Packing tower continuous extraction device
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Packing tower continuous extraction device
- Product Details
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Extraction principle:
The structure of the packed extraction tower is basically the same as the packed tower used for distillation and absorption. Suitable packing is installed inside the tower, with the light phase entering from the bottom and exiting from the top; Heavy phase enters from the top and exits from the bottom.
During the extraction operation, the continuous phase fills the entire tower, and the dispersed phase is dispersed into droplets by the distributor and enters the packing layer for mass transfer in countercurrent contact with the continuous phase. The function of the packing layer is not only to continuously condense and redisperse the droplets to promote surface renewal, but also to reduce axial backmixing. The structure of the packed extraction tower is simple, easy to operate, and suitable for processing corrosive feed liquids. The disadvantage is low mass transfer efficiency. Generally used in situations where there are fewer theoretical levels required (such as 3 extraction theoretical levels). In order to improve mass transfer efficiency, external pulsating energy can be provided to the packed extraction tower to cause liquid pulsation, forming a pulsating packed extraction tower.
Product Introduction
The packing extraction device mainly consists of an extraction tower, a light phase tank, a residual phase tank, a heavy phase tank, an inlet and outlet conveying pump, a flow meter, a control system, etc.
The packed extraction tower mainly consists of an upper clarification section, a packing section, and a lower clarification section. A packed extraction tower is a liquid-liquid two-phase alternating current extraction tower with packing as the main structure inside the tower. During operation, the heavy and light phases enter from the top and bottom of the tower, respectively, and are in countercurrent contact inside the extraction tower. Under the influence of the packing, they disperse and form small droplets, increasing the mass transfer area. After the extraction process is completed, the light and heavy phases flow out from the outlets at the top and bottom of the tower, respectively.
Advantages of extraction tower: large processing capacity and continuous production capability.
Specific technical requirements can be customized according to customer needs, and materials are generally divided into high borosilicate glass, 304 stainless steel, 316L stainless steel, titanium alloy, etc.
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