Thermal Deaerator for Clean Steam Boiler Feedwater System
Product Overview
Our thermal deaerator for clean steam boiler feedwater system is engineered to remove dissolved oxygen and non‑condensable gases from boiler feedwater before it enters the steam generation cycle. By delivering high‑purity water, the unit protects turbine blades, reduces corrosion rates, and extends the life of the entire boiler plant. Designed for continuous operation in petrochemical, power generation, and large‑scale manufacturing facilities, the deaerator integrates seamlessly with existing feedwater treatment loops and can be customized to match specific flow‑rate and pressure requirements.
How It Works
The deaerator employs a two‑stage thermal stripping process. First, feedwater is pre‑heated in a shell‑and‑tube heat exchanger using waste steam, raising the temperature close to its saturation point. This reduces the solubility of gases. In the second stage, the heated water enters a vented spray chamber where it is atomized into fine droplets. The large surface area and continued steam exposure cause dissolved oxygen, carbon dioxide, and nitrogen to be expelled through a dedicated vent line. The deaerated water then collects in a storage tank, ready for distribution to the boiler.
Technical Specifications
| Parameter | Typical Range (customizable per order) |
|---|---|
| Design Capacity | 500 – 5,000 m³/h |
| Operating Pressure | 0.2 – 1.5 MPa (gauge) |
| Inlet Water Temperature | 30 °C – 120 °C |
| Oxygen Removal Efficiency | ≤ 0.5 mg/L (typical) |
| Materials of Construction | Stainless‑steel 304/316, carbon steel with internal anti‑corrosion coating |
| Power Consumption | ≤ 5 kW per 1,000 m³/h |
| Control Interface | PLC‑ready analog/digital I/O, optional HMI panel |
All dimensions, materials, and control options can be tailored to fit your plant layout and integration standards.
Competitive Advantages
- Energy‑Efficient Design: Utilizes waste steam for pre‑heating, reducing auxiliary fuel consumption by up to 12 %.
- Modular Construction: Factory‑fabricated modules can be installed in phases, minimizing plant downtime.
- Robust Materials: 316 L stainless steel in the spray chamber guarantees long‑term resistance to chloride‑induced stress corrosion.
- Integrated Diagnostics: Real‑time oxygen sensor feedback enables automatic vent control and predictive maintenance alerts.
- Global Compliance: Meets ISO 9001, ISO 14001, and ASME‑BPVC Section III requirements; CE marking available on request.
Frequently Asked Questions
What is the minimum order quantity (MOQ) for a customized unit?
We accept orders from a single unit upward. For fully customized designs (materials, control logic, or special certifications) the MOQ is one system, with a modest engineering surcharge.
Can the deaerator be integrated with an existing PLC?
Yes. Standard I/O modules support 4‑20 mA, 0‑10 V, and Modbus‑TCP. We can also provide a ready‑made function block for popular PLC families (Siemens, Allen‑Bradley, Schneider).
What is the typical lead time?
Standard models ship within 15‑30 days after receipt of a purchase order and engineering approval. Fully bespoke configurations require 45‑60 days, depending on material availability.
Do you offer warranty and after‑sales support?
All units carry a 24‑month warranty covering manufacturing defects and workmanship. Our global service network provides on‑site commissioning, training, and spare‑parts logistics.