Material characteristics:

Polyvinyl chloride, abbreviated as PVC, is an initiator of vinyl chloride monomer (VCM) in peroxides, azo compounds, and other compounds. PVC is a white powder with an amorphous structure, low branching degree, relative density of about 1.4, glass transition temperature of 77-90 ℃, and begins to decompose at around 170 ℃. It has poor stability to light and heat, and will decompose to produce hydrogen chloride above 100 ℃ or after prolonged exposure to sunlight, which will further catalyze decomposition and cause discoloration. Its physical and mechanical properties also rapidly decrease. In practical applications, stabilizers must be added to improve their stability to heat and light.

Working principle of PVC spray dryer
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 on the top of the tower body, and (rotating) spray into extremely fine mist like liquid beads, which can be dried into finished products in a very short time in parallel with hot air. 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.

PVC spray dryerApplicable materials
chemical industrySodium fluoride (potassium), alkaline dye pigments, dye intermediates, compound fertilizers, formaldehyde silicate, catalysts, sulfuric acid agents, amino acids, white carbon black, etc.
Plastic resin： AB, ABS lotion, urea formaldehyde resin, phenolic resin, urea formaldehyde resin, polyethylene, PVC, etc.
food industryRich fat milk powder, gelatin, cocoa milk powder, milk replacer powder, hunting blood powder, egg white (yellow), etc.
Food and Plants: Oats, chicken juice, coffee, instant tea, flavoring meat, protein, soybean, peanut protein, hydrolysate, etc.
sugarCorn syrup, corn starch, glucose, pectin, maltose, potassium sorbate, etc.
ceramicsAluminum oxide, ceramic tile materials, magnesium oxide, talcum powder, etc.

Performance characteristics of PVC spray dryer
The drying speed is fast, and 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 is only a few seconds, which is particularly suitable for drying heat sensitive materials.
The product has good uniformity, fluidity, and 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.