Glauber's salt drying production line
Application Client: Shaoxing Huali Fine Chemical Co., Ltd.
Project Category: Chemical Engineering Industry
Product selection: roller scraper dryer
Glauber's salt (Mirabilite) mineral name, commonly known as sodium decahydrate, the chemical formula is Na2SO4‧10H2O (a crystal formed by the combination of sodium sulfate and water molecules), monoclinic system, short columnar crystals, the aggregate is dense or crust It is colorless and transparent, sometimes light yellow or green. Glass gloss; hardness 1.5-2; specific gravity 1.4-1.5; shell-shaped break in other directions; bitter taste. Anhydrous thenardite is called after dehydration.
Glauber's salt is a widely distributed sulfate mineral, which is a crystalline body of sulfate mineral Glauber's salt processed and refined. Can treat diarrhea, normal temperature, digestion, water, slow diarrhea. It is used for gastric belching, diarrhea, indigestion, edema, edema, breast swelling, amenorrhea, and constipation. In arid regions, salt blooms and skins formed by them are often seen. Salt lakes, salt springs and dry salt lakes are places where thenardite is formed.
The company's technical staff has been devoted to the research and development of Glauber's salt special dryers for many years, researching the material form and processing method, and now has the proprietary technology of Glauber's salt drum dryers.
Drum scraper dryer is an internal heating conduction type rotary continuous drying equipment . The rotating drum passes a lower material groove, and a thick material film is adhered. The heat is transmitted to the inner wall of the drum through a pipe, and is transmitted to the outer wall of the drum, and then to the material film, so that the humidity in the material film is evaporated, dehumidified, The moisture-containing material is dried. The dried material is shoveled off the drum by a scraper installed on the surface of the drum, to a screw conveyor placed under the scraper, and the dry material is concentrated and packed by the screw conveyor.
1. High thermal efficiency. Because the heat transfer mechanism of the drum dryer is heat conduction, the heat transfer direction remains the same throughout the operating cycle. Except for the cover heat dissipation and heat radiation loss, the rest of the heat is used for the evaporation of the moisture content of the barrel film, and the thermal efficiency can reach 80%. -90%.
2. Large operation flexibility and wide applicability. Many drying factors of the drum dryer can be adjusted. For example, the concentration of the feed, the thickness of the coating material film, the temperature of the heating medium, and the rotation speed of the drum can all change the drying efficiency of the drum dryer, and many factors are not involved. This brings great convenience to the drum drying operation, which can adapt to the drying of various materials and the requirements of different yields.
3. Short drying time. The drying cycle of materials is generally only 10-300 seconds, which is suitable for heat-sensitive materials. If the drum dryer is set in a vacuum, it can be operated under reduced pressure.
4. Large drying rate. Because the material film applied to the wall of the coating is very thin, generally 0.3-1.5mm, and the direction of heat and mass transfer is the same, the surface of the material film can maintain a strong evaporation of 20-70kg • H2O / m2 • h.