Industrial applications of Dürr air pollution control systems
Paint Shops for the automotive and other branches of industry Dürr offers adsorption systems to purify exhaust air from paint lines (Ecopure® KPR concentrators). Here, in compliance with statutory regulations, VOCs are removed from a relatively large volume of exhaust air before this is passed on as a small exhaust stream to a thermal oxidation process, usually a primary energy saving regenerative thermal oxidation plant (Ecopure® RTO), for further cleansing. As part of an energy management approach the heating energy contained in the exhaust stream is used to preheat the supply of fresh air needed for the paint lines.
Recuperative thermal oxidation systems (Ecopure® TAR) are installed to cleanse pollutant laden exhaust air from paint curing ovens. The heating energy released by this process is used direct as a source of heating for the drying zone.
Printing and Coating Industry
Pollutants in exhaust streams from these machines are oxidized and the heating energy released by the process is used for fully regenerative preheating of exhaust air. No primary energy is required during normal operation of a Dürr regenerative thermal oxidation system (Ecopure® RTO). This is known as “flame free oxidation”. In addition heating energy can be drawn off and led to the thermal oil system for use in machine heating.
Pharmaceutical and Chemical Industries
After oxidation of the pollutants present in exhaust gas streams that arise in the chemical and pharmaceutical industries it is necessary to eliminate from the waste gas any halogenated hydrocarbons in the inorganic residues by means of absorption and/or a catalytic reactor is required to separate nitrous oxides into nitrogen and oxygen. Here, too, Dürr optimizes energy management within exhaust air purification systems – if liquid solvent residues are available they are put to use in order to save primary energy.
Waste Recycling Industry
The strong odors that are produced during the processing of meat waste, in the manufacture of animal feed or in the handling of municipal waste can be removed by regenerative thermal oxidation. Here Dürr’s very reliable metal to metal damper seat system has shown its capability in ensuring the sustained high level of destruction efficiency required.
Composite Materials Industry
This branch of industry manufactures products designed to lighten weight – that of cars for example. During this process pollutants are also produced that need to be removed from the exhaust stream. Dürr offers adsorption concentrators and regenerative thermal oxidation air pollution control systems for handling such industrial process exhaust streams.
Foundries
Modern molding and casting processes give rise to exhaust streams laden with organic pollutants. Dürr regenerative thermal oxidation systems deal with these.
Semi-conductor industry
Semi-conductor manufacturers need adsorption concentrators and regenerative – or in the case of smaller plants – recuperative oxidation systems to cleanse the exhaust air produced in the manufacture of electronic components. Here, again, Dürr is the partner of choice.
Wood Processing Industry
In wood processing, in the manufacture of chipboard and paneling for example, pollutants are produced not only in the form of dust but also as residues that are organic, volatile, malodorous or that contain formaldehyde. These are removed from large volumes of exhaust air by wet electrostatic filters and regenerative thermal oxidation. Once again Dürr’s energy management concept increases efficiency: individual exhaust streams can be recirculated to concentrate pollutant levels and save heating energy.
Wide range of Services available for all Ecopure® plants
To ensure maximum plant availability Dürr Environmental and Energy Systems offers comprehensive and reliable service assistance for all Dürr plants. The range includes, for example, a 24 hour hotline service and remote diagnosis via modem. Dürr provides innovative revamp concepts to update older plants to the current state-of-the-art. As a result emission compliance can be assured, operating costs lowered and plant availability increased.