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50L Conical Dynamic Extraction Tank

Dynamic extraction tanks are primarily used in process operations such as atmospheric- and low-pressure water decoction, warm immersion, hot reflux, forced circulation, percolation, aromatic oil extraction, and organic solvent recovery for traditional Chinese medicine, plant, and animal materials.

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Biopharmaceutical equipment

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Product Description

Product Introduction
Dynamic extraction tanks are primarily used in process operations such as atmospheric- and low-pressure water decoction, warm immersion, hot reflux, forced circulation, percolation, aromatic oil extraction, and organic solvent recovery for traditional Chinese medicine, plant, and animal materials.

Accessory components
The dynamic extraction tank can be equipped with a condenser, a cooler, an oil–water separator, a defoamer, a filter, and a medicinal‑liquid pump. The oil–water separator is specifically designed for alcohol‑based extraction to recover the oil phase. The dynamic extraction tank features an agitation system; a mechanical stirrer is installed inside the vessel to induce motion of the feedstock during the extraction process, thereby accelerating mixing and effectively preventing low‑density medicinal liquids from floating on the solvent surface.
Insufficient wetting of the upper surface enhances extraction efficiency and shortens extraction time.

Working principle
The entire extraction process in the extraction vessel is carried out within a closed, recirculating system, allowing for both atmospheric-pressure and low-pressure extraction. Depending on the application—whether water extraction, alcohol extraction, oil extraction, or other uses—the specific process parameters are determined by the customer based on the pharmacological properties of the target compound.
1. Water extraction: Water and the traditional Chinese medicine are loaded into the extraction vessel according to a specified process ratio. The jacketed heating source is then activated; once the contents in the vessel reach boiling, the heat supply is reduced to maintain gentle simmering. The extraction is carried out for an appropriate duration based on the pharmacological extraction protocol, ensuring that the active constituents of the herbal material or medicinal slices are fully dissolved in water.
2. Alcohol Extraction: First, the medicinal materials and alcohol are added to the vessel according to a specified process ratio, and the system is sealed. A jacketed heating source is applied; once the vessel reaches the required temperature, the heat supply is reduced to maintain that temperature for a set period, ensuring that the active constituents of the traditional Chinese medicine or herbal slices are fully dissolved into the alcohol. The vaporized alcohol is condensed in a condenser, converted back into liquid form, and returned to the storage tank for subsequent distillation and purification. To enhance efficiency, a pump can be used for forced circulation, drawing the extract from the bottom of the vessel and recirculating it back into the vessel through an upper inlet.
3. Oil Extraction: First, the traditional Chinese medicine containing volatile oils and water are added to the extraction vessel according to a specified process ratio. Steam is introduced into the jacketed heating system; once the desired volatilization temperature is reached, the steam flow rate is adjusted and the internal temperature is maintained for a prescribed duration. The evaporated aromatic oil is then cooled via a cooling system, and the cooled herbal extract is separated using an oil–water separator.

Product Applications
1. Biopharmaceuticals: Extraction, percolation, dissolution, and purification of active ingredients from traditional Chinese medicine.
2. Food: purification of hops and vegetable/animal oils, extraction of plant pigments, extraction of bioactive plant compounds, and extraction of flavors and fragrances.
3. Cosmetics: extraction, purification, and isolation of cosmetic raw materials;
4. Chemical Industry: recovery of reaction feedstocks, dissolution of organic solvents, and purification.