The process
Foundries emit fume at the furnace, sand dust at the shakeout and knock-out, and organic vapour from binders in the moulding and core shop. Each goes to its own collector, with adsorption on activated carbon for the vapour and bag filters for the dust.
The gas
Fume from arc, induction or reverberatory furnaces, hot and carrying fine metallic oxide dust. Temperature is handled by dilution air or a cooler ahead of the filter, and the fan sits on the clean side where possible.
Selection for this process
| Carbon | Granular activated carbon bed sized for the solvent load and the required outlet |
| Fan | Spark resistant, on the clean side of the bed |
Types, construction and performance of the adsorption tower.
Industries
Fans in iron and non-ferrous foundries
Fume Exhaust SystemDust Collector FanBag Filter FanVentilation FanRoof ExtractorCombustion Air Blower
Adsorption Tower in other processes
Waste IncineratorsChemical Reactor and Tank VentsSolvent Recovery PlantsAutomotive Paint ShopsRubber and Plastics Compounding
Information needed to select or quote
- Gas volume and temperature. Actual flow at the inlet, normal and upset temperature, moisture.
- Dust or pollutant. Inlet loading, particle size distribution, whether it is abrasive, sticky, hygroscopic or combustible; for gases, the species and concentration.
- Required outlet. The emission limit or clean gas concentration the unit must meet.
- Site. Available space and height, material of construction preferences, and how the collected material is to be discharged.