Siemens to Modernize Offgas Cooling in Eisenhüttenstadt for ArcelorMittal
08/08/2013 - ArcelorMittal Eisenhüttenstadt in Germany has awarded Siemens Metals Technologies an order to equip the off-gas cleaning system on LD (BOF) converter No. 2 with a new cooling stack.
This will also involve the installation of a new dual flow nozzle spray system which will facilitate better conditioning of the converter offgas. The new cooling stack is due to go in operation in June 2014. The order also includes an option to install a cooling stack on converter No. 1.
Pictured below: Computer animation of Simtal ECO Prime Cooler, a highly efficient converter offgas cooling system with additional steam production from Siemens.
Siemens will be responsible for the design, supply and installation of the Simetal ECO Prime Cooler, the dual flow nozzle spray system for the evaporative cooler, and a new hood car. The converter offgas will be collected in the cooling stack installed immediately above the converter. The gas must be cooled and pre-cleaned to prevent damage to downstream facilities. The waste heat transferred from the converter gas during cooling will be used to partially vaporize circulating water to produce saturated steam. Siemens will install new dual flow sprays to atomize the water in the evaporative cooler. These will enable improved conditioning of the dust in the converter gas and thus allow optimum operation of the evaporation cooler thanks to precise regulation of the water-steam mixture. A traversable, locking mechanical seal is also part of the scope of supply. It requires little maintenance and has a long service life.
Siemens will also renew the piping in the steam system and replace some of the field devices and instrumentation. Siemens and ArcelorMittal will make the necessary modifications to the platforms and steel structures. The project also includes dismantling the previous equipment and supervising the installation and commissioning work.
ArcelorMittal is the world's biggest steel producer and a global supplier of highquality steel products. The company is present in 60 countries and employs a total of 245,000 people. Eisenhüttenstadt primarily produces high-quality, coated sheet metal for the automotive industry, together with steel products for domestic appliances and the construction industry. The then VAI was involved in the construction of the plant in 1984. The equipment supplied included the cooling chimneys, which have been in use since that time.
