Exhaust Gas Recirculation and also Selective Catalytic Reduction systems reduce NOx and also optimize effectiveness
GUY Energy Solutions’ Two-Stroke Business has actually introduced that it has actually gone beyond 2,000 orders for IMO MARPOL Annex VI NOX Tier III-compliant modern technologies for its profile of male B&W two-stroke engines. The brand-new landmark happens simply over a year after the business introduced the passing away of the 1,000 landmark in January 2021.
Bjarne Foldager– Senior Vice President and also Head of Two-Stroke Business– GUY Energy Solutions, stated: “This welcome milestone is built on the experience we have gathered over the past decade. Our fully-mature EGR and SCR systems deliver Tier III NOx-compliance and improve engine performance in terms of increased fuel efficiency and lower, general emissions. Our ability to treat a ship as a complete system gives us a clear market advantage that enables us to prioritise environmental considerations and system integration.”
Among various other data, GUY Energy Solutions records:
Determined by birthed dimension, 50- and also 60-bore male B&W engines make up the majority of NOx services (37%);
EGR make up 724 vs 1,292 SCR services.
Furthermore, the business reports that some 67 engines were geared up with EcoEGR, standing for concerning 9% of all EGR services. EcoEGR is an adjusting approach that decreases gas intake by recirculating a percentage of exhaust gas while running in Tier II.
Foldager included: “Considering how NOx Tier III limits were only introduced in 2016, shipping has come a long way in a short period of time. MAN Energy Solutions is rightly proud to have brought three technologies – in the form of EGR, and low- and high-pressure SCR variants – to market such that every owner and ship designer can select what best fits their individual project.”
In connection to EGR, Stig B. Jakobsen– Senior Manager, Two-Stroke Operation– GUY Energy Solutions, stated: “More than ten years of service experience with our EGR design has enabled us to introduce refinements and optimisations. The latest design is a perfect example of such optimisation since we employ our fourth-generation EGR in our low-pressure, dual-fuel ME-GA engine. EGR has become an integral tuning tool for each of our low-speed engines and its maturity will allow us to further explore the potential for optimising engine performance well into the future.”
NOx services
Exhaust Gas Recirculation (EGR) protects against the development of NOx by regulating the burning procedure, while Selective Catalytic Reduction (SCR) makes use of a stimulant and also an additive to get rid of the NOx produced by the burning procedure as an after-treatment procedure.
Uniquely for the two-stroke field, GUY Energy Solutions uses both EGR and also SCR as exclusive NOx services. The business has lengthy experience with EGR modern technology and also reported its very first order currently in 2011, while its very own in-house-developed SCR-HP (-High Pressure) won its very first order in January 2019. This includes a dramatically decreased reactor-size, contrasted to competing systems, to which GUY Energy Solutions has actually been giving system authorization given that 2014.
Methanol- sustained, GUY B&W LGIM engines have an unique function as discussed by Kjeld Aabo– Director of New Technologies– GUY Energy Solutions: “Through using water solution in the methanol, we have the ability to get to Tier III degrees in methanol fuel-mode, totally eliminating the demand for a devoted NOx-abatement modern technology. Our intro of this on our G50-LGIM engine obtains us extremely useful solution experience– particularly in the methanol-carrier sector– while we see an extremely clear need for complete Tier III-compliance throughout all gas kinds outside this sector using EGR.
Sea News, May 6
