High-pressure centrifugal blowers for dilute-phase and dense-phase pneumatic conveying of cement, fly ash, grain, sugar, chemicals, and other bulk materials in process industries.
Centrifugal Blower for Pneumatic Conveying — Manufacturer & Supplier
Vayuvents Pvt. Ltd. manufactures and supplies high-pressure centrifugal blowers for pneumatic conveying applications — from small laboratory powder transfer systems to large industrial bulk material transport in cement, food, pharmaceutical, and chemical plants.
Pneumatic conveying uses pressurised or vacuum airflow to transport bulk materials through closed pipelines. In dilute-phase conveying, material is suspended in the airstream and transported at high velocity. The centrifugal blower provides the large volume of high-pressure air needed to maintain the material in suspension and overcome pipeline resistance.
Centrifugal blowers are used for dilute-phase pneumatic conveying where the air-to-material ratio is high and the material is light and free-flowing — such as cement, fly ash, flour, sugar, rice, spices, and pharmaceutical powders. The blower generates the static pressure needed to overcome pipeline friction, bends, and elevation changes.
Vayuvents sizes pneumatic conveying centrifugal blowers based on the material to be conveyed, conveying distance, pipeline layout, and required throughput — providing a matched blower selection for each application.
How It Works in This Application
Material Entry into Conveying Line
Bulk material is introduced into the conveying pipeline through a rotary valve, venturi, or blow tank at a controlled rate matched to the blower air supply.
Air-Material Mixing
The high-velocity airstream from the centrifugal blower picks up and suspends the material particles, forming the dilute-phase air-material mixture.
Transport Through Pipeline
The air-material mixture is transported through the conveying pipeline at velocities above the saltation velocity for the material, preventing settlement in the pipeline.
Separation at Destination
At the destination, the material is separated from the airstream in a cyclone or baghouse separator. The clean air exits through the filter to atmosphere.
Recommended Variants
High-Pressure Centrifugal Blower
Multi-stage or high-pressure single-stage centrifugal blower for long-distance dilute-phase conveying with high pressure requirements.
Single-Stage Centrifugal Blower
Single-stage high-pressure blower for shorter conveying distances and moderate pressure requirements.
SS Construction Blower
Stainless steel construction for food, pharmaceutical, and chemical powder conveying where hygiene is critical.
Roots Blower (Positive Displacement)
Positive displacement rotary lobe blower for dense-phase conveying requiring consistent pressure regardless of flow.
Technical Specifications
| Parameter | Specification |
|---|---|
| Airflow Capacity | 500 to 50,000 m3/hr |
| Static Pressure | 500 to 2,000 mmWG |
| Motor Power | 1.5 to 200 kW |
| Impeller Material | MS / SS304 / SS316 |
| Casing Material | MS / SS304 / SS316 |
| Drive Type | Direct coupled / Belt driven / VFD |
| Standards | IS 4894, IS 6966 |
Key Features
- High-pressure capability overcomes long conveying pipeline resistance and elevation changes
- Robust radial impeller handles occasional material carryover without damage to the blower
- SS304 and SS316 construction options for food, pharmaceutical, and chemical powder conveying
- VFD-compatible for variable throughput control — reduce blower speed during partial load periods
- Anti-vibration mounts and inlet silencer as standard for low-noise operation in process plants
- Works performance test certificate with measured pressure and flow curves
Industries That Use This Application
Cement Plants
Cement powder, raw meal, and fly ash pneumatic transport from silos to mixing and packing
Power Plants
Fly ash pneumatic transport from electrostatic precipitators to storage silos
Food Processing
Flour, sugar, rice, and spice powder transport in food processing and packaging facilities
Pharmaceuticals
Active pharmaceutical ingredient and excipient powder transfer in GMP manufacturing
Chemical Plants
Chemical powder, granule, and catalyst transfer between reactors and storage
Bulk Material Handling
Bulk bags and silos pneumatic transfer in logistics and material handling operations
Sand & Mineral Processing
Fine sand, calcium carbonate, and mineral powder transport in processing plants
Petrochemical
Catalyst powder and chemical granule transport in refinery and petrochemical operations
✓ Supply & Support: Vayuvents manufactures pneumatic conveying centrifugal blowers at our Vasai, Mumbai works. We provide blower sizing based on conveying distance, material type, and throughput requirement. Installation supervision and commissioning available.
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View →Frequently Asked Questions
In dilute-phase pneumatic conveying, material is suspended in the airstream and transported at high velocity (typically 15 to 35 m/s). It requires a high-airflow centrifugal blower with sufficient static pressure to overcome pipeline resistance. The air-to-material ratio is typically 5:1 to 15:1 by weight. Vayuvents supplies centrifugal blowers sized for dilute-phase conveying based on your specific material and pipeline.
The minimum conveying velocity depends on the material being conveyed. Fine light powders like flour and cement can be conveyed at 15 to 18 m/s. Heavier materials like sand and rice require 20 to 30 m/s. Operating below the minimum velocity causes material settlement in the pipeline and blockage. Vayuvents designs blower capacity to maintain safe operating velocity throughout the conveying pipeline.
Centrifugal blowers can convey abrasive materials provided the impeller material is selected for abrasion resistance. For cement, fly ash, and mineral powders, hardened steel impellers are recommended. Vayuvents recommends positive displacement (roots) blowers for highly abrasive materials in dense-phase conveying as they provide better resistance to impeller wear.
Centrifugal blowers are used for dilute-phase conveying (high velocity, low material concentration) and provide large airflow at moderate pressure. Roots blowers provide constant pressure regardless of flow, making them suitable for dense-phase conveying (low velocity, high material concentration). The choice depends on the material and conveying system design.
Yes. Vayuvents supplies SS304 and SS316 centrifugal blowers with food-grade construction for flour, sugar, spice, and other food powder conveying. All internal surfaces are polished and free from crevices that could harbour contamination. Food-grade gaskets and seals are used throughout.
Cement pneumatic conveying in a typical 50m to 100m horizontal pipeline requires blower static pressure of 500 to 1,200 mmWG depending on pipeline diameter and bends. For longer pipelines or vertical lifts, higher pressure is required. Vayuvents calculates the required blower pressure based on your specific conveying system layout.
Contact Vayuvents at enquiry@vayuvents.com or call +91 90961 88703. Share the material to be conveyed, conveying distance and elevation, throughput in tonnes per hour, and pipeline diameter. We will size the correct blower and provide a technical and commercial proposal within 24 hours.