Description
Polymerized aluminum chloride, an emerging water purification material, inorganic polymer coagulant, referred to as polyaluminum, abbreviated as PAC (poly aluminum chloride), which is a water-soluble inorganic polymer between AlCI3 and Al(OH)3, the chemical formula is [Al2(OH)nCl6-nLm], where m represents the degree of polymerization, n represents the degree of neutrality of PAC products. m products, n=1-5 are highly charged polymeric cyclic chain bodies with Keggin structure, with high degree of electrical neutralization and bridging of colloids and particles in water. It represents the degree of polymerization and n represents the degree of neutrality of PAC products. m product, n=1-5 is a highly charged polymerized cyclic chain body with Keggin structure, which has a high degree of electric neutralization and bridging effect on colloids and particles in the water and strongly removes microtoxins and heavy metal ions, and has stable properties.
The equipment has
Spray drying is a widely used process in the liquid process forming and drying industry. It is suitable for generating powdery and granular solid products from solutions, emulsions, suspensions and pasty liquid raw materials. Spray drying is therefore an ideal process when the particle size distribution, residual moisture content, bulk density and particle shape of the finished product must meet precise criteria.
Working Principle
The air is filtered and heated, and enters into the air distributor at the top of the dryer, and the hot air enters into the drying chamber in a spiral shape evenly. The material liquid is sprayed into very fine mist liquid beads by the high-speed centrifugal atomizer at the top of the tower (rotating), and can be dried into finished products in a very short time by contacting with the hot air in parallel flow. The finished product is continuously output from the bottom of the drying tower and the cyclone separator, and the exhaust gas is exhausted by the induced draft fan.
Advantages
Centrifugal spray drying equipment has good uniformity, fluidity and solubility, high product purity and good quality. 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, drying without crushing and screening, reduce production processes, improve product purity. The product particle size, bulk density, moisture, within a certain range can be adjusted by changing the operating conditions, control and management are very convenient.
1, fast drying speed, the material by the atomization of the liquid surface area greatly increased in the hot air stream, can instantly evaporate 95% -98% of the water. Finish drying time is only 5-15 seconds, with instantaneous drying characteristics.
2、Materials in a short period of time to complete the drying process, adapted to the drying of heat-sensitive materials, to maintain the material color, aroma, taste.
3、Special wind separating device reduces the resistance of the equipment and effectively provides the dryer to deal with the wind.
4、Product dispersibility, mobility, solubility is good, the product particle size, looseness, moisture can be adjusted within a certain range.
5, the production process is simplified, suitable for continuous control of production, moisture content of 40-90% of the liquid, a drying into powder, reduce crushing, screening and other processes to improve product purity.
