Rotary ultrasonic-microwave combined microfluid extraction equipment

Abstract

The invention discloses rotary ultrasonic-microwave combined microfluid extraction equipment. The equipment comprises a water-phase feeding micropipe, an oil-phase feeding micropipe, an engine, a contact mixing rotary table and an ultrasonic exciter, an ultrasonic mixing liquid collecting chamber, a microwave extraction chamber, a microwave generator and a microwave extraction micro-channel; tailends of the water-phase feeding micropipe and the oil-phase feeding micropipe are arc-shaped bent horizontal sections and are respectively fixed at the bottom end of the liquid collecting chamber cover; liquid column cutting holes are formed in the micropipe; the engine is connected with the contact mixing rotary table through a rotary shaft; micropores are formed in the contact mixing rotary table and connected with the microwave extraction micro-channel through an extraction chamber inlet hole; and the microwave generator is arranged on the outer wall of the microwave extraction chamber. According to the invention, a sample solution and an extraction agent can be continuously and stably conveyed into the equipment, the combination speed of the sample solution and the extraction agent isaccelerated, and the fluid contact area and extraction rate are improved.

Description

technical field [0001] The invention relates to a rotary ultrasonic-microwave combined micro-fluid extraction device, which belongs to the field of micro-fluid extraction devices. [0002] technical background [0003] Extraction is the use of the difference in solubility or distribution coefficient of a substance in two immiscible (or slightly soluble) solvents to transfer a substance from one solvent to another. As an important separation unit operation, extraction technology is widely used in chemistry, chemical industry, metallurgy, food processing and other fields. Compared with traditional extraction technology, microfluidic extraction technology extracts fluid by using micro-sized microchannels, which has the advantages of less amount of extractant, high extraction efficiency, less emulsification during extraction, and high safety. It has begun to be valued and applied in the field of chemical metallurgy, but most of the existing microfluidic extraction equipment has ...

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Problems solved by technology

[0004] The invention patent of Chinese Patent Publication No. CN110339593A discloses a high-throughput liquid-liquid extraction microfluidic device and its extraction method. The device and method increase the fluid contact area by designing multiple microfluidic channels and extraction units, and can Continuously feed and stably transport the sample solution and extractant, but the parallel connection of microfluidic channels has high requirements on the manufacturing process, the fluid flow distribution is relatively complicated, and the flow rate is too slow, so the fluid extraction efficiency is not high

Chinese Patent Publication No. CN108654138A discloses a centrifugal force microfluidic extraction device and its extraction method. Under the action of centrifugal force, the aqueous phase and the organic phase spread into a two-phase liquid film, forming a static interface and enlarging the mass transfer area. However, the present invention extracts Long time and complex structure, not suitable for continuous large-scale production

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