EUROPEAN STEEL TECHNOLOGY AND APPLICATION DAYS 2017 - ESTAD 2017

For cleaning of primary gases from BOF-process, the well approved wet scrubbing technology is worldwide the most applied technology. Most of these installations are running for more than 20-30 years. They were originally designed for compliance with environmental regulations much less stringent and complex than nowadays. The revamp, upgrade and retrofit of these systems to fulfil actual requirements with lowest investment and shortest shut down times is one of the main demands. For this purpose, a multi-access strategy has been developed and stepwise implemented. This strategy comprises of: - Field measurements to improve understanding of operational behavior - Technical-tests with a 1:1 scale test-rig supported by comprehensive CFD-simulations - Development of wet-ESP technology as a retrofit option - Advanced/improved control technologies to reduce energy consumption Main results of the works will be described. It has to be accentuated, that any solution has to be developed and implemented under close consideration of various site specific factors, such as available space, actual operational practice, type and make of scrubber, requested target figures.