• 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.




2020 March 31

17:06 Yang Ming reveals 2019 financial report
16:55 State Duma of Russia approved in first reading expansion of resource base for LNG production projects
16:23 Rolls-Royce supplies innovative propulsion system for new multi-purpose vessels in the North and Baltic Seas
16:18 Nauticor and Novatek cooperate in the development of small-scale LNG supply infrastructure in the Baltic Sea
15:28 Bunker prices continue going down at the Far East ports of Russia (graph)
15:04 ClassNK establishes "Rules for the Survey and Construction of Governmental and Naval Ships"
14:42 NOVATEK declares LNG transshipment in Norway to be a temporary measure caused by Covid-19 pandemic
14:23 Wärtsilä Translink becomes first ever solution fully compliant with latest IEC and DNV GL Cyber Security rules
13:36 Krasnoye Sormovo to build three more ships of RSD59 design
13:09 Hapag-Lloyd revises North Europe – CAF May 1, 2020
12:51 Navigation season opens at Coal Sea Port of Shakhtersk
12:27 Krasnoye Sormovo shipyard completed sea and mooring trials of Pola Yaroslava, dry cargo carrier of Project RSD59
12:09 Verifavia partners with OSM Maritime Group to provide IHM services
11:44 Operations under quarantine arranged by Troitsa Bay Seaport (MPBT)
11:30 Vostochny Port arranged operations under quarantine
11:08 ABS supports U.S. COVID-19 response
10:45 Cruise shipping to be suspended in the port of Kiel until end of April
10:08 COSCO SHIPPING Holdings announces 2019 results
09:46 MABUX: Bunker market this morning, Mar 31
09:33 Baltic Dry Index is down to 548 points
09:16 Brent Crude futures price is up 2.12% to $26.99, Light Sweet Crude – up 5.67% to $21.25
09:08 Sergey Shishkarev headed the Board of Directors of PJSC TransContainer
08:44 Hapag-Lloyd appoints new executive in Asia
08:44 Aker Solutions secures brownfield services contract in Brunei

2020 March 30

18:30 Ecochlor announces collaboration with Horizon Air Freight to expand shipping services
18:15 Inmarsat takes founding role in first Decarbonising Shipping programme for Asian start-ups
18:05 Start of cruise season in Kiel to be postponed until end of April
17:57 Globaltrans’ profit for 2019 climbed 16% YoY to RUB 22.7 billion
17:03 CMA CGM announces PSS from Romania to the Mediterranean
16:35 OOCL announces Transpacific product update
16:20 About 40 small- and mid-size ships to be built for Russia’s Far East by 2025
16:03 ClassNK releases Guidelines for Non-destructive Inspection by Phased Array Ultrasonic Testing
15:45 Gasum to supply Preem with renewable maritime fuel
15:24 Two ferries operate between seaports of Kaliningrad and Ust-Luga
15:03 NuStar extends Svitzer contract in Point Tupper, Canada, by five years
14:58 5G innovation put to a practical use in the Port of Zeebrugge
14:46 Global Ports terminals add new transit intermodal service from Europe to Asia via Russia
14:28 BPO and BTJ prepared overview of measures introduced in ports and shipping lines within Baltic Sea region
14:02 Port Houston posts cargo volume results for Feb 2020
13:51 Average wholesale prices for М-100 HFO fell to RUB 8,177 in RF spot market
13:20 Wärtsilä signs agreement with Kuribayashi Steamship in Japan for deployment of innovative gate rudder technology
13:10 Maersk’s first intercontinental train from Europe to Asia dispatched from St. Petersburg
13:03 Tianjin Port Development announces 2019 unaudited annual results
12:29 United Shipbuilding Corporation establishes center for prevention of Covid-19 spread
12:02 Ports of Bremen fully functioning
11:37 Abu Dhabi, UAE to host ADIPEC 2020 on November 9-12
11:12 MABUX Digest: Top events on global bunker market. Week 13
11:02 First-stage land usage permit issued to APM Terminals Poti
10:50 KN moves its LNG Terminal from its normal location due to cleaning work
10:28 Port of Riga reports no significant changes in cargo handling
10:21 Panama Canal backs efforts to expedite return home of the passengers and crew on Holland America’s Zaandam
10:04 NCSP Group published its consolidated financial results for 12 months 2019
09:41 MABUX: Bunker market this morning, Mar 30
09:26 RF Government limits crossing of state border checkpoints
09:09 Baltic Dry Index is down to 556 points

2020 March 29

16:29 Coast Guard and a salvage towing company rescued three people near Key Largo
14:35 AAM to complete construction of the first hydrogen fuel cell vessel in the U.S.
13:17 Fischer Panda UK introduces standardised FP Control across new models
12:03 USCG responds to grounded container vessel in Mississippi River
11:52 Stena Bulk performs a test running an MR tanker on 100% biofuel