Extractive crystallization device for traditional Chinese medicine

Abstract

The invention provides an extractive crystallization device for a traditional Chinese medicine. The extractive crystallization device comprises a first heating tank, a first crystallization tank and a second crystallization tank. Steam in the heating tank of the extractive crystallization device is condensed to enter a water tank; water in the water tank is used as a cooling medium for the first crystallization tank, and can be always recycled; a water resource is saved; the waste of the water resource is avoided. The crystallization of the extractive crystallization device is divided into two steps; a first step is crystallization; a second step is recrystallization; the cooling medium for the first crystallization tank is the water and is slow in cooling speed; a crystalline particle obtained from a liquid medicine is small; an impurity is also smaller; the liquid medicine subjected to the crystallization in the first step enters the second crystallization tank; at the moment, the concentration of the liquid medicine is lower; a cooling medium for the second crystallization tank is liquid nitrogen; in this way, the cooling speed of the liquid medicine is quickened, so that the recrystallization can be completed; the crystallization efficiency of the extractive crystallization device is high; a produced crystal of the traditional Chinese medicine is good in quality, high in purity and uniform in particle size; the convenience and the quickness are provided for a subsequent preparation process.

Description

technical field [0001] The invention relates to the technical field of traditional Chinese medicine processing equipment, in particular to a traditional Chinese medicine extraction and crystallization device. Background technique [0002] In the process of extracting traditional Chinese medicine, in order to make the active ingredients play their role better, it is usually necessary to extract and recrystallize the traditional Chinese medicine. In order to improve the controllability of the crystallization process and ensure that the crystal size obtained is more uniform, the crystal habit is better or To obtain crystals of a specific crystal form, it is usually necessary to add seed crystals. The quality of seed crystals is directly related to the quality of crystals. Seed crystals have certain requirements for purity, particle size and addition amount. There is a technology that directly installs an ultrasonic transducer on the crystallization tank, stimulates the formatio...

AI Technical Summary

Problems solved by technology

[0002] In the process of extracting traditional Chinese medicine, in order to make the active ingredients play their role better, it is usually necessary to extract and recrystallize the traditional Chinese medicine. In order to improve the controllability of the crystallization process and ensure that the crystal size obtained is more uniform, the crystal habit is better or To obtain crystals of a specific crystal form, it is usually necessary to add seed crystals. The quality of seed crystals is directly related to the quality of crystals. Seed crystals have certain requirements for purity, particle size and addition amount. There is a technology that directly installs an ultrasonic transducer on the crystallization tank, stimulates the formation of crystal nuclei through the disturbance of the sound field, and then uses the supersaturation of the solution to provide energy for the growth of the crystal, but after a large number of crystal nuclei are generated, the supersaturation in the solution In the process of crystal growth, some crystals grow fast, while some crystals grow slowly, resulting in uneven particle size of the obtained crystals. At the same time, there may be The phenomenon of crystal agglomeration and agglomeration occurs, so it is urgent to provide a traditional Chinese medicine extraction crystallizer that can provide high-quality seed crystals to ensure that crystals with uniform particle size and high purity are obtained, which will bring convenience to the subsequent Chinese medicine processing technology

Images