zeroBOG™: Compact BOG Recondensation for Efficient LNG Shipping

Introduction

Efficient management of boil-off gas (BOG) is a critical challenge for the LNG shipping industry. As global demand for liquefied natural gas rises and environmental regulations tighten, operators need solutions that are both space-saving and operationally reliable. Sulzer’s zeroBOG™ technology delivers a breakthrough in BOG recondensation offering unmatched compactness, efficiency, and flexibility for LNG carriers and terminals.

The Challenge: BOG in LNG Shipping

During the transport and storage of LNG, a portion of the cargo naturally evaporates, creating boil-off gas. If not properly managed, BOG can lead to:

• Loss of valuable product

• Increased emissions

• Safety and operational challenges

• Higher costs for compliance and maintenance

  
  

Traditional BOG recondensers are often bulky and complex, making them less suitable for modern LNG vessels where space, weight, and efficiency are at a premium.

The zeroBOG™ Solution: Compact and Modular by Design

zeroBOG™ is Sulzer’s advanced BOG recondensation technology, specifically engineered for the unique demands of LNG shipping and offshore applications. Its main features include:

• Ultra-compact footprint: Typically five times smaller than conventional BOG recondensers, freeing up valuable space on board.

• Modular construction: Enables fast, seamless installation on both new ships and retrofits, minimizing downtime and project complexity.

• Operational flexibility: Maintains high stability and efficiency even with fluctuating BOG flow rates and challenging offshore conditions.

  
  

Key Benefits for LNG Shipping

• Reduced investment costs: Smaller size and modularity lower both capital and installation expenses.

• Fast commissioning: Pre-assembled modules allow for quick integration into existing or new LNG infrastructure.

• Ease of operation: A self-regulating system and simplified controls make zeroBOG™ easy to operate and maintain, even for crews with limited LNG experience.

• Guaranteed performance: Delivers complete and reliable BOG recondensation, ensuring product integrity and compliance with environmental standards.

  
  

Real-World Impact

zeroBOG™ is already proven in demanding applications such as floating storage and regasification units (FSRU), LNG-fueled ships, and onshore terminals. Its compact design and robust performance help operators:

• Maximize cargo value by minimizing BOG losses

• Meet strict emission and safety regulations

• Future-proof their fleets for evolving industry standards

  
  

Conclusion

Sulzer’s zeroBOG™ technology is redefining what’s possible in LNG shipping. By combining compactness, efficiency, and operational simplicity, zeroBOG™ empowers operators to achieve more with less delivering reliable BOG management for a cleaner, more profitable LNG future.

Ready to optimize your LNG operations? Contact Sulzer Chemtech to discover how zeroBOG™ can transform your fleet or terminal.