The latest generation of the Ecopure® RTO is designed for future stricter emission limit values
Bietigheim-Bissingen, May 4, 2018 – The planned amendment of the German air pollution control regulation, “TA-Luft“ sets lower limits for hydrocarbons and will trigger the need for action on exhaust air treatment at many chemical and pharmaceutical companies. With the Ecopure® RTO, Dürr will present the latest system generation for regenerative thermal air pollution control at ACHEMA, June 11 to 15, 2018 in Frankfurt, which will help meet the stricter specifications. In addition, the systems manufacturer, together with its subsidiary, Luft- und Thermotechnik Bayreuth GmbH (LTB), will present strategies for preparing existing plants for future requirements.
Hydrocarbons (VOCs) accumulate continuously in manufacturing processes in the chemical and pharmaceutical industries while regulations continue to increase. Based on the OFC enforcement recommendation made on March 26, 2015, TA-Luft will soon reduce the VOC limit value from 20 mg/m3 to 5 mg/m3.
The latest generation of the Ecopure® RTO achieves this low value reliably and economically: The air pollution control system, which works on the principle of regenerative thermal oxidation (RTO), will be equipped with some improvements. Leakage flow is avoided through high tolerance, tight sealing dampers. In addition, the residence time is increased and the purging cycle is optimized. New heat ex-changer materials allow a lower autothermal point, resulting in a very high degree of destruction efficiency (DRE). Thus the exhaust air is treated to a level of 99.8 percent DRE.
If legal limit values are tightened, existing air pollution control systems must be inspected to see whether they meet the new requirements or not. This requires an exact analysis of the current operating situation, because in the majority of cases the conditions change over time, for example due to increased production capacity or new emission sources. As a result, the retention time of the exhaust air in the RTO is reduced and thereby the requested clean gas value can no longer be achieved.
Photo 1: Installed Ecopure® RTO
Dürr and LTB have focused on air pollution control systems for decades and are world market leaders with more than 4,000 systems installed. This experience is used by the service teams for feasibility studies, targeted measures, and to upgrade existing plants by installing sealed valve systems or modified purging cycles. Such optimizations do not only improve the clean gas values, but also significantly reduce the energy consumption of an air pollution control system.
The Dürr Group is one of the world's leading mechanical and plant engineering firms with extensive expertise in automation and digitization/Industry 4.0. Products, systems and services offered by the Group enable highly efficient manufacturing processes in different industries. Dürr supplies sectors like the automotive industry, mechanical engineering, chemical, pharmaceutical and woodworking industries. The company has 92 business locations in 31 countries. The Group generated sales of € 3.72 billion in 2017. Dürr has around 15,000 employees and operates in the market with five divisions:
• Paint and Final Assembly Systems: paint shops and final assembly systems for the automotive industry
• Application Technology: robot technologies for the automated application of paint, sealants and adhesives
• Clean Technology Systems: exhaust-air purification systems and energy efficiency technology
• Measuring and Process Systems: balancing equipment as well as assembly, testing and filling technology
• Woodworking Machinery and Systems: machinery and equipment for the woodworking industry
Dürr Systems AG
Clean Technology Systems
Phone +49 9273 500 150
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