Wärtsilä ship power
engine sales vice-president Lars Anderson said: "The option to utilise ethane
gas as a marine fuel further extends the fuel flexibility of our DF engine portfolio.
"It also provides
yet another option to achieve compliance with the IMO's stringent Tier III
legislation." According to Wärtsilä, the 50DF marine engine will be capable of
switching between LNG, LEG, light fuel oil (LFO) or heavy-fuel oil (HFO) without
any modifications to hardware and interrupted operation.
The capacity to
burn ethane boil-off gas as engine fuel will enable the vessel
to reduce the need for gas re-liquefaction during the voyage. This will result
in lower power consumption for the cargo-handling and an efficient and
environmentally sound system.
Evergas CEO Steffen
Jacobsen said: "It increases our operational efficiency and improves flexibility
in the bunkering of fuels.
"It also enables us
to offer our customers increased flexibility, which has a monetary value to
them." The testing programme was carried out by Wärtsilä in partnership with
Evergas, the seaborne transporter of petrochemical gases and natural gas
liquids.
With this
development, Wärtsilä customers will be able to meet the International Maritime
Organization's (IMO) Tier III regulations on secondary emissions cleaning when
using either liquefied natural gas (LNG) or LEG as fuel.
Wärtsilä's 50DF
marine engine has been successfully tested and certified to use ethane (LEG) as
fuel.
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