Exhaust Gas Boiler for Marine Diesel Engines – Energy Recovery Solution
Product Overview
Our exhaust gas boiler for marine diesel engines captures waste heat from the engine’s exhaust stream and converts it into high‑quality steam or hot water for shipboard use. Designed for container ships, bulk carriers, and offshore support vessels, the unit delivers reliable thermal energy while reducing fuel consumption and emissions. The compact, corrosion‑resistant construction fits within tight engine room spaces and complies with the latest IMO Tier III regulations, making it a turnkey solution for ship owners seeking operational efficiency and environmental compliance.
How It Works – From Exhaust to Steam
The boiler integrates a stainless‑steel heat‑exchange matrix directly into the exhaust pipe. As hot gases exit the diesel engine, they pass over the matrix, transferring thermal energy to the water circuit inside the boiler. A built‑in economizer maximises heat capture, while a venturi‑type suction pump ensures consistent water flow under varying engine loads. The resulting steam is routed to auxiliary systems such as fuel‑oil heaters, galley boilers, or HVAC condensers, eliminating the need for separate fuel‑burning heaters.
Technical Specifications
| Parameter | Typical Range | Unit |
|---|---|---|
| Steam Generation Capacity | 150 – 850 | kg/h |
| Maximum Exhaust Pressure | 2.5 – 5.0 | bar |
| Operating Temperature (Steam) | 150 – 210 | °C |
| Material Construction | AISI 316L SS (exhaust side) / Duplex SS (water side) | – |
| Control Interface | Modbus RTU / NMEA‑2000 compatible | – |
| Warranty | 24 months or 2000 operating hours | – |
Typical Specifications (customizable per order)
Application Scenarios
- Fuel‑oil heating on container vessels – reduces auxiliary fuel burn by up to 12%.
- Hot‑water supply for crew accommodation and galley on cruise ships.
- Steam generation for cargo‑hold heating on refrigerated carriers.
- Pre‑heating of seawater for ballast tank cleaning on offshore support vessels.
Each installation can be tailored to the vessel’s layout, with flexible inlet/outlet connections and optional remote monitoring packages.
Competitive Advantages
• High Recovery Efficiency: Up to 85 % of exhaust heat is converted into usable steam, delivering measurable fuel savings.
• Robust Marine‑Grade Materials: Duplex stainless steel water side resists corrosion in saltwater environments, extending service life.
• Integrated Control Suite: Real‑time monitoring via Modbus or NMEA‑2000 fits seamlessly into existing ship automation systems.
• Regulatory Alignment: Designed to meet IMO MARPOL Annex VI and flag‑state certification requirements without additional retro‑fitting.
• Scalable Design: Modules can be paralleled for vessels with multiple engines or higher steam demand.
FAQ
What is the minimum order quantity (MOQ) for a custom‑size boiler?
We accept orders from a single unit upwards; however, a production run of three or more units is recommended to optimise tooling and lead time.
Can the system be adapted to engines with different exhaust pressure ranges?
Yes. Our engineering team can redesign the heat‑exchange matrix and pressure‑relief components to accommodate exhaust pressures from 1.5 bar up to 6 bar.
What is the typical lead time from order confirmation to shipment?
Standard models ship within 15–30 days. Fully customised configurations require 30–45 days, depending on material selections and control‑system integration.
What warranty and after‑sales support are provided?
All units carry a 24‑month warranty covering material and workmanship. Our global service network offers on‑site commissioning, spare‑part logistics, and 24‑hour technical hotline support.