Control method of cold precipitation temperature in traditional Chinese medicine alcohol precipitation process

Abstract

The invention discloses a control method of cold precipitation temperature in a traditional Chinese medicine alcohol precipitation process. The control method comprises the following steps: 1) an alcohol precipitation pot is provided with a low-temperature water incoming and outgoing adjustment value and a temperature sensor; 2) the cold precipitation temperature T, temperature reduction time t and heat preservation and cold precipitation time are set on a controller, and the controller is set to start to perform an adjustment when a fluctuation range of the cold precipitation temperature exceeds plus or minus 1 DEG C in a heat preservation and cold precipitation process; 3) the controller performs temperature control through a change, caused by an adjustment of an opening degree K, of flow of low-temperature water, wherein K=0.1*(T<0>-T<c>)*k*100%=0.1*(T<0>-T<c>)*(T<0>-T) / t*100%; and 4) when temperature drops down to the set cold precipitation temperature T, heat preservation is started, the temperature sensor detects temperature of a material in real time, the controller performs the real-time adjustment, and, after set time is reached, a cold precipitation stage ends. The control method can achieve accurate control of the temperature reduction rate and the cold precipitation temperature, and guarantee the high-quality grade and homogeneity of final products.

Description

technical field [0001] The invention relates to the field of traditional Chinese medicine pharmacy. More specifically, the present invention relates to a method for controlling the cooling temperature of the traditional Chinese medicine alcohol precipitation process. Background technique [0002] Chinese herbal medicines are first extracted with water, and then add an appropriate amount of ethanol at a certain concentration to remove impurities such as protein and tannin. . The alcohol precipitation process is widely used because of its simple operation steps, relatively low equipment cost, and effective removal of impurities. It has been the preferred separation and removal technology for Chinese traditional medicine manufacturers in recent decades. Therefore, the advanced nature of the alcohol precipitation process and its quality control level are closely related to the safety, stability and effectiveness of traditional Chinese medicine products, which in turn affects t...

AI Technical Summary

Problems solved by technology

Among them, the cooling temperature plays a vital role in the effect of alcohol precipitation: if the cooling stage is too fast, the precipitation particles will be finer and difficult to filter; if the cooling is too slow, the alcohol precipitation time will be prolonged; Too high or too low will affect the precipitation of impurities, affect the quality of the alcohol precipitation supernatant, and even affect the quality of the final product

[0004] At present, the cold precipitation temperature of traditional Chinese medicine alcohol precipitation process is still generally controlled by manual experience, and it is difficult to ensure the uniformity of the product between batches. Therefore, it is necessary to develop a control method for the cold precipitation temperature of traditional Chinese medicine alcohol precipitation process

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