LNG Solutions

To use liquified natural gas (LNG) for purposes like fuel, power generation, heating and cooking, the LNG must be converted back to its gaseous state. This process is known as regasification, and typically takes place where LNG carriers discharge their cargo.

Wärtsilä Gas Solutions offers a range of regasification technologies for floating storage regasification units (FSRUs), barges, jetties, and onshore terminals. Our portfolio represents an industry benchmark in terms of energy efficiency, robustness, and operational flexibility.

Our track record includes delivery and commissioning of numerous floating LNG regasification plants based on either closed loop regasification technology, using steam with water/glycol as the intermediate heating medium, or open loop regasification technology using sea water with propane as the intermediate heating medium. In FSRU projects, Wärtsilä also offers engineering for the complete conversion – including integration of regasification modules like BOG compressors and power module, along with all the other systems for cargo handling, upgrading and utilities.

Our modularised regasification plants for jetty installations facilitate a much shorter construction time compared to conventional land-based terminals

Reducing VOC emissions primarily benefits our environment and climate
Volatile organic compounds (VOC) are light components of crude oil, which evaporate during loading operations or during the carriage of high-volatility crude oil cargoes. Traditionally this cargo vapour has been vented into the atmosphere to prevent the cargo tank pressure to exceed the design pressure. Such venting represents both an environmental problem and a great loss of energy. In total, the emissions of VOC from global sea transportation account for a total of more than 5 million tonnes per year.

The Wärtsilä VOC recovery system not only prevents these harmful compounds from being emitted to the atmosphere, it also condensates the VOC into two fuel fractions. One is used to power the recovery system itself– making it self-supplied with energy. Today, several shuttle tankers in the North Sea are utilizing this technology to increase the sustainability of their operations.

There is a growing demand for small-scale transportation of LNG to end users that are located in areas where pipelines are not feasible or economically viable. Typically, such end users are power generation plants, land based industries, and suppliers of LNG as fuel for vehicles or ships. Wärtsilä has developed a Cargo Handling System, the design of which is based on the extensive experience that Wärtsilä Gas Solutions has accumulated in delivering such systems for LPG, LEG and LNG carriers. The available scope includes:

• Cargo handling system
• Boil-off gas handling
• Cargo tank design and complete tank delivery
• Ship design
• LNG fuel supply system

We provide designs for small size LNG Carriers carrying LNG only, or Multi Gas Carriers able to carry all types of gas cargo. Typically these ships are between 4 000 and 40 000 m3.