Marine Boiler Feed Water Hydrazine Dosing System
Where It Matters Most: Typical Applications
Marine vessels that rely on high‑pressure steam for propulsion, auxiliary power, or process heat demand rigorous control of boiler water chemistry. The dosing system is installed on tankers, container ships, cruise liners, and offshore support vessels to maintain a protective hydrazine level in the feed water loop. By preventing oxygen‑induced corrosion, it extends tube life, reduces maintenance downtime, and safeguards expensive turbine blades. The solution also integrates with existing PLC or DCS platforms, making it suitable for new builds and retro‑fits alike.
Product Overview
Our marine boiler feed water hydrazine dosing system delivers precise, continuous injection of hydrazine into the boiler feed line. The unit combines a corrosion‑resistant dosing pump, a high‑accuracy flow meter, and an electronic controller with built‑in safety interlocks. Designed for the harsh marine environment, the housing is fabricated from 316L stainless steel with marine‑grade seals, and all electronic components meet IP66 protection. The system operates from 24 V DC or 110‑220 V AC, allowing flexible integration with shipboard power schemes.
How It Works – From Reservoir to Boiler
1. Reservoir Monitoring: A level sensor continuously checks the hydrazine tank. When the level falls below the set point, the controller activates the pump.
2. Metered Injection: The pump drives hydrazine through a stainless‑steel diaphragm meter. The flow meter provides real‑time feedback, enabling the controller to adjust pulse width and maintain the target dosage (typically 0.5–2 mg L⁻¹).
3. Safety Interlocks: If the feed water temperature exceeds 120 °C, if a leak is detected, or if the pump current spikes, the system automatically shuts down and triggers an alarm on the ship’s HMIs.
4. Data Logging: All dosing events are stored locally and can be exported via Modbus/TCP for compliance reporting and trend analysis.
Typical Specifications (customizable per order)
| Parameter | Typical Range | Units |
|---|---|---|
| Dosing Capacity | 0.5 – 5.0 | L h⁻¹ |
| Target Hydrazine Concentration | 0.5 – 2.0 | mg L⁻¹ |
| Operating Temperature | -20 – 120 | °C |
| Materials | 316L SS, PTFE seals | ‑ |
| Power Supply | 24 V DC / 110‑220 V AC | ‑ |
| Control Interface | Modbus TCP, 4‑20 mA analog | ‑ |
| Dimensions (L×W×H) | 350 × 300 × 250 | mm |
| Weight | 45 – 70 | kg |
All parameters can be fine‑tuned to match ship‑specific design data, and optional modules (e.g., wireless telemetry) are available on request.
Frequently Asked Questions
What is the minimum order quantity (MOQ) for a custom‑engineered unit?
We accept single‑unit orders for prototype or first‑article testing. For full‑scale production runs, the typical MOQ is 5 units, which allows us to optimize material procurement and tooling.
Can the system be integrated with existing ship control networks?
Yes. The controller supports Modbus TCP, Modbus RTU, and 4‑20 mA analog outputs, enabling seamless connection to PLCs, DCS, or remote monitoring platforms already installed on board.
What certifications does the dosing system meet?
The hardware complies with IEC 60945 (maritime navigation and communication equipment), ISO 9001:2015 quality management, and ABS/CCS classification rules for auxiliary equipment. All electrical components are UL‑listed.
What warranty and after‑sales support are provided?
We offer a 24‑month limited warranty covering manufacturing defects and a 7‑day on‑site replacement service for critical components. Technical support is available 24 × 7 via phone, email, or remote desktop session.
Ready to Secure Your Boiler Assets?
If you need a reliable, compliant, and easy‑to‑maintain solution for corrosion control, contact our engineering team today. We will provide a detailed quotation, discuss optional features, and arrange a virtual demonstration of the marine boiler feed water hydrazine dosing system in action.
Email sales@yourcompany.com or call +1‑800‑555‑0123 to start the conversation.