Commercial Coal Fired Hot Water Boiler for District Heating – Reliable Power for Urban Networks
Product Overview
Our commercial coal fired hot water boiler for district heating delivers continuous, high‑temperature steam that is converted to hot water for large‑scale heating distribution. Designed for municipal utilities, industrial parks, and large residential complexes, the unit operates on low‑grade coal while meeting stringent emission limits. The modular construction enables quick on‑site assembly and easy scalability, making it a cost‑effective backbone for any district‑heating network.
Engineered for 24/7 duty cycles, the boiler integrates advanced combustion control, automatic water‑level management, and robust heat‑exchange surfaces to maintain stable outlet temperatures even under fluctuating demand.
Key Benefits & Features
- High thermal efficiency (typically 85‑90 %) reduces fuel consumption and operating cost.
- Low‑NOx and low‑SOx combustion technology complies with the latest European and Asian emission directives.
- Scalable design – units from 5 MW up to 50 MW can be linked in series or parallel to match network size.
- Robust steel water‑tube heat exchanger with corrosion‑resistant cladding for long service life.
- Integrated PLC‑based control system with remote monitoring, alarm management, and API access for SCADA integration.
- Fast start‑up (full load within 30 minutes) and rapid load‑following capability to respond to peak heating periods.
- Optional on‑site ash handling and grinding systems to minimize waste handling costs.
Typical Specifications (customizable per order)
| Parameter | Typical Range | Unit |
|---|---|---|
| Thermal Output | 5 – 50 | MW |
| Design Pressure | 1.0 – 1.6 | MPa |
| Outlet Water Temperature | 80 – 120 | °C |
| Fuel Consumption | 0.45 – 0.55 | kg/kWh (coal) |
| Water‑tube Count | 120 – 480 | pcs |
| Control Interface | PLC + HMI | – |
All values are typical; final parameters are defined during engineering design based on site conditions and client requirements.
Installation & Commissioning Guide
Site Preparation: Ensure a reinforced concrete foundation capable of supporting the boiler’s weight (≈ 4 t per MW). Provide a 150 mm clearance on all sides for maintenance access and future expansion.
Utilities Connection: Connect to the existing coal handling system, high‑pressure feedwater line, and district‑heating return loop. The control cabinet requires a 400 V three‑phase supply with a dedicated earth ground.
Start‑up Sequence: After mechanical alignment, the boiler undergoes hydro‑static testing, followed by a dry‑run to verify combustion dynamics. Full‑load operation is achieved after the automatic water‑level and temperature regulation loops are calibrated. Typical commissioning time: 3‑5 working days.
Industry Certifications & Safety
The boiler conforms to EN 12952 (Water‑tube boilers), ISO 9001 (Quality Management), and complies with the latest EU Ecodesign requirements for emissions. All safety devices—pressure relief valves, flame‑failure protection, and low‑water cut‑off—meet CE marking directives. Documentation includes a complete CE Declaration of Conformity and a factory‑tested performance report.
Frequently Asked Questions
What is the minimum order quantity (MOQ) for a commercial coal fired hot water boiler for district heating?
Our standard MOQ is one fully configured unit. For projects requiring multiple units, we offer volume discounts and coordinated delivery schedules.
Can the boiler be customized for specific fuel qualities or emission limits?
Yes. Our engineering team can adjust burner geometry, flue‑gas recirculation, and ash‑handling systems to meet local coal grades and stricter NOx/SOx thresholds without affecting overall efficiency.
What is the typical lead time from order to delivery?
Standard production lead time ranges from 15 to 45 days, depending on capacity selection and optional accessories. Rush orders can be accommodated with a surcharge and confirmed availability.
What warranty and after‑sales support are provided?
All units carry a 24‑month comprehensive warranty covering parts and labor. Our global service network offers on‑site spare‑parts kits, remote diagnostics, and scheduled maintenance contracts.