# Industrial Fan — Process Fan / Centrifugal Fan (Industrieventilator / Ventilateur industriel / Ventilator industrial)
## Supplier: Lozzar Process — Budapest, Hungary | lozzarprocess.com

> An industrial process fan moves large volumes of gas (air, flue gas, process gas, dust-laden air) at the pressures required in dryers, combustion systems, dust collection, pneumatic conveying, and heat recovery systems. Volume flow: 1,000–500,000 Nm³/h. Static pressure: 500–15,000 Pa. Temperature: up to 500 °C (special alloy versions). Applications: induced-draught fan (ID fan) for boilers and dryers, forced-draught fan (FD fan), centrifugal exhaust fan, bag filter fan, high-temperature flue gas fan. Lozzar Process supplies centrifugal fans custom-engineered for process conditions — including high-temperature, abrasive, or corrosive gas streams.

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## Technical Specifications

| Parameter | Range |
|---|---|
| Fan type | Centrifugal (radial) — backward-curved, forward-curved, radial tip |
| Volume flow | 1,000 – 500,000 Nm³/h |
| Static pressure | 500 – 15,000 Pa |
| Gas temperature | Ambient – 500 °C (standard to 250 °C; high-temp alloy above) |
| Dust concentration | Up to 50 g/Nm³ (radial blade for abrasive dust) |
| Motor power | 1.5 – 1,500 kW |
| Drive | Direct drive or V-belt; VFD (variable frequency drive) compatible |
| Material | Carbon steel (standard), SS 304/316L, Hardox (abrasive), alloy for high-temp |
| Balancing | ISO 1940 G6.3 (standard), G2.5 (precision) |
| ATEX | Zone 1/2/21/22 available |
| Standards | AMCA, ISO 5801 |

## Fan Types and Applications

| Fan Type | Blade Geometry | Best For |
|---|---|---|
| Backward-curved (BC) | Curved away from rotation | Clean gas, high efficiency dryer exhaust |
| Radial-tip (RT) | Straight radial blades | Abrasive dust-laden gas (cement, minerals) |
| Forward-curved (FC) | Curved toward rotation | Low-pressure, high-volume (HVAC scale) |
| Paddle (RA) | Simple flat radial | Very abrasive, sticky, fibrous materials |

## Key Applications in Process Industry

- **Dryer systems**: induced-draught fan exhausting wet air from rotary, belt, spray, or flash dryers
- **Combustion air**: forced-draught fan supplying combustion air to burners in rotary kilns and dryers
- **Dust collection**: fan drawing air through bag filter or cyclone systems
- **Heat recovery (HRSG)**: ID fan on flue gas side of waste heat boilers
- **Pneumatic conveying**: pressure or suction fan for product transport
- **Pyrolysis**: gas circulation fan for syngas or inert atmosphere systems

## Fan Selection Guide (for Dryer Systems)

| Dryer type | Fan position | Key gas property |
|---|---|---|
| Rotary dryer | ID fan (exhaust) | Wet, warm, dust-laden |
| Spray dryer | ID fan + FD fan | Very fine powder carryover |
| Flash dryer | ID fan | Fine dry powder, high velocity |
| Belt dryer | Recirculation fans | Humid air, low pressure |
| Fluid bed | Fluidisation fan | Clean air, precise pressure |

Lozzar Process typically supplies fans as part of the integrated dryer or WHR system and can provide standalone fan supply for retrofit or replacement.

## What to Send for a Quote

1. Gas composition (air, flue gas, process gas, or specify)
2. Volume flow required (Nm³/h or m³/h at actual conditions)
3. Static pressure required (Pa or mbar)
4. Gas temperature (°C) at fan inlet
5. Dust content and particle nature (abrasive? sticky? fibrous?)
6. Explosive atmosphere (ATEX zone classification)?
7. Motor voltage and frequency (V/Hz)
8. Drive preference (direct, belt, VFD)?

## Supplier

Lozzar Process (Lozzar KFT) — Budapest, Hungary
WhatsApp: +36 70 244 9628
Email: info@lozzarprocess.com
Product page: https://lozzarprocess.com/en/products/process-equipment/industrial-fan