Vibrating screen plate tower for continuous production of liquid-liquid-liquid three-phase extraction

Abstract

The invention relates to a vibrating screen plate tower for continuous production of liquid-liquid-liquid three-phase extraction. A cylindrical tower body comprises a light-phase clarification outer tank connected to the upper part of the cylindrical tower body and a tower bottom clarification tank connected to the lower part; a spindle leads to the lower part of the cylindrical tower body from the exterior of the light-phase clarification outer tank; the upper part and the lower part of the cylindrical tower body are provided with a conical liquid baffle and a light-phase distributor which are arranged on the spindle respectively; a middle screen plate is arranged in the middle of the spindle; a heavy-phase guide cylinder is arranged inside the light-phase clarification outer tank; a heavy-phase mixing chamber is arranged inside the heavy-phase guide cylinder; a bottom liquid outlet of the heavy-phase guide cylinder is positioned at the conical liquid baffle; a polymer phase distributor and an aqueous phase distributor are arranged on a polymer phase conduit and an aqueous phase conduit in the heavy-phase mixing chamber; a tower top screen plate is fixedly arranged on the spindle in the heavy-phase mixing chamber; a sealing ring is arranged between the spindle and the heavy-phase mixing chamber; and two layers of deflection baffles which are arranged in a staggered mode are fixedly arranged on the spindle in the tower bottom clarification tank. The vibrating screen plate tower has high mass transfer efficiency and high controllability.

Description

technical field [0001] The invention is a liquid-liquid-liquid three-phase continuous extraction equipment, which involves the mass transfer process between three liquid phases (light phase, intermediate phase and heavy phase) of different densities, and is especially suitable for extraction from multi-component complex systems A vibrating sieve plate column for continuous production of liquid-liquid-liquid three-phase extraction that can realize one-step separation of multiple target components. Background technique [0002] In the field of separation science, solvent extraction technology, as a traditional mass transfer separation technology, has been widely used in petrochemical, biopharmaceutical, metallurgical and environmental protection fields due to its advantages of high separation efficiency, simple operation and easy scale-up. In the traditional organic-aqueous two-phase extraction system, the difference in the solubility of the solute in the organic solvent and w...

AI Technical Summary

Problems solved by technology

For some extraction systems, the traditional organic solvent-water two-phase extraction system will emulsify or form a third phase, which is extremely unfavorable to the extraction process

Due to the limitation of the main phase of the aqueous two-phase extraction system, the distribution coefficient of the solute is generally smaller than that of the organic-water two-phase system, and the separation coefficient of the multi-component solute is not high, which greatly limits its large-scale application.

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