Xeamos Zero-NOx Selective Catalytic Reduction Systems

Xeamos’ zero-nox selective catalytic reduction systems for 700- to 2,000-kilowatt diesels convert toxic nitrous oxides in the exhaust into nontoxic nitrogen and water using an airless urea treatment. The systems—designed for yachts from 100 to 165 feet length overall—enable marine diesel engines to comply with the International Maritime Organization’s Tier III emissions standards. This allows yachts access to sensitive areas including American and Canadian seaboards, the Baltics, the Caribbean Sea and high-latitude waters.

Daniel van Drunen, Xeamos’ sales manager, says the main challenge was developing a way to vaporize the urea that didn’t require a large air compressor. The solution: software and urea-injection controls that eliminated urea slip (read: ammonia smells). “By controlling the injection volume, [we] managed to get this done within a closed-loop system,” van Drunen says.

Integrated Control

Xeamos’ Zero-NOx SCR systems work with wet and dry exhausts, and can handle high back pressure and exhaust gas temperatures up to 1,112 degrees Fahrenheit. An integrated controller monitors the system, and Xeamos’ remote support enables a yacht’s chief engineer to tackle common service jobs. The system uses 24-volt DC, power.

Take the next step: xeamos.com

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