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From commercial vehicles to marine diesels: The sustainable reduction of NOx emissions

High quality materials, a long lifespan despite operating in adverse environmental conditions, efficient cleaning: these valves provide long-term help in meeting legal requirements for the protection of the environment. For many years, technologies for the after treatment of exhaust gases have been used in commercial vehicles to reduce emissions of nitrogen oxides and other particles. Buschjost, with their well-engineered valves, have played a considerable role in these complex developments right from the very beginning. As a longtime supplier of exhaust gas purification systems with their production site located in Germany, Buschjost is now also concentrating on dealing with the special requirements in the area  of large diesel engines. Technical modifications to the worldwide tried and tested filter valves have made it possible for them to be deployed in exhaust gas purification systems, despite the extremely aggressive environmental conditions typically found there.

The initial position is clear: Worldwide, both national and international regulatory requirements in relation to exhaust emissions from large diesel motors will be tightened further. For marine diesel engines, they are mainly concerned with the reduction of nitrogen oxides (NOx) and sulphur oxides (SOx) From 2016, IMO level 3, the third stage of the IMO emission regulations will come into effect. From 2016, to reduce the emissions of nitrogen oxides, all marine diesels must be equipped or upgraded with the appropriate catalysts. If that is not the case, harbours will be closed to them and large penalty payments will be due.

Specialised filter valves demonstrate their strengths in the cleaning of catalysts. The aluminium valves are finished especially for this application so that they can survive the challenging operating conditions.

The valves are also equipped with a high-performance diaphragm, modified to meet these specific requirements, molded from a specialised TPE. Together, these technologies allow the valves to withstand the aggressive gases and guarantee them a long service life.

Buschjost is confident that these special filter valves will also prove themselves in other applications, for example in waste incineration plants or in steelworks. Positive feedback has already been received. Other possible applications for the valves could be found in electric generators for the generation of power. The sustainable reduction of harmful substances is an important subject in these areas as well.

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