| 摘要 |
<p>A method for gas-liquid mass transfer, comprising the steps of: prearranging a plurality of chambers; defining a path comprising preferably portions preferably vertical within the chambers between a first chamber and a last chamber; creating a gas flow along this path; creating a dispersed liquid stream through each chamber in a prefixed, preferably downwards direction; possibly recirculating the liquid among the chambers. The chambers are organised in a first group, where the liquid and the gas flow co-currently, and in a second group where the two streams flow co-currently. The chambers of the two groups are preferably alternately arranged. An apparatus for carrying out the method, comprising preferably vertical chambers (57, 59, 61, 63) which are run-through by gas (4) and by liquid (3) as above described, and possibly circulating means comprising recycling pumps (51, 52, 53, 54), and distributing piping (86, 87, 88, 89) connected thereto. In an preferred exemplary embodiment, the chambers are defined by external wall and inner parting walls of a container which nay have a square or rectangular cross section. The method and the apparatus are useful for treating very dispersed liquid streams (<500 micron) preventing the liquid from being significantly entrained in the gas stream, and for cleaning gas streams which contain dust particularly fine particulate (<10÷15 micron).</p> |
