Inertial / Sand filters
Filsure inertial filter is compact, self-cleaning, and modular designed, to serve the requirement of high-efficiency dust filtering of large volume of air at lower pressure drop. Inertial separation is an excellent pre-filtration system, particularly indicated in applications with high dust levels such as steel mills, cement factories or desert areas with risk of dust storms.
It is completely steel structured product which separates dust by principle of “Inertia”. If an air flow containing the dust particles or other impurities undergo a direction change, the particles are subject to the force of inertia which makes them follow the direction of the original motion.
This filtration system is based on the kinetic energy conservation principle, for the dust particles transported by the upstream flow; with a series of quick direction changes, the fluid flows are directed towards the area where clean air is needed, whereas the particulate, through inertia, continues to flow towards an area of the filter that exhausts the separated dusts.
Evidently the higher the mass of the particles and the speed through which they are transported, the higher the efficiency of an inertial filter. An inertial filter needs, except for sporadic exceptions, an auxiliary fan for the extraction of separate dusts; this fan, must be suitable for the transportation of abrasive dusts. Our product range includes four types of inertial filters.
The filter is formed by one or more assembled modular inertial cells, through which the dusty air undergoes an acceleration and a sudden change of direction.
The dusts highly accelerated, maintain a rectilinear direction, go inside the cell and are conveyed in a collecting duct.
The separated dust is, then, sucked and ejected by secondary fan or “Bleed fan”. The bleed fan is designed to discharge dust directly in atmosphere, without duct on the outlet. The air consumed by bleeding fan ranges from 10% to 12% depending on efficiency modes (At NTP conditions).
Inertial filter efficiency is dependent on the size and specific gravity of the dust particles, as well as the inlet air velocity and bleed air rate. Large variation in inlet temperature also affect collection efficiency.
Some of the key features and benefits of Filvane are:
- High dust handling and filtering efficiency
- Compact and modular design
- Low noise - Noise power level less than 80 dBA at 1 m. distance
- Wide operating velocity range from 2 m/s to 5 m/s
- No recurring spare parts required
- Removable and individually cleanable filtering panel
- Maintenance free for long-term service in most difficult conditions
- Rugged construction for uniform performance.
- Inlet and outlet side face screen (Optional) for additional protection.
Typical specifications
- Working noise power level less than 80 dBA at 1 m. distance
- Initial pressure drop less than 250 Pa (For standard inertial filter)
- Dust removal efficiency greater than 81% (A2 fine dust)
- Dust removal efficiency greater than 92% (A4 fine dust)
- Material of construction: Carbon steel painted, Galvanized steel, Stainless steel
- Customized bleed air orientation
For more details please refer Inertial filter separator catalogue:
