Filter cartridges were used instead of sleeves to reduce the filter size in the system’s design. The cartridges were suitably sized for an under 1 m/min filtration speed. In the presence of potentially explosive dust, the filter has been sized with the following parameters:
Kst: 247 bar*m/s
Pmax: 8 bar
The protection systems compliant with ATEX regulations are:
- To stop the pressure wave and the flame, a D.450 isolation flap valve compliant with EN16447 and EN15089 was installed on the suction pipe.
- A vent membrane, positioned on the filter’s roof, compliant with EN14491 dust explosion venting protection system and EN14797 explosion venting devices
- A flame-proof rotary cell compliant with EN15089 on the filter discharge.
The system’s total capacity is 15,000 m3/h, guaranteed by a fan with a 30 kW ATEX zone 22 motor managed by an electrical panel with a modulating inverter.
