Air Quality Control Systems and Components - Hitachi Power ...

SCR for Lignite and Dry LigniteLignite Power PlantBoxberg (Unit Q +R)Ideally Prepared to Face New DemandsUp to now, secondary nitrogen oxide reduction measures (SCR technology) have onlybeen necessary to meet the prescribed low nitrogen oxide emissions for pit coal.But from 2102 revised standards will, in fact, apply generally to all coal-fired power plants.In-furnace control measures are not sufficient to meet the requirements of the “13th BimSchV”(German Immission Protection Ordinance) for lignite of a max. 100 mg/m³ of NO X emissions.Hitachi Power Europe is ideally prepared to face this fact. For lignite, the air quality controlsystem experts are making use of the pit coal-proven SCR technology – one which willundoubtedly adhere to the revised standards. Even so, examinations are needed into theimpact of the lignite fuel on the catalyst – something which Hitachi Power Europe is collectivelyundertaking with a major power operator. It is to be found out if the differing pit coalconstituents give rise to any catalyst abrasion or ageing.18161412108642Gas Speed0 Velocity (m/s)Graphics animation of a CFD analysis(CFD = Computational Fluid Dynamics)Air Quality Control Systems 11