B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
183/89
B01D 46/04 (2006.01) B01D 46/00 (2006.01) B01D 46/24 (2006.01) B01D 46/48 (2006.01) B01D 50/00 (2006.01)
Patent
CA 1329784
ABSTRACT Apparatus for the removal of asbestos or other matter from a gas stream in a conduit is disclosed. The apparatus includes at least two filter units installed in parallel to receive and filter the gas stream from the conduit, outlets for solid matter at the bottom of each filter unit, and first and second valves respectively on either side of each filter unit for isolating each filter unit for cleaning by compressed air jets when desired. Preferably, the apparatus includes a displacement chamber upstream of the filter units, with much of the asbestos being removed from the bottom thereof. The outlets at the bottom of each filter unit and the collecting and discharge area at the bottom of the displacement chamber are sealed from the surrounding environment, and the filtered solid matter is discharged into bags via at least one bagging unit sealed to the outlets and the discharge area. Preferably, third valves are provided at the solid matter outlet of each filter unit, and these outlets are connected back to the displacement chamber via a return conduit. Fourth valves from the filter unit are connected to a higher pressure gas source, such as the atmosphere in a vacuum system, so that the solid matter may be routed back to the displacement chamber by closing the first and second valves and opening the third and fourth valves.
587446
Armstrong R. Craig
Future Air Technologies Inc.
LandOfFree
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