Constant-interface abstraction pool

Abstract

The invention discloses a small constant interfacial area extraction cell for extraction kinetics research. The constant interfacial area extraction cell comprises an upright post, a driving mechanism, an upper positioning plate, a lower positioning plate, an organic phase stirring paddle, an aqueous phase stirring paddle, a liquid bath tray, a central baffle plate, a bottom plate and so on, wherein the upright post is fixed on the bottom plate; the driving mechanism, the upper positioning plate, the lower positioning plate and the liquid bath tray are fixed on the upright post; a liquid bath is fixed on the liquid bath tray; the organic phase stirring paddle and the aqueous phase stirring paddle are arranged inside the liquid bath; the driving mechanism drives the organic phase stirring paddle and the aqueous phase stirring paddle to rotate respectively; the liquid bath provided with a liquid bath cover is cylindrical and is divided into an inner layer and an outer layer; a constant temperature water jacket is arranged between the inner layer and the outer layer; a baffle ring is designed on an interface of two phases in the liquid bath and consists of an interfacial baffle plate and a central baffle plate; the inner wall of the liquid bath is formed by overall mill processing; and the bottom and the interfacial baffle ring of the liquid bath adopt chamfered or circular design. By adoption of the design, the liquid bath is convenient to clean as the inner wall of the liquid bath is provided with no combined gap , and simultaneously dead volume is eliminated, and small constant interfacial area extraction cell is suitable for radioactive experiments.

Description

technical field [0001] The invention belongs to the technical field of separation and relates to liquid solution extraction technology, in particular to a small constant interface extraction device for extraction kinetics research. Background technique [0002] The constant interface extraction technology is to make the two phases that are stirred separately conduct mass transfer on a constant interface, and take samples from the two phases at a certain time interval to analyze the concentration of the extracted substance and obtain kinetic data. It is a method for studying liquid-liquid two-phase mass transfer The classic method, the device used is constant interface extraction pool, also called Lewis pool. In the constant interface extraction tank, a horizontal baffle plate with an annular hole is installed to separate the two phases. The interface of the two phases is located in the annular hole of the baffle ring, and each phase can be stirred separately by a stirring pa...

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Problems solved by technology

This design can further increase the stirring rate, but the internal structure is complicated, and a large volume of feed liquid is required to form a cycle, and the amount of waste liquid caused by washing is also larger, which is not suitable for radioactive experimental operations.

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