• 2019 October 22 18:09

    Alfa Laval Aalborg boiler technology offers an easier path to LNG propulsion

    Alfa Laval is not an engine maker, but is nonetheless playing a key role in the move towards LNG propulsion. Alfa Laval technologies and expertise – especially in the area of boilers – are enabling marine vessels to deal with boil-off gas (BOG), which is the critical step in making the shift to LNG. Alfa Laval’s dual-fuel boilers, Gas Combustion Unit (GCU) and services form a complete portfolio of solutions for BOG safety, Alfa Laval said in a media release.

    LNG is on the upswing, due to its role in reducing emissions and its relative economy compared to today’s low-sulphur fuels. “Customers are attracted to LNG propulsion for a variety of reasons, and it’s being considered for many vessel types besides LNG carriers,” says Markus Tauriainen, Manager Exhaust & Combustion System Sales at Alfa Laval.

    In order to use LNG as fuel, vessels must be able to manage boil-off gas (BOG), the evaporated gas that can increase tank pressure. Alfa Laval is well known for BOG management on LNG carriers, where the Alfa Laval Gas Combustion Unit (GCU) safely burns BOG in compliance with the International code for Gas as Cargo (IGC). When it comes to using LNG for propulsion under the International code for Gas as Fuel (IGF), Alfa Laval is also managing BOG with dual-fuel Alfa Laval Aalborg boilers – and is tipping the balance in LNG’s favour for a far larger number of vessels.

    A compact and simple way of managing boil-off gas
    When an LNG fuel tank is incorporated into a vessel, the pressure created by BOG must be kept at a level that avoids ventilation to atmosphere via the safety valve. Reliquefaction of the gas is possible, but doing this on board adds too much complexity and cost for most vessels. Likewise, burning the gas in auxiliary engines or gensets requires pressurization, which demands a redundant expensive compression train.

    “On some vessels you can use a Type C tank to allow pressure to accumulate,” says Tauriainen. “But what most vessels need is a safe solution for burning off the gas at low pressure. That can be a GCU on LNG carriers, but the best and most economical solution for vessels using LNG as fuel is usually a dual-fuel boiler.”

    A boiler, either for producing steam or for heating thermal oil or water, is equipment that vessels need anyway. Since an Aalborg dual-fuel boiler can be fired with LNG, it can take on the additional safety function of BOG management. “Boilers are a compact, simple and highly affordable way to handle boil-off gas,” Tauriainen says. “As strange as it may sound, our Aalborg dual-fuel boilers have been the enabler for LNG propulsion in many, many projects.”

    Smarter preparations for LNG tank inspection
    Aalborg boilers, like the GCU, have yet another advantage when it comes to BOG management. Every fifth year, when a vessel enters dry dock for inspection, the tank environment must be made non-hazardous by replacing the LNG with inert gas. During this process, Aalborg dual-fuel boilers are capable of burning the mixture of inert gas and LNG.

    “Inert gas itself doesn’t burn, so the mixture resulting from the inerting process can’t be fed to an engine or genset,” says Tauriainen. “It can be fed to an Aalborg dual-fuel boiler, however. So the boiler offers a time-saving and economical solution to this recurring issue, which otherwise has to be solved by visiting an onshore disposal terminal before and after dry docking.”

    A century of boiler expertise – and more
    Considering the importance of boiler technology to the overall LNG equation, Alfa Laval’s expertise and resources offer important assurance to ship owners and operators. Alfa Laval has supplied, optimized and supported boilers for 100 years, and has sold over 100 Aalborg dual-fuel boiler systems to date. That experience is paired with BOG know-how from the GCU, plus R&D muscle at the Alfa Laval Test & Training Centre in Aalborg, Denmark, a 1350 m2 facility with a dedicated wing for gas and combustion solutions.

    “Our Aalborg dual-fuel solutions are designed with boil-off gas in mind and are influenced by our experience with the GCU,” says Tauriainen. “The boiler uses LNG efficiently for heating, but by managing the boil-off gas and making LNG propulsion possible, it also enables far greater savings. GCU or boiler, steam or thermal fluid – we have a solution to make LNG propulsion happen, on any size or type of vessel.”

    Full service backing where it matters most
    Since every aspect of BOG management is linked to safety, Alfa Laval’s organizational strengths also come into play. As a full-scope marine supplier, Alfa Laval provides not only in-house engineering and manufacturing, but also peace of mind through commissioning and a well-established global service network.

    “Responsiveness is crucial in safety applications,” says Tauriainen. “We’ve spent decades building up our boiler services, and we can meet vessels at their next port in the vast majority of cases. In an emergency, we also have field service engineers who can be dispatched to sea.”

    In fact, Alfa Laval service expertise is closer than ever, thanks to a growing range of digital services. Alfa Laval BOG solutions all make use of Alfa Laval Touch Control, a next-generation control solution with an easy-to-use touchscreen interface. As well as providing crews with common controls for all BOG-related equipment, Alfa Laval Touch Control offers a platform for data-driven maintenance and optimization.

    “Customers today want immediate solutions for converting to LNG propulsion,” says Tauriainen. “They’ll find them at Alfa Laval. But we’ll also support customers as time goes on, so that they can achieve greater savings and peace of mind over their solution’s lifetime.”

