1、 Alcohol precipitation tank, traditional Chinese medicine alcohol precipitation tank, alcohol precipitation tank overview:

The traditional Chinese medicine alcohol precipitation tank series is a specialized equipment developed for the alcohol precipitation (also known as solvent exchange or alcohol precipitation) process in traditional Chinese medicine factories. It is mainly used for freezing or room temperature alcohol precipitation of concentrated Chinese medicine decoctions. It can also be used for water precipitation of concentrated Chinese medicine extracts after alcohol extraction, as well as for mixing and blending of feed solutions.

There are six commonly used product specifications: 500L, 1000L, 1500L, 2000L, 3000L, and 6000L. The models are JC-500, JC-1000, JC-1500, JC-2000, JC-3000, JC-6000, and other specifications designed and manufactured according to user requirements.

2、 Structural characteristics and technical performance of traditional Chinese medicine alcohol precipitation tank:

2.1 Structural characteristics: This equipment consists of a cylindrical body with a jacket, an elliptical head, and a conical bottom. It is equipped with a stirring system that meets GMP requirements and a special fine tuned rotating liquid outlet pipe.

Frozen salt water or cooling water can be introduced into the jacket of the cylinder to indirectly cool the feed liquid and control the temperature required for alcohol precipitation.

2.2 Technical Performance

The clear liquid outlet is a liquid outlet tube that is at a certain angle to the cylinder and can rotate 360 °. This tube is equipped with a guide gear, and the rotation direction of the liquid outlet tube is adjusted by the hand wheel outside the tank top to ensure that the clear liquid is basically extracted without causing sediment (including flocculent substances) to be extracted. There are light holes and sight holes on the top of the tank to inspect the discharge of liquid from the tank.

3、 Scope of use of traditional Chinese medicine alcohol precipitation tank:

Suitable for the precipitation process operation of traditional Chinese medicine extract concentrate and alcohol extract concentrate under rated working pressure and temperature conditions. It is also applicable to the freezing or room temperature precipitation, liquid-solid phase separation and other process operations of suspensions in other industries such as pharmaceuticals, chemicals, dyes, and food.

4、 Working principle and operation of traditional Chinese medicine alcohol precipitation tank:

4.1 The traditional Chinese medicine alcohol precipitation tank belongs to the sedimentation type liquid-solid phase separation equipment. The concentrated solution of traditional Chinese medicine decoction (usually with a specific gravity of about 1.1) is prepared by adding alcohol to remove non alcohol soluble starch, protein, etc. It is then subjected to liquid-solid separation by freezing and settling at room temperature or low temperature to improve the purity and clarity of the traditional Chinese medicine extract, thereby enhancing product quality.

Concentrate and alcohol are added in their respective proportions according to the process requirements, and frozen salt water or cooling water is turned on. Then, stirring is turned on to mix the material evenly. After reaching the required temperature of the material, stirring is stopped, and frozen salt water or cooling water is continued to be introduced into the jacket to ensure the required liquid temperature. After the sedimentation is completed, open the supernatant discharge valve and use a pump or vacuum to extract the supernatant. As the supernatant level gradually decreases, use the rotating handwheel to adjust the angle of the outlet pipe in the tank. Observe and control through the top mirror. After the supernatant is extracted, immediately close the outlet valve. If the sediment needs to be discharged dry, type A can be used, which requires controlling two cylinders with pneumatic switches, opening the bottom cover, unloading and cleaning the sediment, and then closing the bottom cover. If liquid discharge is carried out, B-type slag outlet can be selected. First, add water (or other liquid medium) and start stirring to make the sediment into a suspension. Then, open the bottom ball valve to drain the suspension and clean the inner wall of the tank with water before closing the ball valve.

4.2 The precipitation time of liquid-solid separation (alcohol precipitation) is directly related to the liquid temperature inside the tank. Generally, the alcohol precipitation of traditional Chinese medicine is as follows:

Alcohol precipitation temperature at room temperature 10-15 ℃ 5-10 ℃ 0-5 ℃

Alcohol precipitation time 48 hours 24 hours 12 hours 8-10 hours

5、 Traditional Chinese Medicine Alcohol Precipitation Tank:

project	unit	JC-300	JC-500	JC-1000	JC-1500	JC-2000	JC-3000
volume	m3	0.3	0.5	1.0	1.5	2.0	3.0
Heat Exchange Area	m2	1.8	3.0	4.5	6.5	7.0	9.5
operation temperature	℃	-15~room temperature	-15~room temperature	-15~room temperature	-15~room temperature	-15~room temperature	-15~room temperature
Heat exchange medium * working pressure	MPa	0.25	0.25	0.25	0.25	0.25	0.25
Working medium, working pressure	MPa	0.01	0.01	0.01	0.01	0.01	0.01
Heat transfer system	KJ/M2.h.℃	150~200	150~200	150~200	150~200	150~200	150~200
stirring power	kw	0.75	0.75	1.5	2.2	2.2	2.2
stirring speed	r/min	250	250	160	160	160	140
total weight	kg	612	1260	1480	1750	1670	2135