GEA presented technologies for reducing emissions in marine propulsion systems. A key focus was the GEA NOx Separator, designed to treat wash water in EGR and iCER systems. It supports compliance with IMO Tier III nitrogen oxide (NOx) emission limits.

NOx reduction in EGR and iCER systems

As dual-fuel engines become more prevalent and emission regulations become more stringent, handling wash water from EGR and iCER systems has become a critical aspect of ship design. The GEA NOx Separator is designed to reliably separate and treat wash water in exhaust gas recirculation systems. It ensures stable operation across a wide range of engine loads and operating conditions.

This system is intended for new-build projects and helps shipowners and engine manufacturers meet emission limits while protecting downstream equipment from corrosion and fouling.

Application in methanol dual-fuel propulsion

Methanol dual-fuel engines are being adopted more frequently as an alternative propulsion concept because they can significantly reduce greenhouse gas emissions compared to conventional fuels. In this context, controlling NOx emissions is a critical technical requirement, and alternative fuels like methanol are key to making shipping operations more sustainable.

GEA supplies NOx separators for wash water treatment in 5S50ME-C9.6-LGIM+EcoEGR Tier III methanol dual-fuel engines manufactured by Everllence. These engines are being installed on 1,250-TEU container ships currently under construction at Huangpu Wenchong Shipbuilding for Singapore-based feeder shipping company X-Press Feeders. According to GEA, the initial units have already entered the commissioning phase.

Contribution to low-emission ship design

The GEA NOx Separator is part of the company’s broader portfolio of marine system applications to address regulatory requirements related to air emissions and support the integration of alternative fuels in maritime transport.

As regulatory pressure increases and technology continues to develop, solutions for exhaust gas treatment and wash water management are expected to remain a central component of low-emission ship design in the coming years.