Desiccant Dehumidification Expander Equipment Explanation & User Guide

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I. Equipment Advantages
Pressure Regulation and Heat Recovery
- By expanding and decompressing, the steam and liquid water in the de-superheating process are separated. The steam can be recycled in a heat exchanger or deaerator, while the liquid water is regularly sent to the boiler feedwater system, reducing heat energy waste.
Effectively prevents overpressure issues caused by direct high-pressure steam entering the condenser; some models are equipped with a temperature-reducing device, which also synchronously lowers the temperature.

2. Structural Reliability and Adaptability
- Modular housing design (horizontal/vertical) supports combination installation with fixed and movable supports, accommodating thermal expansion stress.
- Handles various pressure steam traps (input pressure ≤ 6.0 MPa), compatible with different operating conditions.

3. Ease of maintenance
Equipped with manhole, handhole, and cooling water pipe connection, facilitating internal corrosion inspection and component cleaning.

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Custom Parameter Requirements
| Parameter Category | Specific Requirements |
|---------------------|-----------------------------------------------------------------------------| 
| Core Performance | - Design Pressure: 0.275 MPa (reference value, adjust according to the input condensate pressure)
|                     | - Working Temperature: ≤400°C, to match the temperature of the pipeline medium                               |
| Structural Configuration | - Material: Q345R Carbon Steel (standard) / 304 Stainless Steel (for corrosive medium environment) |
Interface Standard: Flange connection from DN25 to DN200, compatible with drain pipe diameters
| Safety Accessories | - Mandatory: Safety valve (set at 1.35 times the working pressure), pressure gauge, level gauge |
Special Requirements | - If temperature reduction is required, install a spray pipe and nozzle; the cooling water flow is designed based on 20% of the drainage volume.

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Section 3: Installation and Maintenance Precautions
Installation Standards
- Basic Treatment: Ensure saddle installation level deviation is less than <3mm/m, and reserve thermal expansion displacement for movable supports (calculated at 0.2mm/℃).
Welding Requirements: Shell joint welds must undergo radiographic inspection, and the flatness of the manhole flange sealing surface should be ≤0.1mm.

2. Initiate Debugging
Prior to operation, flush the drainage pipelines to prevent slag from blocking the joints; the safety valve must be independently inspected and sealed with a lead seal.
- During the first run, slowly open the drain valve and monitor the pressure gauge fluctuations (pressure rise rate ≤ 0.05 MPa/min).

3. Routine Maintenance
   - Regular Inspections: Conduct quarterly checks for internal corrosion (with a focus on welds and steam separator), and clean scale deposits.
  - Attachment Management: Inspect safety valves and pressure gauges every 6 months, and replace worn-out sealing pads.

4. Stoppage Insurance
- For long-term disuse, the internal stored water must be drained and nitrogen gas (pressure: 0.03~0.05 MPa) must be filled to protect against oxidation.

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Section 4: Recommended Products
The demister exander produced by Lianyungang Jiu Sheng Power has the following features:
- Model Example: SXK series, supports horizontal/vertical customization, input pressure ≤ 6.0 MPa.
- Key Parameters: Design life ≥ 10 years, compatible with temperature-reducing spray system, exhaust gas efficiency ≥ 95%.
- Service Support: Offer technical solution design, installation guidance, and after-sales maintenance; for details, please inquire.

For further selection or to obtain technical documentation, refer to the "Safety Supervision Regulations for Pressure Vessel Technology" and the installation manual provided by the manufacturer.