Solid-liquid extraction equipment and process in clean room
Solid-liquid extraction equipment and process in clean room
Extraction equipment in clean room is divided into intermittent extraction equipment and continuous extraction equipment. According to the movement state of solid materials in the extractor, it can also be divided into static extraction equipment and dynamic extraction equipment; static extraction is usually performed in the extraction tank. Inside, basically static extraction,...
Text label: Extraction equipment in clean room, Design and installation of clean room, Solid liquid equipment and process
Solid-liquid extraction equipment and process in clean room
Extraction equipment in clean room is divided into intermittent extraction equipment and continuous extraction equipment. According to the movement state of solid materials in the extractor, it can also be divided into static extraction equipment and dynamic extraction equipment; static extraction is usually performed in the extraction tank. It is basically static extraction. Commonly used methods are single-stage extraction, Soxhlet extraction and tank group extraction. Dynamic extraction often adopts mechanical stirring, screw conveying and other forms. The dipping equipment is mainly used for dipping extraction. A certain amount of cut or pulverized medicinal materials is placed in the leacher, and a certain amount of solvent is injected to make the solid-liquid contact. After a certain period of time, the components to be extracted are fully dissolved, and then Separation by means of the false bottom of the extractor and filter cloth or other methods, in order to strengthen the impregnation, machinery such as agitators, pumps and heating devices, such as jackets or coils, can be added to the macerator.
Multi-energy extraction is composed of extraction tank, condenser, cooler, oil-water separator and residue filter, etc. The extraction tank jacket is heated with steam, and the steam in the liquid is condensed and cooled, and can be separated by the oil-water separator The fragrant oil is discharged, or directly returned to the tank, which can be used for dipping, warm soaking, hot reflux, etc. After the filter, the liquid can be pumped back to the original tank with a pump for recycling extraction, but the clarity of the hot reflux leachate is poor. , Due to factors such as high temperature, inactive ingredients are also easily leached, and are generally used in solid oral preparations or external medicines. The countercurrent extraction of the tank group is to connect a certain number of extraction tanks in series, and the solvent passes through the 1-3 tanks in turn to obtain the leachate, and the 4 tanks complete the unloading and charging. 4 tanks in turn, 1 tank completes unloading and charging, and so on; the leachate flowing out from the last stage is obtained by contacting the freshest material, so that a relatively thick leachate can be obtained, and a large mass transfer push can be maintained. The fresh solvent is added to the first stage, although the solute concentration of the material is very low, it can still have a considerable mass transfer driving force. Therefore, in the multi-stage countercurrent extraction, the amount of solvent consumed per unit of solute extraction is higher than that used in single-stage extraction. The amount is small. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for dust-free workshops and GMP workshops.
The feeding, slag discharge and extraction liquid collection of the continuous extractor can be carried out continuously, with high extraction efficiency, fast extraction rate and high degree of automation. The solid discharge extractor is connected with several arcuate grooves. Each groove has a rotatable star-shaped wing wheel. There are sieve holes on the blade of the wing wheel. Pushed by the wing wheel to move from left to right, each time the material is pushed up between the two arcuate grooves, a scraper scrapes the material into the front arcuate groove, and discharges the slag to the far right end, and the solvent is caused by the slope of the extractor. The displacement flows from right to left and is discharged to the far left. The horizontal rotary continuous extractor belongs to a type of spray percolation continuous extractor. , which is supported on the track by the roller under the movable bottom; the medicinal materials are added to the upper part of the extractor, and each grid has a spray pipe to spray the solvent onto the medicinal materials for extraction. In this repeated countercurrent leaching, the final collection is the leaching solution with a high concentration; the entire extraction process of the flat-pack extractor adopts automatic control, in addition to controlling the rotational speed of the equipment and the amount of feed, it can also control the injection volume of solvent and extraction solution, Temperature, and can realize online measurement of technical indicators of the extraction liquid in the liquid collection grid according to user needs.
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