Liquid Natural Gas (LNG) and Marine Applications

We offer marine propulsion solutions for LNG, LPG, ammonia, and other alternative fuels. Our marine-rated vertical and V-type compressors, based on robust API 618 designs, can be used for the fullrange of marine propulsion, BOG treatment, and re-liquefaction applications.

For the propulsion and on-board power generation systems, depending on the engine concept, typical pressures needed are 10-20 bar for four-stroke engines and 150 to above 300 bar for two-stroke concepts. Using an excellent controllability of the contact ring-type piston compressors also combinations with screw compressors from partner companies are possible if the suction pressure is very low.

Reliquefication of the boil-off gas is mostly used on bigger bunkering vessels and on large LNG carriers, when the BOG flow exceeds the propulsion and power generation engines demand. This can be either done by side streaming a part of the fuel gas compressor flow or by employing a dedicated system.

read more about our LNG Compressors