Rotary Air Preheater for Coal Boiler Factory – Boost Efficiency & Reduce Emissions
In large‑scale power generation, maintaining optimal flue‑gas temperature is critical for both fuel efficiency and environmental compliance. Our rotary air preheater for coal boiler factory applications recovers waste heat from exhaust gases and transfers it to the combustion air, raising inlet temperature by up to 150 °C. This single piece of equipment delivers a reliable, low‑maintenance solution that integrates seamlessly into existing boiler trains, helping plant operators meet strict emission targets while cutting coal consumption.
Why Choose Our Rotary Air Preheater?
- High Thermal Efficiency: Up to 85 % heat recovery under continuous duty, translating into 5‑10 % coal savings per operating cycle.
- Robust Construction: Heavy‑duty steel housing with corrosion‑resistant alloy plates designed for abrasive flue‑gas environments.
- Extended Service Life: Designed for 20,000 h continuous operation with minimal wear; routine inspection intervals can exceed 12 months.
- Flexibility: Modular design supports capacities from 50 MW to 800 MW, with customizable inlet/outlet dimensions to match plant layout.
- Compliance: Meets ISO 9001 quality management, CE marking, and relevant ASME pressure‑vessel standards.
Where It Works Best
The rotary air preheater is ideally suited for coal‑fired utility boilers, industrial cogeneration units, and large‑capacity heat‑recovery steam generators. Its ability to handle high‑temperature, high‑velocity flue gases makes it a perfect fit for:
- Base‑load power stations (300 MW +)
- Steel‑mill boiler plants
- Cement kiln pre‑heat systems
- Marine and offshore power modules
Installation can be carried out during scheduled shutdowns, and the unit’s compact footprint minimizes civil‑work modifications. Engineers appreciate the straightforward integration with existing control and safety systems, while maintenance crews benefit from the accessible bearing housings and detachable sealing plates.
Typical Specifications (customizable per order)
| Parameter | Range | Units |
|---|---|---|
| Rated Capacity | 50 – 800 | MW (thermal) |
| Inlet Air Temperature Rise | 120 – 150 | °C |
| Operating Pressure | 0.1 – 2.5 | MPa |
| Rotational Speed | 0.5 – 3.0 | r/min |
| Material of Heat‑Transfer Plates | Alloy 600 / 690 | – |
| Design Life | >20,000 | hours |
*All parameters are adjustable based on project‑specific thermal‑load calculations and site conditions.
Frequently Asked Questions
What is the minimum order quantity (MOQ) for a custom rotary air preheater?
We accept single‑unit orders for projects of any scale. For large‑capacity units (≥500 MW), a typical MOQ of two units helps optimize manufacturing tooling, but we can accommodate a single‑unit delivery upon request.
Can the preheater be adapted to existing boiler geometry?
Yes. Our engineering team performs a detailed 3‑D layout review and provides custom inlet/outlet flange dimensions, mounting brackets, and clear‑space allowances to ensure a seamless fit within your current plant footprint.
What is the typical lead time from order confirmation to shipment?
Standard production cycles range from 15 to 45 days, depending on the selected capacity and any special material specifications. Expedited options are available with a modest surcharge.
Does the unit include a warranty and after‑sales support?
All rotary air preheaters ship with a 12‑month comprehensive warranty covering material and workmanship. We also provide on‑site commissioning, operator training, and a network of authorized service partners for long‑term maintenance.
Ready to Enhance Your Boiler Efficiency?
Contact our technical sales team today to discuss your specific load profile, receive a free heat‑balance analysis, and obtain a tailored quotation for a rotary air preheater for coal boiler factory installations.
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