This article's table of contents introduction:
- Core Definition
- Typical Performance Range (Estimate)
- Key Design Features (For Dust Handling)
- Selection Criteria (How to choose the right one)
- Example of a Standard Model
- Important Safety & Operation Notes
It is impossible to give you a single "correct" model number or specification for a 11kW Dust Removal Centrifugal Induced Draft Fan without knowing the specific operating conditions of your system (duct length, static pressure, dust type, etc.).
However, I can provide you with the typical technical parameters, design characteristics, and selection considerations for a fan of this size and application.
Core Definition
- Power: 11 kW (15 HP)
- Application: Dust removal (Dust collection), Induced draft (pulling air through filters or ducts from the negative pressure side).
- Type: Centrifugal (Radial) Fan. Most common for industrial dust due to its high pressure capability and tolerance for particulate matter.
- Voltage: Typically 380-415V / 3-Phase / 50Hz (or 460V/60Hz depending on region).
Typical Performance Range (Estimate)
For a standard 11kW centrifugal dust fan running at 1450-2900 RPM:
| Parameter | Typical Range | Notes |
|---|---|---|
| Air Volume (Flow) | 6,000 – 15,000 m³/h (3,500 – 8,800 CFM) | Lower volume = Higher pressure. |
| Static Pressure | 2,000 – 4,000 Pa (8 – 16 inches w.g.) | Industrial dust systems need high pressure to overcome filter resistance. |
| Impeller Diameter | 500 mm – 710 mm (20" – 28") | Depends on blade design. |
| Rotational Speed | 1450 RPM (Low noise) or 2900 RPM (High pressure) | Direct drive (coupling) or Belt drive. |
Key Design Features (For Dust Handling)
An 11kW Dust Removal fan differs from a standard HVAC fan:
- Heavy-Duty Impeller:
- Usually made of wear-resistant steel (Q235 or 16Mn).
- Blade Type: Backward inclined (high efficiency, non-clogging) or Radial (for heavy dust, sticky materials).
- Note: Forward-curved blades are rare for dust due to clogging.
- Housing (Volute):
- Thick gauge steel (4-6mm).
- Often has a clean-out door or dust drain at the lowest point.
- Shaft Seal: Prevent dust from leaking into the bearing housing.
- Drive Type:
- Belt Drive (Recommended): Allows speed adjustment (changing pulleys) to tune air volume/pressure. Protects the motor if the impeller jams.
- Direct Drive (Coupling): More efficient, but requires precise alignment. Motor RPM is fixed to fan RPM.
- Motor:
- IP55 or IP65 protection (dust-tight).
- F-class insulation.
- High starting torque for overcoming inertia of the dust-laden impeller.
Selection Criteria (How to choose the right one)
To buy a suitable 11kW fan, you must provide the following to the manufacturer:
- Desired Air Volume (m³/h or CFM): How much air needs to be moved?
- Required Static Pressure (Pa or mmH₂O): The resistance of the ductwork, filters, cyclones, and baghouses.
- Dust Type:
- Light dust (wood chips, sawdust): Backward inclined blades.
- Heavy/abrasive dust (sand, metal grinding, cement): Heavier radial blade or paddle wheel design.
- Sticky/stringy dust (textile fibers): Special non-clogging open impeller.
- Operating Temperature: Standard is 20°C-80°C. For hot gases (e.g., oven exhaust), a high-temperature version (with cooling vanes or shaft cooling) is required.
- Mounting: Base frame or cantilever? Inlet/outlet direction (e.g., Left 90°, Right 180°).
Example of a Standard Model
A common Chinese standard model for this application is the 9-19 Series or 9-26 Series high-pressure centrifugal fan.
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Example Model: 9-19 No. 8D (Direct drive) or 9-19 No. 8C (Belt drive).
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Power: 11 kW
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Speed: 2900 RPM
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Flow: ~10,000 m³/h
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Pressure: ~3,000 Pa
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Application: General industrial dust removal, pneumatic conveying.
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Alternative (Lower Pressure, Higher Volume): Y5-47 Series (Induced draft, often for boilers but used in dust).
Important Safety & Operation Notes
- Vibration Monitoring: An 11kW dust fan is powerful. Install it on a concrete foundation or heavy steel frame with vibration dampers.
- Pre-cleaner: If the dust is very heavy, install a cyclone separator before the fan to reduce wear on the impeller.
- Variable Frequency Drive (VFD): To save energy and protect the motor, use a VFD. This allows soft-start and precise flow control.
- Noise: At 2900 RPM, these fans are very loud (85-95 dB). You will likely need a silencer (muffler) on the inlet and outlet.
To get a final quote: Contact a fan manufacturer (e.g., Xinxing, Yilong, or local equivalents). Give them: "11kW 380V 3Ph, I need [X] m³/h at [Y] Pa for [Z dust type]." Without these specs, you can only get a generic unit that may not work.
