Selection of PAC drying (LPG high-speed centrifugal spray dryer)

Material Description:

A new type of water purification material, inorganic polymer coagulant, abbreviated as poly aluminum chloride (PAC), is a water-soluble inorganic polymer between AlCI3 and Al (OH) 3. Its chemical formula is [Al2 (OH) nCl6-nLm], where m represents the degree of polymerization and n represents the neutrality of PAC products. Among the m products, n=1-5 are high charge polymer cyclic chains with Keggin structure, which have high electrical neutralization and bridging effects on colloids and particles in water, and can strongly remove trace toxins and heavy metal ions, with stable properties. The inspection method can be carried out according to the international GB 15892-2003 standard. Due to the bridging effect of hydroxide ions and the polymerization effect of multivalent anions, the produced polyaluminum chloride is an inorganic polymer water treatment agent with a relatively large molecular weight and high charge.

Product name: LPG series high-speed centrifugal spray dryer

Overview:

Spray drying is the most widely used process in liquid forming and drying industries. It is most suitable for generating powder and granular solid products from solution, lotion, suspension and paste liquid raw materials. Therefore, spray drying is a very ideal process when the particle size distribution, residual moisture content, bulk density and particle shape of the finished product must meet accurate standards.

Principle:

After filtering and heating, the air enters the top air distributor of the dryer, and the hot air enters the drying chamber uniformly in a spiral shape. The feed liquid passes through the high-speed centrifugal atomizer at the top of the tower body, and (rotating) spray into extremely fine droplets, which flow in parallel with hot air and can be dried into finished products in a very short time. The finished product is continuously output from the bottom of the drying tower and the cyclone separator, and the exhaust gas is discharged by the fan.

Features:

Fast drying speed, the surface area of the material liquid is greatly increased after atomization. In the hot air flow, 95% -98% of the water can be evaporated instantly, and the drying time only takes a few seconds, making it particularly suitable for drying heat sensitive materials.

The product has good uniformity, fluidity, solubility, high purity, and good quality.

The production process is simplified and the operation control is convenient. For liquids with a moisture content of 40-60% (up to 90% for special materials), they can be dried into powder products in one go without the need for crushing and screening, reducing production processes and improving product purity. The particle size, bulk density, and moisture content of the product can be adjusted within a certain range by changing the operating conditions, making control and management very convenient.

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