The solution, emulsion, suspension liquid or slurry are sprayed into fine beads in the hot air, going down from the top of the drying chamber to the bottom, the water will be evaporated to and the product becomes small granular product. Induce hot air from the top of drying tower, at the same time, pump the material liquid to the top of the tower by high pressure pump, the feeding solution becomes fine beads or small droplets through the pressure nozzle(s). When the droplets meet the high temperature hot air, the water will be evaporated immediately, and the material liquid is dried into dry product in a very short time, the product is discharged from the bottom of the drying tower, or from the cyclone (depend on the configuration). When the hot air contacts with the droplets, the temperature declines significantly, and the humidity increases greatly, and then will be exhausted by exhaust fan. The fine powder in the air will be collected through different separating devices There`re different fine powder separation and recovery devices, such as cyclone (the common type and various combination type), bag filter, cyclone + bag filter, cyclone + wet scrubber, and bag filter + wet scrubber etc. We should different fine powder separation and recovery devices as per the characteristics of product and requirements of customer. Depend on the product features and requirements, we might install secondary drying and cooling system (such as ZLG vibration Fluid Bed or pneumatic transportation), formulation system or powder sieving system etc after the Spray Dryer, or dehumidifier. The particle size of the product from Pressure Spray Dryer is normally within the range of 120mesh to 20 mesh. If bigger particles are required, we suggest FL Fluidized Granulator or re-combined agglomerator. Pressure Spray Dryer,Spray Drying Equipment,Spray Drying Food,Spray Dry Powder Griffin Technology Manufacturing Co., Ltd. , https://www.griffindryingeqpt.com
BASF to build polyurethane factory in Shanghai
BASF will expand its polyurethane business in Asia and invest in a new polyurethane specialty chemical plant in Pudong. This factory is mainly tailored for Chinese customers and was first put into production in 2007. The project has been approved by the Shanghai Municipal Government and is expected to start next year. The project includes a comprehensive polyurethane product building, a technical center, and a thermoplastic polyurethane factory. The entire plant will be affiliated with BASF Polyurethane Specialty Chemicals China. Since each product is manufactured in the same area, the cost will be controlled. Both MDI and TDI required by Pudong are produced in Caojing and are expected to be put into operation by BASF and its partners in 2006. The president of BASF's polyurethane business said that the basic raw materials will be produced locally and the finished products will use separate packaging. BASF already has several factories in China, BASF has 27 plants worldwide and 5 in Asia. It is expected that in the next ten years, China's polyurethane market will grow by more than 10% annually and become the largest market in the world in 2015. At the same time, product innovation will also promote market growth. So BASF will also establish a R&D center at the same time. BASF is the world's leading supplier of polyurethane specialty chemicals.