Exhaust Air and Exhaust Gas Cleaning

Exhaust Air and Gas Cleaning

SCR Retrofit at the "Hermann Wenzel"
Power Plant Unit IV,

Duisburg-Ruhrort

THE TASK

thyssenkrupp Steel Europe AG operates the gas-fired "Hermann Wenzel" power plant with a total of four units at the Duisburg-Ruhrort location. Unit IV is operated in mixed mode with blast furnace gas and coke oven gas. In order to match the nitrogen oxide emissions in accordance with the emission directives, a nitrogen oxide reduction system had to be retrofitted

THE SOLUTION

To reduce nitrogen emissions, an SCR system was retrofitted in Unit III. In addition to the integration of the new SCR reactor, the scope of supply included the provision and supply and storage of the reducing agent up to the injection into the flue gas path, including the associated piping, control and measurement technology.

In order to ensure safe load transfer, the loads of the SCR in unit IV had to be transferred directly into the building's main supports or the foundation soil via additional structures. Compliance with the required denitrification rate is achieved with only one layer of SCR catalyst.

The catalyst level can be walked on. The integration of the SCR system into the existing power plant boilers worked perfectly. The stricter emission values are reliably maintained.

For more information, please see our reference sheet.