Cross current intrinsic cycle ultrasonic and microwave leaching reactor and leaching method thereof

Abstract

The invention relates to a dipping reaction kettle and a dipping method used for cross-flow internal circulation ultrasonic and microwave. The dipping reaction kettle comprises a reaction kettle shell, an upper cover with a ventilation hole, an ultrasonic vibrator group, a mixer, a first cylinder, a first layer of ventilation ring, a second layer of ventilation ring and a third layer of ventilation ring, wherein, the upper cover is arranged on the upper mouth of the reaction kettle shell; the mixer is arranged in the reaction kettle shell; the first cylinder is arranged in the reaction kettle shell; the first layer of ultrasonic vibrator group is arranged around the first cylinder; the third layer of ultrasonic vibrator group is arranged around the internal wall of the reaction kettle shell; the first layer of ventilation ring is arranged at the bottom inside the reaction kettle shell; the second layer of ventilation ring is arranged in the reaction kettle shell and between the first layer of ultrasonic vibrator group ring and the third layer of the ultrasonic vibrator group ring; an external power supply is respectively and electrically connected with a mixing motor, the first layer of ultrasonic vibrator group ring, the second layer of ultrasonic vibrator group ring and the third layer of the ultrasonic vibrator ring. The device of the invention can be used for extracting the active components in Chinese herbal medicine.

Description

technical field [0001] The invention relates to a cross-flow leaching reaction kettle, in particular to a cross-flow internal circulation ultrasonic and microwave leaching reaction kettle, and a method suitable for leaching active ingredients in Chinese herbal medicines. Background technique [0002] The methods currently used in the extraction of Chinese herbal medicines are mainly high temperature and high pressure leaching, solvent extraction, supercritical extraction, etc. These methods have problems such as long operation time, high impurity content, and low extraction rate. Utilizing ultrasonic leaching of Chinese herbal medicine is a new technology for extracting Chinese herbal medicine. It has made great progress in the extraction of volatile spices Rosmarinus officinalis, perishable substances in garlic, and hops. Ultrasonic waves can form high-pressure cavity blasting, vibration and chemical reactions around plant particles leached by solvents, improving extraction...

AI Technical Summary

Problems solved by technology

There are mainly four types of arrangement of ultrasonic vibrators, 1) cleaning ultrasonic equipment: the ultrasonic vibrator is installed at the bottom, which can be easily operated, but there is only one direction of ultrasonic field, the ultrasonic field is not uniform, and the mixing of materials is not uniform enough; The frequency of the ultrasonic vibrator is about 30khz, and the distance of energy transmission is about 300MM. The range of ultrasonic action is narrow, and the crushed Chinese herbal medicine is easy to precipitate, resulting in uneven ultrasonic emission. The relative range of action is reduced, reducing efficiency and affecting Enlarging the scale of production equipment

2) Central vibrator immersion ultrasonic: The ultrasonic vibrator is installed in the middle of the container, which increases the multi-directionality of the vibrator, and the uniformity of the applied solvent also increases, but when the energy of the vibrator increases to a certain extent, the vibrator The heat dissipated is very large, and the volume of the vibrator is small, making the effect uneven

Since the mixture may be repeatedly subjected to ultrasonic action, it will not reach a mixed solution with a high probability of action in a short time. If the material concentration is high, it will easily cause blockage of the material, and at the same time, the action volume is still not easy to enlarge.

4) Peripheral vibrator: Several high-power ultrasonic vibrators are installed on the outer wall of the reactor, the ultrasonic field is uneven, and the effect of ultrasonic waves is uneven

[0003] Most of the above-mentioned equipment uses square and tank-shaped cleaning equipment. The ultrasonic and microwave vibrators are located at the bottom of the cleaning tank. Due to this structure, the operating distance of ultrasonic and microwave is limited, so ultrasonic and microwave equipment are limited in the amplification process.

For some ultrasonic and microwave leaching reactions, the air-lift circulation ultrasonic crushing device is used. The ultrasonic probe is located in the center of the guide tube. Although the strength of this probe is very large, the strength is limited. During the entire ultrasonic amplification process, The power of ultrasonic emission is limited, so the amplification of the whole extraction device is also limited

Some devices with ultrasonic generators installed in the shell cannot make the volume of the whole tank large, because the effective distance of ultrasonic waves is limited, which limits the amplification of ultrasonic equipment in the process of industrialization

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