B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
165/61
B01D 47/02 (2006.01) B01D 47/10 (2006.01) G21C 9/00 (2006.01)
Patent
CA 1292426
ABSTRACT The inventive gas cleansing apparatus comprises a vessel (1) which is partially filled with a liquid bath (32) and which has R gas inlet pipe (12), which leads to a gas dis- tribution means (14) with distribution pipes (18) beneath the surface (34) of the liquid (32). The distribution pipes (18) exhibit inlet orifices (64) for incoming con- taminated gas beneath the liquid surface (34), wherefrom the gas is caused to flow through outlet nozzles, for in- stance venturi nozzles (28), to outlet orifices (31). The outlet orifices (31) are situated at a considerably higher level than the inlet orifices (64). The incoming conta- minated gas will because of its inherent higher pressure press down an inner liquid surface (46) in the distribu- tion means (14), such that one or more of the inlet orifices (64) are exposed and thus the gas can flow out through the corresponding outlet orifices (31) with a pressure drop corresponding to the height difference (h) between the outlet orifices (31) and the inner liquid surface (46). During changes in the pressure of the in- coming gas flow the liquid is able to flow out end in through bottom openings (22), thus the number of operating inlet orifices (64) is automatically adapted to the incoming flow, such that the part flow through each outlet orifice (31) will be substantially constant. This is because that the flow through the outlet orifices (31) mainly is defined by the pressure drop between the inlet orifice (64) and the outlet orifice (31). This pressure drop substantially coincides with the hydrostatic pressure difference (the height h) between the corresponding height levels in the liquid. Since an incoming fluctuating gas flow is divided into a varying amount of part-streams, such part-stream being substantially constant in size, the cleansing efficiency of the venturi nozzles and gas cleansing liquid bath is substantially independent of the size of the total flow. (Fig. 1)
547155
Gustavsson Lennart
Johansson Lars-Erik
Lindau Leif
Flakt Ab
Gowling Lafleur Henderson Llp
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