We use cookies, similar technologies and tracking services

This website uses cookies, similar technologies and tracking services (hereinafter referred to as “Cookies”). These Cookies help to display our website, improve it based on your user behavior (e.g., via Salesforce Pardot) and present content aligned with your interests (e.g., LinkedIn Insights, Google Ads). We require your consent to use Cookies. Additionally, we incorporate content from third-party providers (e.g., Microsoft Azure for single sign-on authentication), which could involve transferring your data to the United States, a non-secure third country. By clicking Accept All, you consent to the use of non-essential Cookies and to your data being transferred to third countries. Clicking Refuse enables you to reject the use of non-essential Cookies. Please select which Cookies we may use under Details. More information, particularly about your rights as a data subject, is available under Details or in our Privacy Policy .

Details

Refuse

Accept

Below, you can activate/deactivate the individual technologies that are used on this website.

Accept All

Essential

These Cookies make a website usable by providing basic functions such as page navigation, language settings, Cookie preferences and access to protected areas of the website. Cookies in this category additionally ensure that the website complies with the applicable legal requirements and security standards. Owing to the essential nature of these Cookies, you cannot prevent their use on our website. Details about these Cookies are available under More Information.

Functionality and personalization

These Cookies collect information about your habits when using our web pages and help us to enhance your user experience by tailoring the functions and attractiveness of our web pages based on your previous visits, location and browser settings. They also enable access to integrated third-party tools on our website (e.g., Microsoft Azure for single sign-on authentication). This can involve transferring your data to the United States, a non-secure third country. If you refuse these Cookies, you might not be able to access the full functionality of the website. Details about the tools we use are available under More Information.

Analysis

These Cookies are used to compile basic usage and user statistics based on how our web pages are used. If you accept these Cookies, you simultaneously consent to your data being processed and transmitted to the United States by services such as Salesforce Pardot. Details about the tools we use are available under More Information.

Marketing and social media

These Cookies help third-party sources collect information about how you share content from our website on social media or provide analytical data about your user behavior when you move between social media platforms or between our social media campaigns and our web pages (e.g., LinkedIn Insights). Marketing Cookies from third-party sources also help us measure the effectiveness of our advertising on other websites (e.g., Google Ads). We use these Cookies to optimize how we deliver our content to you. The third-party sources and social media platforms we use can transfer your data to the United States, a non-secure third country. If you accept these Cookies, you simultaneously consent to your data being transferred and processed as described above. Details about the tools we use and our social media presence are available under More Information.

More information

Save Settings

Oxi.X RK – Regenerative thermal oxidizer

Regenerative thermal oxidation (RTO) is used in a variety of industry sectors to purify exhaust air containing solvents and odors. Highly efficient regenerative thermal processes contribute significantly toward environmental protection. The RTO systems in Dürr’s Oxi.X RK series are designed for low and medium pollutant concentrations. Their key features include an excellent thermal efficiency of up to 97%, low-maintenance design and low operating expenditure.

Oxi.X RK Benefits

  • Small footprint
  • Compact design
  • System is supplied largely pre-assembled
  • Quick to install

Oxi.X RK Operating principle

During regenerative thermal oxidation, the exhaust air contaminated with pollutants is fed through a regenerative heat exchanger. This warms up the exhaust air, which is then very close to the reaction temperature when it leaves the exchanger. The combustion chamber converts all the pollutants into harmless substances by exposing them to a sufficiently high temperature. The now purified gases are fed through a heat exchanger again where they lose their heat. This heat is then used in the next step for pre-heating, completing the regenerative circuit. The purified, cooled exhaust air is then released from the system.
The Oxi.X RK RTO system features robust hinged dampers for changing the direction of flow. Because of their sturdy design, these dampers enable optimum bake-out – the thermal removal of condensate and tar at temperatures of up to 450°C. They are arranged in a damper box to provide favorable flow conditions, with all the bearings and the drive mounted externally to make maintenance easier.
The Oxi.X RK is especially suited to specific applications because of the various different designs available. For example, in one particular design the components and dampers that direct the gas are made of glass-fiber reinforced plastic (GFRP) to withstand damp, corrosive processes. There is also a special design for exhaust air containing tar, which can be produced during processes such as electrode manufacturing.
The individual regenerators are efficiently arranged together using specially designed partition walls to ensure a small footprint.

Application areas

The Oxi.X RK is suited to air pollution control involving low to medium pollutant concentrations. Thanks to their flexible design, the Oxi.X RK RTO systems can be used in a variety of different industry sectors:

  • Roasting processes in the food industry
  • Purifying exhaust air from chemical treatment plants (the GFRP design is used for this application)
  • Purifying exhaust air from anode, cathode and electrode production
  • Painting and coating applications
  • Reducing odors in the tire industry

Technical specifications

Depending on its size and design, Dürr’s Oxi.X RK air pollution control system can purify air flow rates of 1,500 to 70,000 Nm3/h (and even up to 150,000 Nm3/h in special cases).
The pollutant concentration input can be up to 8 g/Nm3. If a particular application produces greater concentrations, fresh air or recirculation gas can be added or a hot gas bypass used.
The overall thermal efficiency is up to 97%.