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Scheuch GmbH
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Collecting Exhaust Air Plants

Collecting Exhaust Air Plants

Iron and steel production creates a large amounts of dusty exhaust air containing heat, and these have to be collected in a way that best serves the interests of both employees and the environment – at a justifiable cost. In existing plants, we evaluate both the quantity and the quality of the exhaust air flows (volume flow rate, temperature, behaviour over time) by recording videos. Taking into account any production-related restrictions, we use CFD simulation to develop potential collection measures and compare these with one another. Using this as a basis, we can then work together with the plant operator to pinpoint the most appropriate configuration. When designing new plants, we draw on both available process plant manufacturer information and our own experiences to determine the anticipated exhaust air flows. Using CFD simulation, it is possible in this case too to compare multiple options and work out the best configuration on this basis.

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EXTRACTION HOODS
Secondary collection of exhaust air
Producing and processing metals generally creates significant exhaust air volume flow rates - with energy consumption and contamination levels to match.

In this sector, not all processes or treatments can be directly coupled to or enclosed in extraction devices. This means that emissions (dust, waste heat, gaseous substances, etc.) have to be collected using secondary methods-that is, at a location other than the point where they arise - in order to achieve the desired level of air quality in the working area or environment in question. The emission stream dilution associated with this technique determines the required collection flow volume and therefore has a direct impact on the investment and operating costs for the dedusting plant.

Scheuch adopts a methodical approach to determining the characteristics of the emission stream in a verifiable way (observations are made during operation and then documented and evaluated) and to creating the ideal extraction hood design using CFD, with basic operational conditions taken into account.