"NOx treatment is already one of our fastest growing markets, with a 35 per cent increase in the first half of 2007," said Yara president and CEO, Thorleif Enger. "Through the cooperation with Wilhelmsen, we're expanding our commitment to the maritime sector, which we see has a big potential."
Yara says that its deNOx solution could cut emissions of the gas from ships by 95 per cent. The removal process involves a catalytic technology already in use by land-based industry and transport, as well as on a number of coastal cargo vessels in Norway and Sweden.
The concept is based on adding a type of urea solution to the exhaust fumes from the ship's engines. The mix then passes through a catalytic converter where NOx from the exhausts reacts with the solution, and is converted into water vapour and nitrogen.
The technology is intially envisioned for use by vessels engaged in trades typically conducted close to land and covered by emissions regulations, such as ferries, fishing vessels, supply ships, and cruise liners.
Yarwil says that it is currently possible to remove NOx emissions from diesel generators on large ocean-going vessels, but that technology necessary for that particular type of propulsion machinery remains under development and will not be available until some time in the future.