Babcock launches ethane BOG reliquefaction technology

Babcock LGE's new ecoETHN ethane BOG technology allows methane content up to 2.0 mol% in the liquid phase to be transported. (Credit: Babcock LGE) Babcock LGE's new ecoETHN ethane BOG technology allows methane content up to 2.0 mol% in the liquid phase to be transported. (Credit: Babcock LGE)
Industry Database

Babcock International, a global leader in liquefied gas cargo handling systems, has launched an ethane Boil Off Gas (BOG) reliquefaction technology, ecoETHN™, to its portfolio of solutions. The patent pending ecoETHN technology integrates the reliquefaction system with the fuel gas supply system, enabling reliquefaction of ethane-rich BOG that can be used as fuel for main engine and auxiliary power generators. It utilises Babcock’s existing SuperCooler™ and VentGasCooler (VGC™) technologies.

Neale Campbell, Managing Director, Babcock LGE said: “ecoETHN is a breakthrough addition to our portfolio of gas handling technologies. We continue to challenge ourselves and develop solutions that we believe will meet the current and future needs of our customers while providing environmental and commercial benefits within the gas handling market.”

ecoETHN is designed to handle ethane cargoes with high methane content of up to 2.0 mol% in the liquid phase, and also effectively handles methane enrichment in the BOG more efficiently than conventional reliquefaction solutions.

Utilising Babcock’s SuperCooler and VGC technologies, the system allows selection of BOG compression and refrigerant systems removing the traditional constraint to fully condense the BOG in a single step, thus maximising efficiency.

When combined with ethane fuelled engines, the system uses cold energy in the low temperature ethane fuel stream, to increase the efficiency of the overall system by cooling the BOG. A portion of the methane rich stream can also be blended into the fuel, reducing the amount of valuable ethane component in the cargo that would otherwise be consumed as fuel.

In addition, low and medium pressure methane rich gas streams from the reliquefaction system can be used as fuel for auxiliary power generators, thus utilising an even greater proportion of the methane-rich BOG rather than fuels such as LSFO or MGO, bringing environmental benefits.

The system has the additional benefit of utilising the BOG ‘fuel’ in the auxiliary engines during loading, when, generally, the main engine is not consuming any fuel – improving the loading rate and creating further cost savings to end-users.

On a typical deep-sea voyage, ecoETHN, when integrated with ship main engine and power generation systems needs only one reliquefaction system, giving CAPEX and OPEX benefits. It is a cost effective solution that minimises both capital and operational expenditure through the unique combination of reliquefaction and a fuel delivery system, and is already attracting significant interest from a number of global ship owners and shipyards.

LATEST PRESS RELEASES

OUTSTANDING CUSTOMER SERVICE FROM VICKERS OILS.

When a customer in Singapore contacted Vickers Oils needing urgent help, we were able to deliver des... Read more

Vickers Oils BIOGEAR XP – “10 years trouble free operation”

Trinity House, a UK based charity dedicated to safeguarding shipping and seafarers since 1514, has b... Read more

Stolt Tankers and DESMI Ocean Guard sign Frame Agreement

Stolt Tankers and DESMI Ocean Guard sign Frame Agreement for the Supply of CompactClean Ballast Wate... Read more

DESMI Ocean Guard’s CompactClean Ballast Water Management System receives

DESMI Ocean Guard’s CompactClean Ballast Water Management System receives amended US Coast Guard Typ... Read more

Making hard choices for materials that last the distance

DESMI has gained a solid reputation over the years for selecting exactly the right materials for its... Read more

Leading the way in lube oil pumps

Leading the way in lube oil pumps Read more

View all