Secondary Collection Of Exhaust Air In The Metals Industry

The production and processing of metals usually creates considerable amounts of exhaust air containing corresponding amounts of energy and pollutants. It is not possible to enclose or directly extract all of the processes and processing steps in this industrial sector. Instead of being collected directly where they occur, emissions (dust, waste heat, gasiform substances) must then be collected using secondary systems in order to achieve the desired air quality in the workplace area or in the affected surroundings. The associated attenuation of the emission stream determines the required collection stream and directly affects the capital investment and operating costs of the dedusting plant.

In actual practice, extraction systems are designed as far as possible in terms of targeted costs, but ventilation systems can only be used effectively and economically when there is sufficient knowledge of the respective emission sources and collection devices and when the ventilation system and equipment are harmonized as closely as possible, i.e., when they are designed, selected and dimensioned as an integrated system. We began a comprehensive R&D project in order to optimize the collection of secondary exhaust airflows and to also increase the efficiency of the overall dedusting plant.