A five-years collaboration between two ESWET members has led to the creation of an innovative mercury emission control system for coal-fired power plants.

“Wonderbed” is a groundbreaking moving bed technology devised by a team of experts from Steinmüller Engineering and IEM FörderTechnik.

The system helps coal-fired power plants to keep mercury emission limits under 5 µg/m³ in lignite, as required by new regulations.

In addition, “Wonderbed”:

• Allows to significantly reduce operating costs compared to the existing powdered activated carbon (PAC) injection method
• Can be implemented as an optimisation measure in existing power plants where space is limited

The joint project between IEM FörderTechnik and Steinmüller Engineering began in 2019 and led to the first moving bed trial at a large-scale plant in May 2024.