Oschatz Power GmbH products

Tried-and-tested waste heat boilers for energy recovery and the use of heat from exhaust air from sinter coolers form a substantial part of the extensive Oschatz portfolio. These cool hot sintered material with ambient air. By means of the hood construction above the sinter cooler, the heated cooling air is collected and processed in a waste heat boiler to generate steam and/or hot water. The installation of an Oschatz waste heat boiler means that the significant heat being produced can be captured, saving large amounts of primary energy. Waste heat boilers for installation downstream of both sinter belts and sinter coolers with and without auxiliary firing and incorporating hot air recirculation from sinter coolers provide combustion air for auxiliary burners. If desired, it is also possible to raise the temperature level of the waste heat boiler through the installation of a gas burner. Superheated steam can then be produced for running a steam turbine.

An example for the Direct-reduction process systems is the Hlsarna process, which was developed as part of the ULCOS project (Ultra-Low Carbon Dioxide [CO2] Steelmaking). This has the goal of halving the carbon dioxide emissions in steel production. Oschatz built waste gas cooling sections in connection with the HIsmelt process for the first time in 2005; these have been successfully used in the HIsarna process since 2011. This forward-looking process combines the preheating and partial pyrolysis of the coal in the reactor, the melting cyclone for melting iron ore and the melting crucible for subsequent reduction of the iron ore and iron extraction. The consumption of coal is thus reduced, which results in a significant cut in carbon dioxide emissions. The round design conceived by Oschatz. provides a particular contribution to ensuring maximum efficiency in the production of steel.