Heat Exchanger Demineralizer Equipment Analysis and Usage Guide
 

I. Equipment Advantages
Highly Efficient Oxygen Removal Performance
- Utilizes two-stage deoxygenation technology (rotating film section + packed section), with the water's oxygen content reduced to ≤7 μg/L (high pressure) or ≤15 μg/L (low pressure), meeting the requirements of the Ministry of Power.
- Heat transfer efficiency between steam and water is enhanced by over 40% through jet, rotating film, and suspended bubble combinations, with short-term overload capacity reaching 150%.

2. Strong operational stability
- Supports both sliding pressure and constant pressure operation, adapts to water quality fluctuations and frequent load changes, with no vibration and no noise.
- Evaporation rate < 0.1%, with low heat loss and energy consumption reduced by 13% compared to traditional spray deaerators.

3. Adaptability and Safety
Low-temperature feedwater adaptability (down to 15°C), compatible with various boiler systems (thermal power, nuclear power, industrial boilers).
- Equipped with triple safety valves (trip pressure 1.35MPa) and anti-cavitation devices, ensuring overpressure protection.
 

Customization Parameters Requirements
| Parameter Category | Specific Requirements |
|---------------------|-----------------------------------------------------------------------------| 
Core Performance - Operating Pressure Range: 0.02~1.215 MPa (Low to High Pressure)
- Outlet Temperature: 104~186.2°C, to match the boiler saturation temperature
| Output and Capacity | - Rated Output: 5~2200t/h (Design with 20% redundancy based on boiler evaporation capacity)
| Volume: Sufficient for 20-30 minutes of buffer demand (e.g., 240 m³ suitable for a 2200 t/h output) |
Material and Accessories | - Main Material: Q345R carbon steel (high pressure) / 304 stainless steel (corrosive water quality)
|                     | - Mandatory Attachments: Constant Speed Disc Nozzle, Stainless Steel Anti-Turbulence Device, Level Gauge + Balanced Container     |
Special Requirements | - Pressure tracking regulating valve required for sliding pressure operation; anti-erosion pipe required for high installation
 


III. Installation and Maintenance Precautions
Installation Requirements
- Basic Treatment: Ensure level deviation is less than 3mm/m, and reserve thermal expansion displacement for sliding supports.
Welding specifications: The tank joint welds must undergo radiographic inspection, and the flatness of the manhole flange sealing surface should be ≤0.1mm.

2. Initiate Debugging
Prior to the first operation, flush the pipeline to prevent slag from clogging the nozzle; do not start when the water level is below 600mm from the center line.
Steam pressure should be gradually increased (≤0.1MPa/min) to prevent sudden drop in pressure causing steam and water to boil together.

3. Routine Maintenance
- Key Points Inspection: Monthly check for nozzle wear and packing bed scaling in the coalescer, annual cleaning of the liquid-vapor network.
- Safety Monitoring: Regularly check safety valves (every 6 months) and verify water level sensor deviation (within ±10mm).

4. Lay-up Insurance
- For long-term disuse, empty the water tank and fill with nitrogen (pressure 0.03~0.05 MPa) to prevent oxidation of the inner wall.
 


Four, Recommended Product (Jiusheng Power, Lianyungang)
- Model Example: XMC Series Spiral Membrane Oxygen Remover, output range 4~1080t/h, supports customized design.
- Key Parameters: Oxygen content ≤5 μg/L (High-pressure type), exhaust gas volume <0.1%, compatible with sliding pressure operation.
- Price Reference: Prices range from 50,000 to 500,000 yuan, depending on output. For a detailed quote, please inquire.

For further selection support or technical documentation, please visit or refer to the "Thermal Deaerator Installation and Operation Manual."