Application and process of oxygen air compressor in the paper industry

In the paper industry, the application of oxygen air compressor mainly focuses on the process of pulp bleaching and delignin. The use of oxygen for these treatment steps can reduce the use of harmful chemicals, improve production efficiency, and reduce the impact on the environment. The following are the specific applications and processes:

1. Oxygen Delignification

Process:

• In the papermaking process, wood is treated to remove lignin, which is an important step in pulp production. Traditional methods use chlorine compounds, but this will produce harmful chloride waste.

• The use of oxygen for degunin treatment can significantly reduce the use of chlorine. Through the high-purity oxygen provided by the oxygen air compressor, lignin is decomposed to form a low molecular weight compound soluble in water, which is easier to remove.

• This method not only reduces environmental pollution, but also improves the quality of pulp.

Advantages:

• It reduces the use of chloride and reduces the emission of hazardous waste.

• Improve the whiteness and strength of the pulp.

• Save energy and chemical costs.

2. Oxygen Bleaching

Process:

• In the pulp bleaching stage, oxygen, as part of the bleach, is used to reduce the residual lignin in the pulp. This is closely related to the oxygen de-lignin process, but it is mainly used to further improve the whiteness of pulp.

• The oxygen provided by the oxygen air compressor is introduced into the pulp reactor, which promotes the oxidation reaction and further degrades lignin, making the pulp whiter and purer.

Advantages:

• Reduce dependence on traditional bleaching chemicals (such as chlorine or chlorine dioxide).

• Improve the bleaching efficiency and reduce the steps of the bleaching process.

• Improve the physical properties of pulp, such as strength and brightness.

3. Wastewater treatment

Process:

• The wastewater produced by the paper mill contains a large amount of organic matter, which needs to be effectively treated to meet environmental protection standards.

• The oxygen produced by the oxygen production air compressor is used in the biodegradation process in wastewater treatment. By injecting oxygen into the wastewater, it promotes microbial decomposition of organic matter and reduces chemical oxygen demand (COD) and biological oxygen demand (BOD).

Advantages:

• Improve the efficiency of wastewater treatment and reduce the discharge of pollutants.

• Reduce treatment costs and meet environmental protection requirements.

Summary:

In the paper industry, oxygen air compressors support key processes such as oxygen delignin, oxygen bleaching and wastewater treatment by providing efficient and pure oxygen. These applications not only improve the quality of pulp and reduce production costs, but also reduce the impact on the environment and meet the sustainable development requirements of the modern paper industry.