introduced into a reactor containing a catalyst, and the carbonylation reaction is carried out at an appropriate temperature and pressure to produce acetone gas.
3. Cooling separation: The acetone gas generated by the reaction is cooled to a certain temperature, condensed into a liquid, and separated from the unreacted gas.
4. Refining: Refining the separated acetone liquid to remove impurities and obtain acetone products with high purity.

4. equipment selection

acetone manufacturing need to use the reactor, separator, cooler, refining tower and other equipment. When selecting equipment, it is necessary to consider the reliability, efficiency, safety and other factors of the equipment to ensure the smooth progress of production. At the same time, it is also necessary to select the appropriate equipment type and specification according to the requirements of the production process.

5. safety production and environmental protection requirements

acetone manufacturing process needs to pay attention to safety production and environmental protection requirements. In the production process, it is necessary to strictly abide by the relevant safety operation procedures to ensure the safety of employees and equipment. At the same time, it is also necessary to treat and treat the waste gas, waste water and other pollutants generated in the production process to meet environmental protection requirements.

6. Economic Benefit Analysis

In the manufacture of acetone, it is necessary to analyze the economic benefits. Factors such as raw material costs, production costs, and market demand need to be considered to determine the economic feasibility of production. At the same time, it is also necessary to improve production efficiency and quality, reduce costs, and improve the economic benefits of enterprises through technological innovation and process improvement.

In short, the manufacture of acetone requires comprehensive consideration of raw material selection, reaction principle, process flow, equipment selection and other aspects to ensure the smooth progress of production and product quality. At the same time, it is also necessary to pay attention to safety production and environmental protection requirements to improve the economic and social benefits of enterprises.

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