Shenzhen Bibao Wuyuan, Gedian Renfu Pharmaceutical Excipients Co., LTD., Shenzhen Baohuacheng Co., LTD., Anshan Zhongxing Pharmaceutical Group, Shandong Zhenghan Biology, Shandong Everbright Cellulose
Spray drying of tea powder is widely used in liquid process forming and drying industry. Suitable for producing powder, granular or bulk solid products from solutions, emulsions, suspensions and plastic paste liquid raw materials. Therefore, when the particle size distribution, residual moisture content, bulk density and particle shape of the finished product must meet precise standards. Spray drying is an ideal process.
Tea powder is made of fresh leaves of tea tree after high temperature steam degassing and special technology treatment, instantly crushed into more than 400 mesh of pure natural tea steamed green ultra-powder, Z to maximize the preservation of the original color of tea, nutrition, pharmacological ingredients, without any chemical additives, in addition to direct drinking, can be widely added to all kinds of flour products (cake, bread, noodles, biscuits, tofu); Frozen products (custard, ice cream, frozen dumplings, ice cream, yogurt); Candy chocolate, melon seeds, mooncake special fillings, medical health products, daily chemicals, etc., in order to strengthen its nutritional health effects, different tea can be made into different tea powder, the same tea production process is different, there will be a big difference.
Working principle
The air is filtered and heated into the air distributor at the top of the dryer, and the hot air enters the drying chamber uniformly in a spiral shape. The material liquid is sprayed into very fine mist droplets by the high-speed centrifugal atomizer at the top of the tower body, which can be dried into finished products in a very short time when it is in contact with the hot air. The finished products are continuously output from the bottom of the drying tower and the cyclone separator of the LPG series high-speed centrifugal spray dryer, and the exhaust gas is drained by the fan.
1、The drying speed is fast, the surface area of the material liquid is greatly increased after atomization, in the hot air stream, 95% to 98% of the water can be evaporated instantly, and the drying time is only a few seconds, especially suitable for the drying of heat-sensitive materials.
2、LPG series high speed centrifugal spray dryer products have good uniformity, fluidity and solubility, high product purity, good quality.
3、The production process is simplified and the operation control is convenient. For the moisture content of 40-60% (special materials up to 90%) of the liquid can be dried into powder products, dry without grinding and screening, reduce the production process, improve product purity. The product particle size, loose density, moisture, in a certain range can be adjusted by changing the operating conditions, control and management are very convenient.
1. atomization: The atomization system of the unit must ensure that the size of the droplets is evenly distributed, which is crucial. Because this can ensure the product quality of the pass rate.
2. Contact between hot gas and fog droplets: When there is a sufficient amount of hot gas into the drying chamber, the direction and Angle of hot gas flow must be considered, whether it is flow, countercurrent or mixed flow, to ensure full contact with fog droplets, in order to carry out adequate heat exchange.
