Acid Regeneration Plants for hydrochlorid and mixed acid in steel pickling or mining, using a "Zero Effluent" approach Removal of nitrogen oxides (NOx) Reduction of CO 2 in strip annealing and galvanizing with electrically heated furnaces “Green Steel CGL” Lines for AHSS steel for automotive light-weight design Reduction of CO 2 in heating processes with H 2燃烧器