Shanghai small pie spray dryer how to dry high-temperature or heat-sensitive materials - Database & Sql Blog Articles

How to dry a small spray dryer with high sugar content in Shanghai? The small spray dryer has a problem of drying the organic solvent in the spray drying. Generally, the organic solvent will be inflammable and explosive, and the explosion-proof type is closed. The laboratory small spray dryer allows the material to circulate in a closed drying system. The entire system is filled with an inert gas (such as nitrogen or argon) to avoid contact of the organic solvent gas with the outside oxygen, ensuring safe production. The small spray dryer adopts a safe nitrogen (or other inert gas) closed circulation mode. The whole system is closed, and the oxygen concentration is monitored online. Once the oxygen concentration in the system reaches 2%, the system will automatically stop and alarm. It is a small-sized small spray dryer for laboratory organic solvents with good safety and easy operation. It can treat flammable and toxic solvents and can be easily oxidized by the combination of nitrogen closed circulation and complete solvent recovery. Drying of the substance. Further, since the boiling point of the organic solvent is low, it is possible to dry the substance which is susceptible to heat denaturation by a low-temperature drying method. Small spray dryer spray drying high sugar content (if juice, Chinese herbal medicine or natural product extract) or heat sensitive materials (such as enzyme preparation live bacteria, etc.) because most of the polysaccharide disaccharides, the melting point is relatively low, when heated, The sugar has melted, and the polysaccharide disaccharide itself is relatively easy to absorb moisture, so the ordinary small spray dryer will easily appear sticky wall, and it is not easy to get good dry powder or granules. In addition, like enzyme preparations, live bacteria and some high-molecular materials that are easily denatured at high temperatures, ordinary small spray dryers are used, and the materials are easily deactivated or denatured. At this time, the inlet air temperature of the small spray dryer is lowered. At the outlet temperature, a better experimental result can be obtained. The advantages of the small spray dryer are mainly concentrated in the following points: (1) The small spray dryer has a very fast drying speed and the surface area is large after the liquid is sprayed. In a high temperature air stream, it can evaporate in an instant. (2) The temperature of the droplets during the drying process of the small spray dryer is not high, and the product quality is good. Spray drying uses a wide temperature range (80-800 degrees). Even with high temperature hot air, the exhaust air temperature is not very high. In the early stage of drying, the material temperature does not exceed the wet bulb humidity of the surrounding hot air. it is good. For example, defects such as protein changes, vitamin loss, and oxidation are less likely to occur. The quality of heat sensitive materials, organisms and drugs is basically close to the standard for drying under vacuum. (3) The small spray dryer product has good dispersibility, fluidity and solubility. Since the drying process is completed in the air, the product can basically maintain a spherical shape similar to the droplet, and has good dispersibility and fluidity. And solubility. (4) Shanghai Xiaopai small spray dryer production process is decomposed, easy to operate and control. Spray drying is usually used to treat solutions with a moisture content of 40%-60%. Even if the moisture content of special materials is as high as 90%, it can be used without concentration. Dry into a powdered product once. Most products do not need to be pulverized and screened after drying, which reduces the production process and simplifies the production process. The particle size, bulk density and moisture of the product can be adjusted within a certain range by changing the operating conditions, and the control and management are very convenient. (5) Preventing pollution and improving the production environment Since spray drying is carried out in a closed drying tower, this avoids the drying of dry products in the workshop. For toxic and odorous materials, the production process of closed circulation system can be used to burn toxic gas and odor, prevent air pollution and improve the production environment. (6) Small spray dryer is suitable for continuous large-scale production. Spray drying can meet the requirements of large-scale production in industry. Dry products can be continuously discharged, and combined with cooler and wind power for post-processing, forming a continuous production line. . Technical parameters of small spray dryer: ◆ Inlet air temperature control: 30 °C ~ 300 °C; ◆ Outlet temperature control: 30 °C ~ 140 °C; ◆ Evaporated water: 1500mL / H ~ 2000ml / h; ◆ Maximum feed: maximum 2000ml / h (adjustable); ◆ feeding mode: peristaltic pump adjustment; ◆ minimum feeding amount: 50mL; ◆ temperature control accuracy: ± 1 ° C; ◆ average drying time: 0.8 ~ 1.0S; ◆ machine power: 4.5KW / 220V; ◆ Dimensions: 1380mm (height) * 770mm (length) * 590mm (width).