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Microwave extraction equipment
Microwave extraction equipment uses microwaves to extract the medium, and the microwaves apply three-dimensional heating to the material to improve th
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Microwave extraction equipmentIt is a method of extracting media using microwaves, which apply three-dimensional heating to materials to improve extraction efficiency. In a microwave field, the differences in the microwave absorption ability of various materials result in selective heating of certain regions of the matrix material or certain components in the extraction system, leading to energy or potential energy differences within the material. The extracted material obtains sufficient power to separate from the matrix or system. The mechanism of microwave extraction can be understood from two aspects.
On the one hand, the electromagnetic field generated by microwaves accelerates the diffusion rate of the extracted components towards the extraction solvent interface. When water is used as a solvent, under the microwave field, water molecules rotate at high speed to become excited states, which is a high-energy unstable state, or water molecules vaporize, enhancing the driving force of the extracted components; Alternatively, water molecules themselves release energy back to the ground state, which is then transferred to other molecules of the substance, accelerating their thermal motion and shortening the time for molecules of the extraction component to diffuse from the interior of the material to the extraction solvent interface. This increases the extraction rate several times and also reduces the extraction temperature, ensuring the quality of the extraction to the greatest extent possible.
On the other hand,Microwave heating equipmentThe principle of radiation is that high-frequency electromagnetic waves penetrate the extraction medium and reach the internal vascular bundles and glandular systems of the material. Due to the absorption of microwave energy, the temperature inside the cell rapidly rises, causing the internal pressure of the cell to exceed the capacity of the cell wall to expand and withstand, leading to cell rupture. The active ingredients inside the cell flow out freely and are captured and dissolved by the extraction medium under lower temperature conditions. By further filtering and separation, the extracted material is obtained.
Can type microwave extraction equipment, also known as microwave extraction tank orMicrowave extraction equipmentIt consists of a tank body, a microwave action chamber, a stirrer, a feeding port, a liquid feeding port, a microwave source, a discharge port, and a liquid outlet. This device has a similar structure to a conventional dynamic extraction tank, except that the steam jacket heating is changed to microwave chamber heating, the flat heating is changed to three-dimensional heating, and the heat source is changed from the steam jacket wall to the heating of the liquid itself. It can be applied to the extraction of block, sheet, granular, and powdered materials, and can be subjected to insulation, constant temperature, normal pressure, positive pressure, and negative pressure extraction, and can meet the process parameter requirements of different Chinese herbal medicine extraction. The installed microwave power capacity can range from several hundred watts to several hundred kilowatts, and the tank capacity can range from tens of milliliters to several cubic meters. On site practice has confirmed that the processing capacity of a 1 cubic meter microwave extraction equipment is equivalent to the processing capacity of a conventional dynamic extraction tank of 5-8 cubic meters. Its disadvantages are that the microwave installation power of the microwave extraction production line is relatively high, the manufacturing difficulty is high, the extraction production line can only operate in batches, and the auxiliary time for feeding, liquid inlet, liquid outlet, slag outlet, etc. is long, which reduces the utilization rate of the whole machine. It should be pointed out that due to the limited penetration depth of microwaves, microwave extraction equipment must be equipped with a stirrer to achieve dynamic extraction. URL:www.gywbl.com
On the one hand, the electromagnetic field generated by microwaves accelerates the diffusion rate of the extracted components towards the extraction solvent interface. When water is used as a solvent, under the microwave field, water molecules rotate at high speed to become excited states, which is a high-energy unstable state, or water molecules vaporize, enhancing the driving force of the extracted components; Alternatively, water molecules themselves release energy back to the ground state, which is then transferred to other molecules of the substance, accelerating their thermal motion and shortening the time for molecules of the extraction component to diffuse from the interior of the material to the extraction solvent interface. This increases the extraction rate several times and also reduces the extraction temperature, ensuring the quality of the extraction to the greatest extent possible.
On the other hand,Microwave heating equipmentThe principle of radiation is that high-frequency electromagnetic waves penetrate the extraction medium and reach the internal vascular bundles and glandular systems of the material. Due to the absorption of microwave energy, the temperature inside the cell rapidly rises, causing the internal pressure of the cell to exceed the capacity of the cell wall to expand and withstand, leading to cell rupture. The active ingredients inside the cell flow out freely and are captured and dissolved by the extraction medium under lower temperature conditions. By further filtering and separation, the extracted material is obtained.
Can type microwave extraction equipment, also known as microwave extraction tank orMicrowave extraction equipmentIt consists of a tank body, a microwave action chamber, a stirrer, a feeding port, a liquid feeding port, a microwave source, a discharge port, and a liquid outlet. This device has a similar structure to a conventional dynamic extraction tank, except that the steam jacket heating is changed to microwave chamber heating, the flat heating is changed to three-dimensional heating, and the heat source is changed from the steam jacket wall to the heating of the liquid itself. It can be applied to the extraction of block, sheet, granular, and powdered materials, and can be subjected to insulation, constant temperature, normal pressure, positive pressure, and negative pressure extraction, and can meet the process parameter requirements of different Chinese herbal medicine extraction. The installed microwave power capacity can range from several hundred watts to several hundred kilowatts, and the tank capacity can range from tens of milliliters to several cubic meters. On site practice has confirmed that the processing capacity of a 1 cubic meter microwave extraction equipment is equivalent to the processing capacity of a conventional dynamic extraction tank of 5-8 cubic meters. Its disadvantages are that the microwave installation power of the microwave extraction production line is relatively high, the manufacturing difficulty is high, the extraction production line can only operate in batches, and the auxiliary time for feeding, liquid inlet, liquid outlet, slag outlet, etc. is long, which reduces the utilization rate of the whole machine. It should be pointed out that due to the limited penetration depth of microwaves, microwave extraction equipment must be equipped with a stirrer to achieve dynamic extraction. URL:www.gywbl.com
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