| 摘要 |
In a process chamber (12) having a gas inlet (16) and a gas outlet (18) for generating a generally upward-directed gas stream (E), a hollow lance (40) extends transversely to the general gas stream (E) between two pairs of baffles (42, 44). The lance (40) has a profile, which is symmetrical to a vertical centre plane (A), and contains a conveying channel (60) which extends in the longitudinal direction of said lance and to which material discharge nozzles (80) are connected. Above the baffles (42, 44), a pair of half-shells (52) is located which, together with the baffles (42, 44), form a straight trough (53) which is at least approximately symmetrical relative to the centre plane (A). Between the gas inlet (16) and gas outlet (18), a pressure gradient can be established, which creates a straight-line fluidised bed (F) within the trough (53). …<IMAGE>… |
