| 摘要 |
<p>This invention relates to rotary processors and methods for purifying viscous liquid material by liquid-liquid extraction. Material is introduced to extracting apparatus including a rotary processor (10) comprising at least one annular channel (18) on a rotor (12) and enclosed by a housing (16) to form a mixing passage (28). Material is dragged forward by the rotating channel (18) from the passage inlet (34) past a blocking member (42). Solvent introduced to the passage (28), e.g. by spray means (44), is carried downstream with and dispersed in material collected at a passage end wall (38). In one embodiment the blocking member comprises a spreader (42) which spreads material as films (52) on the channel walls (20). In another embodiment, sparging means (72) sparges solvent into a pool (76) of material collected upstream of the blocking member (70). Separation of solvent from material may involve rotary devolatilizing or phase separating processors (100), which may be arranged with the mixing processor for cocurrent or countercurrent, multi-stage series operation. </p> |
