Hitachi Zosen Corporation has announced that it received an order today from a major Chinese manufacturer of large marine diesel engines, Dalian Marine Diesel Co., Ltd., for two units of a high-pressure selective catalytic reduction (SCR) system. This represents the first commercial order for exhaust gas removal equipment compliant with Tier III nitrogen oxide (NOx) emission standards* taking effect in January 2016 by one of Japan’s leading manufacturers of large marine diesel engines.
* Tier III NOx emission standards: The third level (tier) of controls set by the International Maritime Organization (IMO), requiring an 80% reduction in NOx emissions from operating marine vessels compared to Tier I standards.
The SCR system will be installed in chemical tankers owned by a European shipping enterprise. Hitachi Zosen will deliver to Dalian Marine Diesel, which was contracted to manufacture the marine diesel engines by Chinese shipyard AVIC Dingheng Shipbuilding Co., Ltd.
The order comes as a result of the high reliability of the system and makes Hitachi Zosen the global frontrunner in supplying systems designed to support maritime transport in compliance with environmental regulations.
“Hitachi Zosen is the only commercial distributor officially approved by the world’s leading licensor of large low-speed marine diesel engines, MAN Diesel & Turbo SE (Germany). We aim to make our marine SCR system the de facto standard of equipment compliant with Tier III environmental regulations,” says Jitsuhiro Yamaguchi, director of the Marine Machinery & SCR Systems Business Unit.
1. Client: Dalian Marine Diesel Co., Ltd.
2. Head contractor: Masuno Corporation
3. Shipyard: AVIC Dingheng Shipbuilding Co., Ltd.
4. Vessel: Chemical tanker (7,999 DWT) x 2 units
5. System: High-pressure marine SCR system x 2 units
6. Delivery: 1st unit October 2017 / 2nd unit November 2017
Features of marine SCR system
The world’s first marine SCR system developed by Hitachi Zosen uses a catalyst to render harmless NOx contained in the exhaust of diesel engines during operation. Hitachi Zosen is globally the only manufacturer of both large marine diesel engines and catalysts, and through in-house production realizes an ideal balance between compactness of the system itself and of catalyst volume, and the performance of catalytic activation.
The company offers high-pressure and low-pressure SCR systems for installation upstream and downstream of the turbocharger, respectively, for a flexible lineup to meet customer needs.
1. High-pressure SCR system
• Optimal system for compactness
• Simple auxiliary equipment for easy maintenance
• Low running costs
• Compatible with both high and low sulfur fuel
2. Low-pressure SCR system
• Requires no engine modification; adaptable to all engine types, sizes, and licensors
• Easy piping for multiple turbochargers
• Compatible only with low sulfur fuel
• Gentle on the environment with no waste emissions