Industrial‑Grade Chain Grate Stoker Coal Fired Boiler – Reliable Heat for Continuous Processes
As a leading chain grate stoker coal fired boiler supplier, we deliver robust, low‑maintenance units designed for 24/7 operation in power generation, process heating, and district‑heat applications. Our boilers combine proven grate technology with modern control systems to guarantee stable combustion, low emissions, and easy integration into existing plant infrastructure. Engineered for durability and efficiency, each unit can be customized to match the specific load, fuel quality, and duty‑cycle requirements of your operation.
How the Grate System Optimizes Coal Combustion
The chain grate transports coal from the feed hopper through a series of evenly spaced bars that move at a regulated speed. This motion ensures uniform exposure of each coal particle to primary and secondary air streams, promoting complete burnout and reducing unburned carbon loss. The open‑grid design also facilitates ash removal, minimizing manual cleaning and extending service intervals. Integrated flame‑sensing controls modulate air flow in real time, delivering consistent flame stability even with variable coal grades.
Application Scenarios Where Performance Matters
- Continuous steam generation for petrochemical refineries where uptime > 95 % is mandatory.
- District‑heat plants supplying residential and commercial heating networks with seasonal load fluctuations.
- Industrial drying and curing processes that demand rapid heat‑up and precise temperature control.
- Remote power stations where fuel logistics favor coal and on‑site maintenance resources are limited.
Why Choose Our Boilers – Competitive Advantages
- Proven Reliability: Over 15 years of field service in demanding environments with mean time between failures (MTBF) exceeding 8 000 hours.
- Scalable Design: Modular construction allows capacity adjustments from 5 MW up to 50 MW without major redesign.
- Low Operating Cost: Optimized air‑fuel mixing reduces coal consumption by up to 6 % compared with conventional stoker units.
- Compliance‑Ready: Meets EU Ecodesign, EPA 40 CFR Part 60, and China GB 18592 emission standards.
- After‑Sales Support: Dedicated engineering team provides on‑site commissioning, training, and spare‑parts logistics.
Typical Specifications (customizable per order)
| Parameter | Range | Unit |
|---|---|---|
| Thermal Output | 5 – 50 | MW |
| Steam Pressure | 5 – 25 | bar |
| Feed Coal Size | 0 – 50 | mm |
| Grate Speed | 0.5 – 3.0 | m/min |
| Overall Efficiency | ≥ 88 | % (LHV) |
| Emissions (SO₂) | ≤ 200 | mg/Nm³ |
Frequently Asked Questions
What is the minimum order quantity (MOQ) for a custom‑spec boiler?
We accept single‑unit orders for projects ranging from 5 MW to 50 MW. For large‑scale deployments, volume discounts and staggered delivery schedules are available.
Can the grate speed and coal feed size be adjusted to suit low‑grade coal?
Yes. Our control system allows independent setting of grate speed (0.5‑3 m/min) and primary‑air distribution, ensuring stable combustion even with high‑ash, oversized coal particles.
What lead time should I expect after confirming the order?
Typical lead time is 15‑45 days, depending on capacity, customization depth, and current production load. Expedited options are negotiable for urgent projects.
Do you provide warranty and after‑sales service?
All units ship with a 24‑month manufacturer warranty covering material and workmanship. We also offer extended service contracts, remote monitoring, and on‑site spare‑part kits.
Get a Tailored Quote Today
Ready to integrate a high‑efficiency coal‑fired solution into your plant? Contact our sales engineering team for a no‑obligation quotation, detailed performance analysis, and project‑specific recommendations.
sales@industrialboilers.com | +86 21 1234 5678