Reducing sulphur dioxide emissions
Various desulphurisation techniques have been used in Wärtsilä power plant applications. On the marine side, scrubbers can be found economically very attractive in meeting the future IMO sulphur requirements. Wärtsilä's on-going development and commercialisation project regarding a fresh water marine scrubber is successfully proceeding. The technology developed by Wärtsilä was approved during summer 2009 by two major classification societies, and is thus the first such certified solution in the world. Wärtsilä will deliver a marine scrubber to a containership in August 2011. This is the first commercial marine scrubber project for a main engine. As a next stage, the development project for a novel hybrid scrubber capable of being operated both with fresh and sea water is ongoing.
Low sulphur fuels
The coming regulations limiting the sulphur content in marine fuels will inevitably create some new challenges for customers. Low sulphur fuels have, in most cases, lower viscosity than ordinary fuels, and this will affect the behaviour of the fuel injection systems in diesel engines. Therefore, modifications are often recommended, not only to the engine but also possibly to boilers. Wärtsilä will be able to offer its customers support in adapting to future low sulphur fuel qualities.