A method for adjusting the interface of a liquid-liquid phase separation device and a phase separation device

Abstract

The invention provides a method for adjusting an interface of a liquid-liquid phase-splitting device and a phase-splitting device. A partition plate, a hanging basket, a pull rod and a spring hose are additionally arranged between a heavy phase overflow groove and a heavy phase outlet of the liquid-liquid phase-splitting device, the heavy phase overflow groove and the hanging basket are separated on the two sides of the partition plate, the bottom of the hanging basket is provided with an outlet, the outlet is communicated with the heavy phase outlet through the spring hose and used for discharging a heavy phase, and the pull rod is used for controlling and adjusting the height of the hanging basket. The position of the interface can be adjusted by adjusting the height of the hanging basket, and operation is convenient, easy and stable.

Description

technical field [0001] The invention relates to the technical field of liquid-liquid two-phase continuous separation in the chemical process, in particular to a method for adjusting the interface of a liquid-liquid phase separation device and a phase separation device. Background technique [0002] At present, the equipment used for the continuous separation of liquid and liquid is mainly a simple phase separation tank. The mixed material liquid enters continuously from the side wall of the phase separation tank. The size of the phase separation tank depends on the feed flow rate of the mixed material liquid and the phase separation rate The speed depends on the speed. The volume of the phase separation tank is larger for the phase separation time to ensure sufficient separation time. The upper part of the phase separation tank is the light phase outlet, and the light phase with lower density during phase separation is from the light phase outlet. Continuous separation, the ...

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Problems solved by technology

[0005] If the position of the interface is controlled by controlling the valve opening of the heavy phase outlet through the automatic control instrument to adjust the outflow of the heavy phase, firstly, a remote transmission instrument for detecting the position of the decomposition surface is required, and an automatic control valve linked with the detection instrument is required. The density difference between light and heavy phases is different. The interface detection instrument usually calculates the position of the interface by the pressure difference between the upper and lower. The equipment and operating costs of testing instruments and automatic control valves are high, and there are maintenance costs at the same time. Once there is a problem with the testing instruments or automatic control valves, it will directly affect production

[0006] If the position of the interface is controlled by setting a U-bend on the heavy-phase outlet pipeline, the resistance of the U-bend and subsequent pipelines and the resistance of the pipeline outlet must be considered. There is usually a large error between the theoretical value and the actual value, which cannot be more ideal Maintain the position of the interface; if it is necessary to replace the material system or adjust the position of the interface, the U-shaped bend outside the phase separation tank needs to be changed again, which usually requires on-site fire, which is more dangerous

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