Heat cycle extraction concentration method for traditional Chinese medicine

Abstract

The invention relates to a heat cycle extraction concentration method for traditional Chinese medicine. According to the method, a suit of equipment is used, heat cycle and solvent cycle are reached through microcomputer control in a sealing system consisting of extraction and concentration, and the temperature, pressure and flow speed are controllable (low temperature extraction is permitted), thus the energy consumption and solvent consumption are furthest saved, and the extracting solution quality is improved and stabilized. The system mainly consists of a traditional Chinese medicine extracting tank, a filter, an extracting solution heat exchanger, a rising film evaporator, a gas-liquid separator, a steam compressor, a circulating pump, a concentrated liquor tank, a PLC full automatic control system, an operating platform, an electric instrument control cabinet and a valve. A fully sealed negative pressure extraction concentration system is formed in the extracting tank, the rising film evaporator and the gas-liquid separator, so that automatic heat conversion and condensate water reutilization during the medicine cycle extraction concentration process are realized, the degree of automation, safety performance and environmental performance are improved, and the method is convenient to operate, low in energy consumption and low in human cost.

Description

technical field [0001] The invention relates to a thermal cycle extraction and concentration method of traditional Chinese medicine. Compared with traditional traditional Chinese medicine extraction and concentration methods, the present invention uses a set of equipment to form a closed system for extraction and concentration. Controlled by a microcomputer, heat circulation and solvent circulation are achieved, and the temperature, pressure and flow rate are controllable (low temperature extraction is possible). Thereby, energy consumption and solvent consumption can be saved to the greatest extent, and the quality of the extract can be improved and stabilized. Background technique [0002] Soaking, extraction and concentration of traditional Chinese medicine are important links in traditional Chinese medicine preparations, and the quality of the process directly affects the quality and therapeutic effect of the medicine. The extraction process of Chinese medicinal materi...

AI Technical Summary

Problems solved by technology

[0004] In view of the heat sensitivity of most Chinese herbal medicines, it is not suitable to extract and concentrate at high temperature, and the extraction and concentration process takes a long time, consumes a lot of energy, and the extraction rate is low, so it is an important task to seek energy-saving and low-temperature reflux extraction and concentration technology.

At present, the energy-saving traditional Chinese medicine low-temperature extraction and concentration equipment on the market is composed of a traditional Chinese medicine extraction tank, a heat reflux condenser, an oil-water separator, an evaporator, a heater, a vacuum pump and a vacuum tank, etc. The secondary steam generated by the heater and the evaporator After being condensed into a liquid, it enters the extraction tank, part of the heat energy is reused, and part is taken away by the cooling liquid, and the steam in the equipment cannot be condensed into a solvent, and the uncondensed steam is pumped out by the vacuum pump, resulting in the loss of energy and solvent.

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