    About Alfa Laval
    Alfa Laval is a leading global provider of specialized products and engineering solutions based on its key technologies of heat transfer, separation and fluid handling. The company’s equipment, systems and services help to heat, cool, separate and transport products in industries that produce food and beverages, chemicals and petrochemicals, pharmaceuticals, starch, sugar and ethanol. Alfa Laval’s products are also used in power plants, aboard ships, oil and gas exploration, in the mechanical engineering industry, in the mining industry and for wastewater treatment, as well as for comfort climate and refrigeration applications. Alfa Laval with a workforce of about 17,000 employees operates worldwide in nearly 100 countries. In 2018, posted annual sales of about SEK 40.7 billion (approx. 4.0 billion Euros). The company has about 17 200 employees.




2019 November 18

18:07 2020 Bulkers extends time charters for Bulk Santiago and Bulk Seoul
17:54 Rosmorport supports 3rd Hydraulic Engineering Structures and Dredging Congress as its General Sponsor
17:35 Columbia Threadneedle Investments and Brittany Ferries reach agreement to acquire Condor Ferries from Macquarie Infrastructure and Real Assets
17:21 Moscow, Saint-Petersburg and Murmansk to host PORA discussion “Development of Water Transport Infrastructure in the Arctic” on Nov'26
17:05 ​Shearwater GeoServices awarded largest-ever 4D campaign in the Asia Pacific region by Woodside
16:35 HYUNDAI Merchant Marine joins “Getting to Zero Coalition”
16:20 Gazprom Neft reports 4.1-pct growth of bunker fuel production to 2.04 million tonnes in 9M’19
16:05 Essar Ports completes work on the Hazira-based Passenger Ferry Terminal
15:41 Epic Gas completes acquisition of 11,000 CBM Epic Sicily
15:37 Gazprom Neft increases net profit by 7% in 9M 2019
15:02 Port of Gdynia prepares to develop acquired land at Węgierskie Quay
14:39 Training for African women working in SAR operations held at Maritime Rescue Coordination Centre in Morocco
14:15 CMA CGM announces FAK rates from Asia to North Europe and Mediterranean
13:36 Container Terminal Saint-Petersburg allocated RUB 10.4 million under its 9M’2019 social and environmental programmes
13:15 MacGregor secures complete piggy-back hatch cover order from Fincantieri Bay Shipbuilding
12:53 Vympel Shipyard delivers Grachonok-class special purpose boat to Federal National Guard Troops Service
12:32 Average wholesale prices for М-100 HFO down to RUB 8,159 in RF spot market
12:09 Kim Heng signs MoU with subsea cable installer for offshore windfarm cable-laying projects in Taiwan
11:51 New national port operator WT Terminal established in the Freeport of Riga
11:09 Stena Line takes delivery of new ferry Stena Estrid
10:54 Series of eighth dry cargo carriers of Project RSD32M completed with delivery of Anatoly Nikolayev
10:33 Bunker sales at the port of Singapore in Jan-Oct’2019 fell by 6.4% Y-o-Y to 38.92 million tonnes
10:19 MABUX: Bunker market this morning, Nov 18
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09:52 DEME and Royal IHC launch TSHD MEUSE RIVER
09:34 Brent Crude futures price is flat at $63.3, Light Sweet Crude – at $57.83
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2019 November 17

16:12 Port of Dover wins ESPO Award 2019
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12:42 PSA Marine and Wartsila join hands to tackle climate emergency
11:38 A.P. Moller-Maersk improves operational profitability
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2019 November 16

16:42 Team Tankers International Ltd. announces Q3 2019 results
15:02 GasLog places NOK 900M of senior unsecured bonds due 2024
14:23 BTG and GoodFuels preparing for major investment in bio-refinery to support shipping’s low carbon fuels demands
13:41 Third L-class delivered in China
12:32 Seaspan to purchase a fleet of six containerships on long-term charter for $380 million
11:28 Mammoet inks agreement with Port of Coeymans Marine Terminal to strengthen presence along East Coast
10:18 Metal Sharks delivers pilot boat duo to BCMT

2019 November 15

18:09 Coast Guard medevacs cruise ship Aida Perla passenger just off Ponce, Puerto Rico
17:48 Sovcomflot reports its results for third quarter and nine months of 2019
17:23 Wärtsilä and PSA Marine collaborate to achieve clean energy shipping
17:15 Bollinger Shipyards contracted to build ocean transport barge
17:00 Composit supports 7th International Forum of Dredging Companies as its Sponsor
16:57 Ulstein unveils its concept of the first hydrogen powered offshore vessel
16:36 RF Government separates positions of Deputy Transport Minister and head of Rosmorrechflot
16:14 IMO holds training on impacts of anti-fouling systems and ships’ biofouling on marine environment
15:39 Norway boosts IMO's GreenVoyage-2050 GHG project
15:11 New Wärtsilä Expertise Centre provides value-adding lifecycle support
14:57 LUKOIL commissions phase three facilities at Filanovsky field
14:30 NSR cargo traffic totaled 26 million tonnes year-to-date, up 63.5% YoY
14:13 Georgia Ports Authority up 3.5 percent to 428,400 TEU in October 2019
13:13 Diana Shipping announces direct continuation of time charter contract for m/v Medusa with Cargill
12:51 Multipurpose Reloading Complex reports 4-fold increase of allocations for environment protection to RUB 11.5 million
12:32 ABI Research: Commercial fleets looking to tech to accelerate ROI in the face of rising costs, competition, and uncertainty
12:13 Port of Oakland names Danny Wan Executive Director
11:28 ESL Shipping participates in Intelligence Hunt
11:00 CMA CGM to apply GRI from Canada West Coast to worldwide destinations (Excluding EU, Russia & USA)