Vacuum belt dryer can reduce the loss rate of Chinese herbal extracts to zero

The vacuum belt dryer is a continuous vacuum drying equipment with continuous feeding and continuous discharging It has wide applicability and is suitable for most natural plant extracts, especially for materials with high viscosity, easy agglomeration, thermoplasticity and heat sensitivity, and materials that are not suitable for or can not be used for spray drying and vacuum oven drying Choose With its characteristics, vacuum belt dryer is widely used in protein, enzyme and other bioactive substances, Chinese herbal extracts and other pharmaceutical and health industries The vacuum belt dryer can directly send the concentrated extract to the vacuum belt dryer for drying without any auxiliary materials, which can reduce the consumption of the final product and improve the product grade At the same time, drying under the condition of high vacuum and low drying temperature is conducive to maintaining the original color and taste of the extract In addition, the vacuum belt dryer can feed materials continuously at one end of the body and discharge materials continuously at the other end The batching and discharging parts can be set in the clean room The whole drying process is completely closed and does not contact with the external environment, meeting the requirements of GMP Compared with box drying, spray drying and other drying, vacuum belt drying has the characteristics of thin material layer, fast drying, short heating time, isolation operation, pollution prevention, flow operation, automatic control and so on It is reported that the materials with high content of polysaccharides will stick to the wall of the spray drying collector, resulting in difficulty in collecting powder and drying failure The loss of spray drying is large, and the powder is easy to blow out with hot air, resulting in a decrease in yield Vacuum belt drying can not only overcome the shortcomings of spray drying powder too thin and dense, and high temperature, but also the loss rate is basically zero Most of the products extracted from traditional Chinese medicine are the products extracted and concentrated by water, alcohol or other organic solvents Because the materials directly enter the high vacuum container and are dried slowly for a period of time, the particles obtained after drying have a certain degree of crystallization effect, and there are micropores in the interior from the perspective of microstructure After directly crushing to the required particle size, the fluidity of the particles is very good, which can be directly pressed or filled At the same time, the particles have micro loose structure and excellent instant solubility Moreover, the appearance of the particles is good, which can improve the quality of the products for instant (granular) products The vacuum belt dryer is a kind of vacuum drying equipment with continuous feeding and discharging The liquid raw materials are transported to the dryer through the feed pump, and evenly distributed on the conveyor belt through the distributor The boiling point temperature of the materials is reduced through high vacuum The water of the liquid raw materials evaporates at low temperature, and the conveyor belt runs at a uniform speed on the heating plate, and evaporates and dries from the front to the back The end of the cooling discharge, heating temperature from high to low, the discharge end is equipped with a specific vacuum grinding device to achieve different particle size of the finished product, the dried powder can be automatically packed or into the subsequent process section Vacuum belt dryer plays an important role in the extraction of traditional Chinese medicine The author has learned that Jiangsu Xianfeng drying gzdy series vacuum belt dryer products are composed of liquid batching system, feeding system, distribution system, deviation correction system, heat exchange system, vacuum system, unloading system, control system and CIP online cleaning system It has the advantages of flexible and stable drying process, low temperature, airtight, sanitary and clean, low energy consumption and active substances in the products that can be preserved , cost saving features The product can solve the problems of high viscosity, easy agglomeration, thermoplastic and heat sensitive materials, especially suitable for the drying of malt beverage, juice sweet beverage, plant extract, plant protein, animal protein and extract herbal extracts It is the best choice for the past drying materials which can not be dried by spray drying The vacuum belt dryer can independently control the operating parameters such as the number of drying medium, temperature, humidity and tail gas circulation, so as to ensure the reliability of the belt dryer and the optimization of operating conditions, which is widely used in industry However, compared with foreign advanced technology, China's vacuum belt dryer still has a certain gap China's vacuum belt dryer enterprises should actively absorb foreign advanced technology, innovate products and improve product quality Develop large-scale equipment, multi-functional combination machine, improve the degree of automation control and product quality, and continue to extend the product life cycle.