Kappa realises large dedusting plant at Bous steelworks
The Bous steelworks in Saarland, which has been in operation for more than 130 years, has invested in a new large-scale dedusting system from Kappa. The Kappa Zeron® dedusting system is designed for an air capacity of 1.3 million cubic metres per hour at a raw gas temperature of 105°C. The filter system is currently operating at 1.1 million cubic metres. The Kappa Zeron® separates 24,000 kg of fine dust every day.
'The investment is a clear commitment to the production site in Bous and sends a clear signal: this is how the production of high-quality steel in Germany can be harmonised with environmental protection.’ Franz Josef Schu, Managing Director of Stahlwerk Bous GmbH.
Task definition
The previous dedusting system dated back to the 1980s. It supplied the three-phase electric arc furnace in Bous, which produces up to 70 tonnes of steel per melting process. The extraction capacity of 560,000 cubic metres per hour was no longer sufficient. An increase in output was no longer feasible.
The premises for the new planning of the plant were clear:
The air flow rate must be increased to the volume required over the long term.
Kappa Zeron®
The large dust extraction system from Kappa takes a completely new approach. It is a separate, high-quality filter building in which all essential filter functions are integrated compactly and efficiently from inlet to outlet: Pre-separation chambers, raw gas plenum, filter chamber, clean gas chamber, clean gas plenum, clean gas duct, dust discharge room, control room, penthouse, etc. The integration of all necessary functions and the air routing enables an optimum air flow without turbulence and leads to an even distribution of the air flow to all filter chambers. This leads to improved function and significantly reduced system resistance and energy consumption.
Clean:
The Kappa Zeron® purifies 1.1 million cubic metres of air per hour. If you line up cubes with a side length of one metre, the snake stretches from Steyr to Paris in the west and to Gdansk in the north-east. The plant separates 24,000 kilograms of dust per day. This corresponds to the daily particulate emissions of: 53 cruise ships 5.3 billion car kilometres in accordance with the Euro 6 emissions standard 133,000 cars that circle the equator every day.
Economic:
The Kappa Zeron® has a significantly lower system resistance than conventional systems. This reduces electricity consumption during operation by over 2 million kilowatt hours per year. This corresponds to the annual energy consumption of 450 Austrian households and an annual CO2 saving of around 58,360 car journeys from Steyr to Vienna.
