Industrial spray application guide
Marine Exhaust Gas Scrubber Spray Nozzles
Marine scrubber nozzles distribute wash liquid inside an exhaust gas cleaning system (EGCS). They support gas–liquid contact, but certification, monitoring and discharge-water compliance apply to the complete approved system.
Engineering focus
What the spray system must accomplish
Marine service adds saltwater corrosion, vessel motion, space constraints, variable engine load and strict monitoring requirements. Nozzle materials, headers and access must fit the approved EGCS design.
Inputs required before selection
- EGCS type, exhaust flow and operating load range
- Open-loop, closed-loop or hybrid wash liquid chemistry
- Required distribution, pressure and flow control
- Corrosion allowance, inspection access and washwater handling
- Connection, installation space and maintenance access
- Required documentation, test method and acceptance criteria
Comparison
Practical nozzle starting points
| Nozzle approach | Useful starting condition | What to verify |
|---|---|---|
| Full-cone distribution | Tower coverage and packed sections | Verify coverage across load range |
| Hollow-cone/tangential spray | Open-tower contact duties | Review wall wetting and entrainment |
| Large-free-passage design | Recirculated liquid with suspended solids | Check erosion and maintenance access |
Review method
How to move from requirement to a defensible selection
- Define the process envelope. Record normal, minimum, maximum and upset conditions rather than one nominal point.
- Choose the spray function. State whether the job is coverage, impact, atomization, evaporation, gas–liquid contact, washing or cooling.
- Check distribution in the real geometry. Review spacing, overlap, obstructions, wall contact, drainage and access.
- Validate materials and maintenance. Consider corrosion, erosion, solids, filtration, cleaning and replacement intervals.
- Set an acceptance test. Use an observable measure such as coverage, flow, temperature profile, pressure, droplet data or process result.
Related applications
Technical references
These sources define process or system context. Product suitability still requires project-specific engineering review.
- IMO — 2021 Guidelines for Exhaust Gas Cleaning Systems (MEPC.340(77))
- IMO — MARPOL Annex VI SOx and particulate-matter controls
Last technical review: 31 July 2026
RFQ checklist
Send the operating data, not just a nozzle name
Include the application, fluid, flow, pressure, temperature, spray distance, connection, material preference, drawings and acceptance criteria.