The process
A hot air generator burns fuel and mixes the products or the heat exchanger air with dilution air to feed a dryer. The hot air fan carries the mixed stream to the dryer at the required temperature, and the combustion air blower serves the burner.
The gas
Clean air at elevated temperature from a dryer, oven or cooling duty. The selection is made at the hot density, with the shaft and bearings arranged for continuous hot running.
Fans in this process
| Duty | What it does here | Type usually selected |
|---|---|---|
| Hot Air Fan | Circulates or supplies air at elevated temperature to a dryer, oven or kiln. | Backward curved and backward inclined |
| Combustion Air Blower | Feeds a burner with air at the pressure the burner register needs. | Backward curved and radial tipped |
| FD Fan | Supplies combustion air to a boiler or furnace, pushing ambient air through the air heater and into the windbox against the furnace draft. | Backward curved and backward inclined |
| ID Fan | Sits at the outlet of a boiler, kiln or furnace and draws the flue gas through the plant to the stack. | Backward curved, backward inclined and radial tipped |
| Dilution Air Blower | Injects ambient air into a hot flue gas stream to bring it down to a temperature the downstream bag filter or fan can accept.. | Backward curved |
Industries
Related processes
Rice Husk Fired BoilersOil and Gas Fired BoilersBiomass Fired BoilersThermic Fluid HeatersGypsum Calcining PlantsCeramic Tunnel and Roller KilnsCeramic Body Spray DryersBrick and Refractory KilnsChemical Reactor and Tank VentsMVR EvaporatorsFertilizer Granulation PlantsFertilizer Rotary Dryers and CoolersSulphuric Acid PlantsFood and Dairy Spray DryersRotary DryersFluid Bed Dryers and Coolers