Rapid growth of extraction and concentration equipment promotes high quality development of traditional Chinese medicine industry

[product information of the pre-treatment process of traditional Chinese medicine generally includes the selection, selection, moistening, cutting, drying, grinding and other processes of traditional Chinese medicine, while the extraction process generally includes extraction, concentration, separation (alcohol sedimentation / water sedimentation, filtration, centrifugation), etc In the extraction and concentration stage of traditional Chinese medicine, it needs to use corresponding pharmaceutical equipment, such as thermal reflux extraction unit, single effect concentrator, double effect concentrator, etc the use and rapid growth of these equipment are to some extent promoting the high-quality development of traditional Chinese medicine industry It is reported that the hot reflux extraction unit is a popular and fast extraction equipment in recent years It integrates the three principles of reflux extraction, percolation extraction and Soxhlet extraction of the existing extraction equipment, and also combines the external thermal circulation concentration technology to concentrate the extraction and concentration on one equipment at the same time According to the introduction of relevant experts, a large amount of steam enters the reflux device in the extraction tank of the thermal reflux extraction unit, condenses into the thermal condensate and falls back to the extraction tank, which is evenly added to the surface of the medicinal materials as a new solvent The new solvent passes through the medicinal materials layer from top to bottom, dissolving the soluble substances in the medicinal materials to the bottom of the extraction tank, so as to realize full extraction When the extract enters the concentration tank, the concentration difference of the traditional Chinese medicine solution in the extraction tank is continuously reduced, and the yield of the effective component is increased as much as possible The manufacturer of the thermal reflux extraction unit said: "due to the small amount of solvent used, the drug solution to be concentrated is less, the extraction and concentration process time is short, which can save energy." Small scale extraction and concentration equipment small scale extraction and concentration equipment is a device for the combined application of active ingredient extraction and concentration, which has the advantage of integrating extraction and concentration Small scale extraction and concentration equipment adopts closed continuous cycle extraction and concentration In the process of hot extraction, steam is generated during decocting, which can be recovered at the same time of reflux after condensation When the condensate is refluxed, it flows to the deep layer of the material, which makes the full contact of the material and liquid play the role of dynamic extraction At the same time, it reduces the input of solvent and the extraction time, improves the production efficiency and the recovery rate of the product The solution in the small-scale extraction and concentration equipment continuously enters the bottom of the circulation heater through the filter, and is concentrated step by step The whole spray drying experiment process is easy to control the experimental process and detect and adjust problems in time In addition, all glass components of the small extraction and concentration equipment produced by the manufacturer are easy to disassemble and clean Built in imported oil-free air compressor, the particle diameter of powder spraying is normal distribution, good fluidity, and the noise is very low, less than 60 dB, and in line with the National Laboratory noise standard Single effect concentrator (ethanol) it is reported that the ethanol recovery capacity of single effect concentrator is large, sometimes referred to as ethanol recovery device, but the energy saving effect is not as good as double effect and three effect concentrators When using the single effect concentrator, attention should be paid to: the vacuum degree should not be too large, and if the vacuum is too large, the ethanol will be sucked away, resulting in low recovery rate; if the vacuum is too large, it will cause excessive boiling of the liquid medicine and loss of the liquid medicine Second, the temperature in the evaporator should be controlled at about 80 ℃ when recovering ethanol Third, the cooling water temperature should be lower than 40 ℃, the lower the temperature, the better the condensation effect Under normal conditions, the recovery concentration of ethanol in single effect concentrator can reach about 85%, and then it can be refined by distillation tower to reach 90% ～ 92% It should be noted that the larger the output is, the greater the evaporation capacity of the single effect concentrator is, and the more heating steam is required At the same time, the more cooling water is consumed, which is the main reason for the large energy consumption of single effect concentrator The basic purpose of double effect concentrator double concentrator is to save energy and reduce consumption When it works, the secondary steam generated by primary steam concentration will be concentrated in the next step, and the concentrated liquid medicine will enter the primary concentration in series, and so on There are also many points to be paid attention to in the double effect concentrator, for example, when the equipment is used as the concentration process, the condenser should not be filled with condensate, otherwise there will be internal reflux, which will slow down the concentration speed In the recovery of ethanol, the condenser should be connected with condensed water to produce condensation, so as to facilitate the recovery of ethanol In addition, the equipment shall be restored to normal pressure during discharging Some equipment experts also remind that if the operator wants to speed up the concentration, vacuum decompression can be used for concentration, and the vacuum degree shall be determined according to the different material properties and production processes In addition, the vacuum degree should not be too large when the organic solvent is recovered to prevent the loss of organic solvent.