| 摘要 |
<p>A mass exchange column (60) for exchanging mass between a first gaseous or liquid stream (24) and a second liquid stream (25), comprising a vertical elongated container (11) divided in at least two longitudinal exchange chambers (75,76) by a preferably vertical dividing wall (85), and a longitudinal passageway (86), arranged in a proximity (15) of the dividing wall (85), preferably at least partially arranged within the dividing wall (85), for conveying the first stream (24) between an outlet port (12) of the first chamber (75) and the inlet port (13) of the second chamber (76), wherein (86) a phase separation means is provided (40) along the passageway, which is adapted to receive the first stream (24) and to separate it into a main liquid or gaseous portion (27) as the first stream (24) and a secondary portion (27') that contains a liquid phase formed by condensation of one part of said stream (24) within said passageway (86), or due to an entrainment by said first stream (24) during the contact with said second stream (25) liquid. In a particular exemplary embodiment, the dividing wall (85) comprises two parallel walls (21,22) and a hollow space (86') defined by the two parallel walls (21,22), and the passageway (86) comprises a portion of this hollow space (86') that is limited by the two parallel walls (21,22). This way, it is not necessary to provide ducts to allow the passage of a stream (24) that has to be consecutively treated in the two chambers (75,76), which reduces installation time and costs of the column (60), and limits possible leakage points. Furthermore, it is possible to feed the liquid portion and/or the gas portion of the first stream (24) separately into the second chamber (76), into convenient sections of the second chamber (76), in order to limit the extension of such contact means as trays or packings that are required for the separation which takes place within the second chamber (76).</p> |
