Hydrodynamic cavitation assisted liquid-liquid extraction device and extraction method

Abstract

The invention relates to a hydrodynamic cavitation assisted liquid-liquid extraction device and an extraction method. Comprising the steps that a valve I is connected to an inlet pipeline of a horizontal storage tank I, a valve II is connected to an inlet pipeline of a horizontal storage tank II, and the horizontal storage tank I and the horizontal storage tank II are connected with an outlet of an extraction tank through pipelines; a liquid suction pipe head I and a liquid suction pipe head II are arranged in the extraction tank; the tail end of the pipeline connected with the pipette head I and the tail end of the pipeline connected with the pipette head II are connected and then jointly connected into a pressure pump, an outlet of the pressure pump is connected with an inlet end of a hydrodynamic cavitation device, and an outlet end of the hydrodynamic cavitation device is connected with an inlet of an extraction tank through a pipeline. By means of the intense turbulence effect and high-speed micro jet flow caused in the hydrodynamic cavitation process, enhanced mixing of a water phase and an oil phase in the extraction process is achieved on the microscopic level, multiple times of circulation treatment can be achieved, then the extraction process is enhanced, and the extraction efficiency is improved. The device is high in extraction efficiency, wide in application range, simple in structure, convenient to operate and time-saving.

Description

technical field [0001] The invention belongs to the application field of hydraulic cavitation and extraction, in particular to a device and method for realizing auxiliary liquid-liquid extraction and improving extraction efficiency based on a hydraulic cavitation process. Background technique [0002] Extraction is a unit operation that separates a mixture by utilizing the different solubilities of the components in the system in the solvent. According to the principle of similar compatibility, there are two ways of extraction: liquid-liquid extraction and solid-liquid extraction, the more common is liquid-liquid extraction (also known as solvent extraction or extraction). Liquid-liquid extraction is the process of separating and extracting components in a liquid mixture with a solvent. In the liquid mixture, the solvent must be immiscible with the extracted mixture liquid, and have selective dissolving ability, and must have good thermal stability and chemical stability, a...

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Problems solved by technology

Liquid-liquid extraction generally adopts the method of mixing, stirring, standing and stratifying, and the extraction equipment such as separatory funnel, extraction column, extraction tank, etc. all need to be stirred, especially in the extraction process of the water phase and the oil phase, the existing The way of adding raw materials and extractant is to directly input the extraction equipment. Due to the rapid delamination of the extractant and raw materials, it is difficult to mix the extractant and raw materials directly into the extraction equipment, resulting in low extraction efficiency.

In addition, the general liquid-liquid extraction process has disadvantages such as time-consuming operation, large consumption of organic solvents, unfriendly to the environment, difficulty in extracting highly water-soluble components from water, and prone to emulsification.

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