exhaust air with Oxi.X TR

Remove pollutants from exhaust air with Oxi.X TR

What is Thermal Oxidation?

When a thin layer of oxide is grown on the wafer’s surface, the process is known as thermal oxidation.

For more than 40 years, the recuperative thermal oxidizer, i.e., Oxi.X TR system, has been used to exterminate pollutants from exhaust air. These systems include thermal processes for exhaust air volume flows of 1000 Nm3/h or more.

Oxi.X TR benefits

  • Incoming concentrations of up to 25% of the lower explosion limit
  • Less maintenance
  • Flexibility imparted by an adjustable heat exchanger
  • Long life span of the machine due to its robust design
  • The advanced burner provides maximum flexibility and can easily be replaced
  • Energy consumption can be decreased by 15%
  • Minimal capital expenditure
  • Lightweight and small footprint

Operating principle Oxi.X TR

In all thermal processes, the exhaust air is heated to an adequately high temperature to oxidize the pollutants (hydrocarbons), which produce steam and carbon dioxide. With the help of hot clean air present in the Oxi.X TR Air Pollution Control System (recuperative heat exchanger), the polluted air is heated. This permits a large portion of the combustion heat to be recovered.

The burner heats the air residing in the combustion chamber to over 700°C. As a result, the process of oxidizing the pollutants begins, which gets completed after the passing of exhaust air through the chamber. The incoming exhaust air is pre-heated when heat is removed via passing hot clean gases into the exhaust air heat exchanger.

In the oxidation process, primary energy is consumed depending on the heating value and quantity of the pollutants. Due to this reason, in the Oxi.X TR Air Pollution Control System, liquid gas, heating oil, natural gas and other organic fuels can be used as supplementary fuels.

Application areas Oxi.X TR

In the production process, the energy extracted from the clean gas via downstream heat recovery systems can be used again when the recuperative thermal oxidation process is particularly cost-effective. However, this leads to the requirement of a high amount of energy for operating the dryer. Thus, the Oxi.X TR system is widely used to control air pollution in drying processes. Globally, this system is used in almost all kinds of painting processes, including small automotive components and vehicle bodies to wallpaper and flooring.

Paints or coats that are made with silicon are often used in these industries. The significant advantages of using these materials are the efficacious thermal oxidation procedure and the relative insensitivity of the Oxi.X TR system to silicon dioxide (SiO2) deposits.

Technical specifications Oxi.X TR

For exhaust volume flows of between 1000 and 40,000 Nm³/h, the Oxi.X TR (recuperative thermal oxidation) system is developed. This technology is cost-effective when there are moderate levels of pollutants and is perfect for plants with secondary heat recovery systems.  The contaminants in process exhaust air are oxidized between 680 and 740°C by Durr Air Pollution Control System and can be used for organic pollutants.

Construction Oxi.X TR

The burner, the integral heat exchanger and the combustion chamber are included in the Oxi.X TR compact unit to pre-heat the exhaust air.  Due to the scalable design of the Dürr Oxi.X TR Air Pollution Control Systems, the machine requires minimal maintenance and has a long life span. The highlights of using this burner are:

  • Easy flexibility of the device according to customer requirements
  • At any point in time, it can be replaced

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