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AssigneeNiro-Aeromatic AG
InventorsJurg Ris, Hugo Eglin, Mikael Bonde, Urs Frey, Francois Bubendorf
Estimating the term…
The wet cleaning of filter cartridges (4) in fluidised-bed apparatuses and similar process units, without their being dismantled, is carried out by means of cleaning fluid sprayed out of nozzle orifices (10) arranged in the form of a ring, the nozzle orifices (10) being installed in the filtered exhaust-gas space (7) and the filter cartridge (4) being moved through this ring of nozzle orifices (10) by a lifting device (17). In a preceding flushing cycle, the filter cartridge (4) is filled with cleaning fluid and is then subjected to an ultrasonic transmitter (26) and with pressure pulses. The nozzle orifices (10) are designed and arranged in such a way that the issuing cleaning jets strike the filter casing (5) tangentially at an angle of inclination .alpha. and thus set the filter cartridge (4) in rotation. The best possible cleaning effect is achieved by the rotation and lift of the filter cartridge (4).
Appliance for wet cleaning adhering particles from filter cartridges (4) in process units of the type including fluidised-bed apparatuses, spray driers, moving-bed installations and combinations of such units, by treatment with cleaning fluid which is introduced by a ring of nozzle orifices (10) within the process unit and matched to the cross-sectional geometry of the filter cartridges (4) and fed via a delivery, comprising adjusting members for controlling all material streams, characterized in that the nozzle orifices (10) positioned in the form of a ring are directed towards a filter casing (5) at an angle of inclination .alpha. and are arranged in an exhaust-gas space (7), which a sealing point (6) seals off hermetically from a head of a reaction space (3), and a lifting device (17) for executing up-and-down movement of the filter cartridge (4) and an actuable filter-cartridge bottom outlet (18), said filter cartridge (4) being suspended on a linkage (19) of the lifting device (17).
Appliance for wet cleaning adhering particles from filter cartridges (4) in process units of the type including fluidised-bed apparatuses, spray driers, moving-bed installations and combinations of such units, by treatment with cleaning fluid which is introduced by a ring of nozzle orifices (10) within the process unit and matched to the cross-sectional geometry of the filter cartridges (4) and fed via a delivery, comprising adjusting members for controlling all material streams, characterized in that the nozzle orifices (10) positioned in the form of a ring are directed centrally towards a filter casing (5) and are arranged in an exhaust-gas space (7), which is sealed off hermetically from a head of a reaction space (3) by a sealing point (6), a lifting device (17) for executing up-and-down movement of the filter cartridge (4) and an actuable filter-cartridge bottom outlet (18), said filter cartridge (4) being suspended on a linkage (19) of the lifting device (17).
Dependencies are inferred from the claim text.