Alfa Laval has secured a landmark order for the world’s first marine boiler system engineered to safely incinerate ammonia emissions, marking a major step forward in maritime decarbonization. The innovative system will be installed aboard a fleet of four ammonia dual-fuel vessels scheduled for delivery between 2027 and 2028.

The boiler system is a key outcome of a joint development project between Alfa Laval and prominent industry players, including engine manufacturer WinGD and South Korea’s HD Hyundai Mipo shipyard. The 45,000-cubic-meter multi-gas carriers, commissioned by global commodities company Trafigura, are designed to transport both LPG and ammonia.

As the shipping industry explores alternative fuels, ammonia has emerged as a strong contender due to its zero-carbon emissions. However, its toxicity and the complex handling of purge and waste gases present serious safety and technical challenges. Alfa Laval’s new boiler system, functioning as an Ammonia Release Mitigation System (ARMS), addresses these concerns by safely incinerating ammonia-related waste gases generated from engines, fuel systems and onboard equipment.

“Our work with alternative fuels shows Alfa Laval is not merely adapting, but actively shaping the future of marine energy,” said Anders Lindmark, business unit president of Heat & Gas Systems at Alfa Laval. “Following innovations with LNG and methanol systems, this boiler system reaffirms our commitment to safety, efficiency and environmental stewardship.”

Andrea Olivi, global head of shipping at Trafigura, praised the collaboration: “This project advances ammonia as a viable marine fuel. Alfa Laval’s ARMS-equipped boiler system overcomes a key barrier to adoption while safeguarding crews and the environment.”

The boiler system’s design offers multiple functions beyond steam generation. It will handle gaseous ammonia and ammonia-nitrogen mixtures from dual-fuel engines and auxiliary systems, reducing the need for separate emission-handling equipment. This approach results in lower costs and significant space savings, optimizing vessel design and enhancing safety.

“By integrating ammonia emission control into the boiler system, we help shipowners streamline operations while improving onboard safety,” said Stig Person, head of R&D for Heat & Gas Systems at Alfa Laval.

HD Hyundai Mipo echoed this sentiment, noting the system’s potential as a model for future ammonia-fueled vessels. “The integrated design sets a new standard for operational efficiency and vessel optimization,” said Dong-jin Lee, head of design at the shipyard.

Alfa Laval began its work on ammonia combustion technology in 2021, conducting internal research and lab-scale tests. Full-scale testing commenced in 2024 at its Test & Training Centre in Aalborg, Denmark. With this order, Alfa Laval cements its position as a leader in marine boiler technology and alternative fuel innovation.