| 摘要 |
Liquid-liquid extraction apparatus includes an extractor unit where a first liquid contacts a second liquid so a component is transferred from the first liquid to the second liquid. The extractor unit has an inlet for the first liquid with the component in it, and an outlet for the first liquid from which the component has been removed. The extractor unit also includes an inlet for a second liquid to which component is transferred from the first, and an outlet for second liquid to which component has been transferred from the first liquid in the extractor unit. A separator having an inlet and a permeate outlet includes a semi-permeable membrane which forms a barrier between the separator inlet and the permeate outlet. The separator inlet is connected to one of the outlets of the extractor unit, and the semi-permeable membrane is permeable to most of the liquid flowing from that outlet. The membrane is substantially impermeable to any other entrained liquid, so only one liquid flows through the membrane and out the permeate outlet substantially free of any other liquid. A reject outlet opening into the separator on the same side of the membrane as the inlet permits removal from the separator liquid not passed by the membrane.
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