High speed centrifugal spray dryer
At present, the high-speed centrifugal spray dryer device is one of the most widely used dryers, and the high-speed centrifugal spray dryer is a dryer for processing solutions, suspensions or slurry-like materials. It can be directly dried from liquid to powder, which is the biggest advantage of spray drying equipment. Its shortcomings are low thermal efficiency, bulky volume, and high investment.
High-speed centrifugal spray dryers are widely used in chemical, light industry, food and other industries because of their special advantages that they can directly obtain powdery products with uniform ingredients from a solution or suspension system. In the chemical industry, they are used in the dye industry.
The working principle of the high-speed centrifugal spray dryer device is: the material is sprayed into droplets and dispersed in the hot air by spraying, and the material and the hot air are in contact with each other in a co-current, counter-current or mixed flow way, so that the moisture can quickly evaporate and achieve drying. purpose.
Features of high-speed centrifugal spray dryer:
1. The drying time is only 10-30 seconds. Due to the short drying time, the product can maintain uniform fine particles (the product has good dispersibility, fluidity and solubility).
2. Flexible control. For the product's grain size, bulk density, moisture, product properties (no dust, fluidity, wettability, instant dissolution), the operating conditions can be adjusted within a certain range, and the control and management are convenient.
Good drying effect. 40%-60% (some materials up to 90%) of the liquid can be dried into a powdery product once, without crushing and screening.
3. The finished product is of good quality. It can retain the color, fragrance, taste, and other biological activities of the material; the moisture content of the final product.
4. Wide range of application. Solutions, emulsions, and suspensions can even be used for liquid materials with viscosity.
5. Simple operation. The high-speed centrifugal spray dryer has simple operation, low failure rate and low maintenance cost.
Applicable materials of high-speed centrifugal spray dryer:
Chemical industry: resins, organic catalysts, oils, ammonium sulfate, dyes, synthetic washing powder, white carbon black, graphite, dye intermediates, ammonium phosphate, etc. Food industry: seasonings, amino acids and similar dairy products, coffee extracts, protein, starch, fish meal, meat essence, etc.
Pharmaceutical industry: antibiotics, Chinese patent medicines, pesticides, pharmaceutical granules, etc.
Ceramic industry: porcelain clay, various metal oxides, magnesium oxide, dolomite, etc.
Spray granulation: all kinds of fertilizer, alumina, ceramic powder, pharmaceutical, heavy metal superhard steel, chemical fertilizer, granular washing powder, Chinese patent medicine, etc. Spray cooling granulation: spray cooling granulation: amino fatty acid, paraffin wax, glycerate, tallow, etc.
Others: spray crystallization, spray concentration, spray reaction, etc. are also often used in centrifugal spray dryers.
