Spray dryers are favored by the market, and drying companies should increase innovation efforts

In recent years, drying technology has attracted much attention in food and drug industries. The quality of drying equipment affects the shelf life and safety of items. According to relevant statistics, there are currently as many as five to six hundred drying technologies involved in various drying research reports, and there are more than 100 actually applied. In China, there are about 400 manufacturers manufacturing drying equipment, and The number of companies is still increasing.

  Among them,spray dryerIt is an equipment used for drying biopesticides, medicines, and food microorganisms. Spray dryers are widely used in the liquid process forming and drying industry. They are suitable for producing powdery, granular or block solid products from solutions, emulsions, suspensions and plastic pasty liquid raw materials. Therefore, spray drying is a good process when the particle size distribution, residual moisture content, bulk density and particle shape of the finished product must meet the corresponding standards.
   It is understood that the spray drying tower is compact in design and requires no auxiliary equipment. For viscous materials, there is a nozzle cleaner (needle through). When the nozzle is blocked, it will automatically clear it, and the frequency of needle through can be automatically adjusted. Therefore, these active materials maintain their active ingredients unchanged after drying. Most of the drying failures of spray dryers are caused by erroneous adjustment of the air volume or pressure of the intake and exhaust fans. Generally, the exhaust air volume and the wind pressure are low. The result is that the negative pressure of the main drying tower is too low., the exhaust air temperature is too high, resulting in an increase in the water content of the product. Reasonably adjusting the intake and exhaust fans can effectively improve drying efficiency and reduce production energy consumption. Common spray drying equipment collecting devices mainly include two types of bag dust collectors and cyclone separators. The two types of material collecting devices need to correspond to different fan settings.
   The spray dryer has good uniformity, fluidity and solubility, high product purity and good quality, simplified production process, and convenient operation and control. The material liquid is sprayed (rotated) into extremely fine mist by a high-speed centrifugal atomizer at the top of the tower body. The droplets can be dried into finished products in a very short time when contacted with hot air. Special equipment sprays the liquid into a mist and makes it dry in contact with hot air. The air of the spray dryer is filtered and heated, and enters the air distributor at the top of the dryer. The hot air enters the drying chamber uniformly in a spiral shape. In the hot air flow, 95%-98% of the water can be evaporated instantly. The drying time is only completed. It takes a few seconds and is especially suitable for drying heat-sensitive materials.
   In addition, spray dryers can also improve the dissolution rate of certain preparations. The spray dryer can dry instantly at low temperatures, and the activity of the material is not affected at all. It is a small spray dryer dedicated to organic solvents in the laboratory with good safety and simple operation. It can be combined with a nitrogen closed circulation method and a complete solvent recovery method. It can process flammable and toxic solvents and dry easily oxidizable substances. The spray drying tower is suitable for generating powdery and granular solid products from solutions, emulsions, suspensions and pasty liquid raw materials. The drying speed is fast. The surface area of the material liquid is greatly increased after being atomized. In the hot air flow, it can be evaporated instantly. 95%-98% of water can be evaporated, and the drying time only takes a few seconds. It is especially suitable for drying heat-sensitive materials.
   Because spray dryers dry quickly, have good effects, and are expanding their application range, more and more pharmaceutical machine companies on the market are increasing the research and development and innovation of spray drying tower equipment and creating drying equipment in related fields. With the improvement of people's production levels and the expansion of market demand. In the future, dry spray dryer equipment companies will need to work harder in energy conservation, environmental protection and product innovation, eliminate the current widespread product homogenization phenomenon on the market, strive to break through development bottlenecks, and promote the drying equipment industry to a new level.