Langh Tech Develops Water Treatment System for EGR Systems

Friday March 3, 2017

Langh Tech Oy Ab (Langh Tech) today announced that, through work with MAN Diesel & Turbo (MAN or MDT), it has developed a water treatment system to be used for cleaning the process water of Exhaust Gas Recirculation (EGR) systems, used to reduce NOx emissions to meet Tier III requirements.

Langh Tech explains that, with about one third of the exhaust gas recycled back into the engine during EGR system's process, it has applied its water treatment technology to continuously clean the process water from exhaust gas washing during EGR operation.

The water treatment technology is said to be based on membrane filtration, which keeps operational costs low, producing waste that consists of only small amounts of compact dry sludge.

Lang Tech notes that the first test runs of the system, which used a small-scale prototype built into a container, were carried out in December 2015 at the MAN testing facility in Copenhagen.

"The results were good, leading to continued and deepened cooperation between the companies," explained Langh Tech.

"The process has been fine-tuned over time, and now MDT has granted approval for the Langh Tech water treatment system to be used in combination with the EGR process. The approval process includes a long-term testing period in cooperation with MDT."

In May, Langh Tech announced that its hybrid scrubber systems would be featured on two Norwegian Cruise Line (NCL) newbuildings of the Breakaway Plus class.