Classification of Spray Dryer and Its Scope of Adaptation (Part I)--Zhe Xiefang, General Manager of Vanguard Drying Co., Ltd.
2022-12-17 07:07:13
According to different needs, spray dryers have several classification methods. According to the gas-liquid flow, there are divided into parallel flow type (forward flow type), counter flow type and mixed flow type; according to the installation method of atomizer, there are upper spray type and lower spray type; according to the system, there is open type, partial circulation. Style and closed type. As we all know, there are a variety of spray drying atomizers, but according to its atomization mechanism, atomizers are divided into centrifugal, pressure and air flow three. Traditionally, people classify spray dryers according to the atomization method, that is, according to the structure of the atomizers. The spray dryers are classified into three types: centrifugal (carousel), pressure (mechanical), and air flow. Type.
1. Centrifugal spray dryers Centrifugal spray dryers rely on the centrifugal force generated by the high-speed rotation of the atomizer disk. The liquid material is thrown horizontally and atomized. The atomization effect depends on the circumferential line speed and the feed rate, and it is also related to the feed fluid. These physical characteristics and other factors. By adding the feed liquid to the disperse disc rotating at a high speed, the liquid is thrown into droplets by centrifugal force and then dispersed in hot air, and the water is evaporated by heat to achieve the purpose of drying.
Centrifugal spray dryer is a drying equipment for emulsion, suspension, paste, solution and other materials. The equipment has the characteristics of fast drying speed and is suitable for the drying of low temperature materials, especially heat sensitive materials. Dry products have good dispersion, fluidity and solubility. The scope of application of this device is:
Polymers and Resins: Polyacrylate, Polycarbonate, Polyethylene, Polystyrene, Polyoxymethylene, Styrene Butadiene Resin, Acrylonitrile Butadiene Resin, Urea Formaldehyde Resin, Polyvinyl Chloride Acetate, Poly Vinyl alcohol and so on.
Organic compounds: aminophenol disulfonic acid, adipic acid, aluminum formate, calcium gluconate, calcium lactate, lysine, glutamic acid, salicylic acid, oxalic acid, potassium citrate, potassium sorbate, sodium benzoate Sodium acetate and so on.
Inorganic compounds: aluminum hydroxide, aluminum chloride, aluminum sulfate, ammonium chloride, ammonium nitrate, barium carbonate, boric acid, calcium carbonate, calcium chloride, graphite, iron oxide, kaolin, and the like.
Detergents and surfactants: alkyl-mimicates, detergency enzymes, dispersants, emulsifiers, synthetic laundry detergents, sodium lauryl sulfate and soap bases.
Medicines: streptomycin sulfate, vitamins, thiamine, tetracycline, ampicillin, dextrin, and herbal extracts.
Carbohydrates, dairy products: glucose, lactose, starch, cheese, skim milk, whole milk and so on.
Drying of rust remover, pesticides, dyes, pigments, ceramics, glass, minerals, etc.
1. Centrifugal spray dryers Centrifugal spray dryers rely on the centrifugal force generated by the high-speed rotation of the atomizer disk. The liquid material is thrown horizontally and atomized. The atomization effect depends on the circumferential line speed and the feed rate, and it is also related to the feed fluid. These physical characteristics and other factors. By adding the feed liquid to the disperse disc rotating at a high speed, the liquid is thrown into droplets by centrifugal force and then dispersed in hot air, and the water is evaporated by heat to achieve the purpose of drying.
Centrifugal spray dryer is a drying equipment for emulsion, suspension, paste, solution and other materials. The equipment has the characteristics of fast drying speed and is suitable for the drying of low temperature materials, especially heat sensitive materials. Dry products have good dispersion, fluidity and solubility. The scope of application of this device is:
Polymers and Resins: Polyacrylate, Polycarbonate, Polyethylene, Polystyrene, Polyoxymethylene, Styrene Butadiene Resin, Acrylonitrile Butadiene Resin, Urea Formaldehyde Resin, Polyvinyl Chloride Acetate, Poly Vinyl alcohol and so on.
Organic compounds: aminophenol disulfonic acid, adipic acid, aluminum formate, calcium gluconate, calcium lactate, lysine, glutamic acid, salicylic acid, oxalic acid, potassium citrate, potassium sorbate, sodium benzoate Sodium acetate and so on.
Inorganic compounds: aluminum hydroxide, aluminum chloride, aluminum sulfate, ammonium chloride, ammonium nitrate, barium carbonate, boric acid, calcium carbonate, calcium chloride, graphite, iron oxide, kaolin, and the like.
Detergents and surfactants: alkyl-mimicates, detergency enzymes, dispersants, emulsifiers, synthetic laundry detergents, sodium lauryl sulfate and soap bases.
Medicines: streptomycin sulfate, vitamins, thiamine, tetracycline, ampicillin, dextrin, and herbal extracts.
Carbohydrates, dairy products: glucose, lactose, starch, cheese, skim milk, whole milk and so on.
Drying of rust remover, pesticides, dyes, pigments, ceramics, glass, minerals, etc.
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