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E-mail
shenhaisong2006@126.com
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Phone
13777952852
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Address
Haile Road West, Shipu Science and Technology Park, Xiangshan County, Ningbo City, Zhejiang Province
Ningbo Huazi Pharmaceutical Equipment Manufacturing Co., Ltd. (Ningbo Fuhaihua Pressure Vessel Manufacturing Co., Ltd.)
Working principle of hot reflux extraction concentrator
Date: 2025-04-01Read: 78
The hot reflux extraction concentrator is based on a collaborative mechanism of multi-stage circulation and thermal energy reuse, and its core principle can be divided into the following steps:
1、 Dynamic solvent extraction
Initial extraction: Put the medicinal herbs into an extraction tank with 5-10 times the solvent (such as water or ethanol), heat them directly with steam or jacket until boiling, and continue for 20-30 minutes to complete the initial effective ingredient dissolution.
Liquid transfer: Part of the extracted liquid is transferred to the concentrator through a filtration tube or vacuum system, while the remaining liquid continues to participate in the recycling extraction.
2、 Secondary steam cycle utilization
Steam regeneration: Heating the medicinal solution in the concentrator generates secondary steam, which is transported back to the extraction tank through pipelines as a heat source to maintain the continuous boiling of the medicinal materials, avoiding additional energy consumption.
Solvent reflux: The secondary steam is converted into liquid solvent by the condenser and returned to the extraction tank in the form of spray or free dripping. It is used as a new solvent to cover the surface of the medicinal materials, penetrate the layer of medicinal materials from top to bottom, enhance dissolution efficiency, and prevent the accumulation of medicinal materials.
3、 Multi level concentration and cyclic synergy
Gradient concentration: The extraction solution is concentrated in a concentrator through segmented evaporation (such as switching between the first and second heaters), and the boiling point is lowered through a vacuum system to protect thermosensitive components.
Concentration difference driven: During the concentration process, the concentration difference of the traditional Chinese medicine solution continues to decrease, promoting the diffusion of active ingredients into the solvent. Combined with the circulation and replenishment of the solvent, the extraction yield is significantly improved.
4、 System integration optimization
Structural linkage: The equipment integrates extraction tanks, concentrators, condensers, and reflux devices, achieving continuous operation through steam power and vacuum pressure coordination.
Process Composite: Integrating reflux extraction, Soxhlet extraction, and percolation extraction principles to achieve synchronous extraction concentration and shorten the process time.
This principle achieves the dual goals of efficient extraction and energy conservation through dynamic circulation of solvents, cascade utilization of thermal energy, and equipment linkage design.
