【作者】

Jan Torrkulla

【摘要】

该论文已在赫尔辛基举行的第28届CIMAC大会上发表，论文的版权归CIMAC所有。ABSTRACT SCR is a known technology and significant experience also exists from applications on ships. The new IMO Tier III rules will however mean installation of SCR into new applications and involve parties without prior experience of SCR. This article will summarize the status of Wärtsilä SCR development and provide new information on how to ensure trouble free installation and operation. The SCR is not a separate system that can be configured separately from the rest of the ship system. Planning, procuring, installation and final tuning of the system need to take into consideration the specific features of the installation. The SCR needs to be designed for the complete operation window and operating conditions of the engine in the actual installation. Results will be presented on how the fuel and operating conditions influence not just the optimal catalyst system setup, but the overall selections made to full-fill Tier III operation requirements in ECA’s. Thermal management of the catalyst system is a critical feature in a successful SCR installation and data will be presented on how optimized engine tuning and catalyst setup handled together will ensure the trouble free SCR operation. The article will present how SCR integration with engine plays a crucial role in ensuring high SCR performance and durability. Urea dosing control and the need for NOx measurements is a key design feature of SCR systems. Pros and cons of different control strategies will be presented. SCR can be successfully operated also with low grade fuels if the system is properly designed. This gives an advantage to optimize urea and fuel consumption in different operational areas and profiles. Follow-up data from existing SCR installations is presented. This information combined with other operating experience and supporting results from e.g. CFD simulations is used in the design of more robust and safe to operate SCR systems.

【会议名称】

第28届CIMAC会议

【会议地点】

芬兰 赫尔辛基

【下载次数】

3

返回