The role and process of oxygen air compressor in the chemical industry

Oxygen air compressors play a key role in the chemical industry, mainly used to provide pure oxygen to support various chemical reactions and production processes. Oxygen is an important raw material and combustion aid in many chemical processes, which can significantly improve production efficiency and product quality. The following is the role and process of oxygen air compressor in the chemical industry:

Effect

1. Oxidation reaction:

Oxygen is used as a reactant for a variety of oxidation reactions, including the production of nitric acid, the oxidation of ethylene to ethylene oxide, the oxidation of propylene to acrylonaldehyde, etc.Improve the reaction rate and selectivity, reduce the generation of by-products, and reduce energy consumption.

2. Flame aid:

In the combustion process, pure oxygen replaces air as a combustion aid, which can significantly improve the combustion temperature and efficiency.It is suitable for high-temperature combustion processes, such as petrochemical cracking furnaces, glass furnaces, etc., to increase production capacity and reduce pollutant emissions.

3. Synthetic ammonia:

In the process of synthesizing ammonia, oxygen is used for the production of hydrogen, and high-purity hydrogen is obtained through natural gas reforming.Providing a stable oxygen supply helps to improve the operating efficiency of synthetic ammonia devices.

4. Production of syngas:

Through partial oxidation reaction, heavy oil, natural gas or coal gas are turned into syngas (CO and H2) for the production of fertilizers, methanol, etc.The use of oxygen improves the yield and purity of syngas.

5. Exhaust gas treatment:

Oxygen is used in waste gas treatment devices to improve the removal efficiency of harmful gases such as sulfur dioxide (SO2) and nitrogen oxides (NOx).Promote the implementation of catalytic oxidation and other gas purification processes.

Process

1. Oxygen production:

Oxygen production air compressor is used to extract oxygen from the air. The common methods include low-temperature separation method, pressure change adsorption method (PSA) and membrane separation method.Produce oxygen of different purity according to demand to adapt to various chemical processes.

2. Compression and transportation:

The oxygen is compressed to the required pressure level through the air compressor to meet the requirements of the chemical device.

The compressed oxygen is transported through pipelines to various use points, such as reactors, combustion furnaces, etc.

3. Application of oxidation reaction:

In the reactor, oxygen is mixed with other reactants for oxidation. For example, in the reaction of ethylene oxidation to ethylene oxide, oxygen and ethylene react in the presence of a catalyst.Control the reaction conditions (such as temperature, pressure, flow rate) to optimize the efficiency and selectivity of the oxidation reaction.

4. Flame-aided applications:

In the combustion process, pure oxygen replaces air and enters the combustion chamber, improving the flame temperature and fuel utilization.It is used in high-energy processes, such as cracking, incineration, etc., to reduce the emission of nitrogen oxides.

5. Gas treatment and purification:

Oxygen is used in the waste gas treatment process, which converts harmful gases into harmless substances through oxidation.Cooperate with other chemical reagents or catalysts to improve the removal efficiency of the purification device.

Specific application examples

1、Ethylene is oxidized to ethylene oxide:

Process: Ethylene and oxygen oxidize under the action of silver catalyst to form ethylene oxide.

Advantages: The use of pure oxygen can improve the yield and reaction rate of ethylene oxide.

2、Nitric acid production:

Process: Nitric acid is produced through the oxidation of ammonia, and oxygen is used as an oxidant to improve the reaction efficiency.

Advantages: Improve the purity and production speed of nitric acid, and reduce by-products.

3、Methanol synthesis:

Process: Natural gas is partially oxidized to produce syngas, and then synthesized into methanol through a catalytic reaction.

Advantages: The use of oxygen improves the quality of syngas, thus increasing the production of methanol.

Conclusion

The application of oxygen air compressor in the chemical industry has significantly improved production efficiency, product quality and environmental protection performance. By providing stable and high-purity oxygen, chemical enterprises can optimize the production process, reduce costs, and meet the requirements of increasingly strict environmental protection laws and regulations.