Constant-temperature liquid-liquid equilibrium separation unit

Abstract

The invention discloses a constant-temperature liquid-liquid equilibrium separation unit which comprises a cooling coil, a temperature-measuring element, a temperature control system, feed and discharge pipes and regulating valves and is characterized in that a cover and a bottom are made of stainless steel; a cylindrical shell is made of transparent organic glass; the cover, the cylindrical shell and the bottom are sequentially closely attached to one another; and the cover is fixedly connected with the bottom through a fixing bolt. The constant-temperature liquid-liquid equilibrium separation unit has the positive effects that the stainless steel cover and the bottom are fixed by using a fastener (fixing bolt), thereby clamping the transparent organic glass cylindrical shell in the middle. The separation unit has firm structure and good airtightness, not only has the advantages of convenient observation of the glass transparent split-phase interface, but also has the advantages of firmness and good heat transfer of the stainless steel. The feed and discharge pipes are respectively provided with the regulating valves, the flow rate and mutual proportion of two-way refrigerating medium are regulated by utilizing a computer-aided control temperature regulation system, the random regulation and accurate regulation in a wide range of temperature can be realized, the liquid-liquid equilibrium data are collected and the separation simulation tests of changeable immiscible substances are easily carried out.

Description

technical field [0001] The invention relates to a constant temperature liquid-liquid balance separation device, in particular to a constant temperature liquid-liquid balance separation device for laboratories. Background technique [0002] In the process of heterogeneous liquid-liquid equilibrium constant temperature separation test, glass separator is often used. However, since liquid-liquid equilibrium often requires a longer residence time, especially for two liquids with a small difference in separation density and a small surface tension, a longer residence time is conducive to a clear separation of the two phases. Therefore, the separation device needs to have a larger separation volume and heat transfer area. The separator made of all glass is very bulky and easily broken, and the glass wall is thick, the heat transfer effect is poor, the temperature control is not accurate, and the structure is complicated and the processing is difficult, so it cannot meet the test ...

AI Technical Summary

Problems solved by technology

However, since liquid-liquid equilibrium often requires a longer residence time, especially for two liquids with a small difference in separation density and a small surface tension, a longer residence time is conducive to a clear separation of the two phases. Therefore, the separation device needs to have a larger separation volume and heat transfer area

The separator made of all glass is very bulky and easily broken, and the glass wall is thick, the heat transfer effect is poor, the temperature control is not accurate, and the structure is complicated, the processing is difficult, and it cannot meet the test requirements of the kilogram scale.

Therefore, it is required to find a structure that can organically combine stainless steel structure and glass structure, which not only has the advantages of convenient observation of glass, but also can take advantage of the characteristics of stainless steel's firmness and good heat transfer. At the same time, the current temperature control method is traditional relay control. The temperature fluctuation range is large, which is not conducive to the equilibrium of the two-phase liquid. It is necessary to further improve the temperature control method to achieve precise temperature control.

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