B - Operations – Transporting – 03 – C
Patent
B - Operations, Transporting
03
C
183/49
B03C 3/14 (2006.01) B01D 46/30 (2006.01) B03C 3/00 (2006.01) B03C 3/145 (2006.01)
Patent
CA 1156157
Abstract In an installation which operates intermittently, a filter bed (30), consisting of granulate material, is located between two gas-permeable walls (31, 32). One (31) of these gas-permeable walls is connected to one pole of a direct current source (33) of high electrical potential, whilst the other wall (32) is connected to earth, via conductors (34, 35). The two gas-permeable walls (31, 32) are located concentrically, so that the filter bed (30) has an annular cross-section. Regen- eration of the filter-bed material is effected with the aid of a central conveying pipe. The filter device is part of a system which consists of a plurality of units, in which system at least one unit is regenerated, at any given time, with the source of direct current switched off, whilst the filter beds of the other units, which are in operation, are undisturbed. Through the combination of the high electrical potential charging of the filter bed, with a filter-bed thickness between 25 and 100 mm, and a grain size bet- ween 0.5 and 2 mm, there results an energy-saving mode of operation, with uniform gas throughput and a high degree of cleaning. The system can be employed wherever dust-laden industrial gases have to be cleaned. (Figure 3).
372626
Fetherstonhaugh & Co.
Gimag Aktiengesellschaft
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