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Spray Dryer
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LPG High Speed Centrifugal Spray Dryer
Product description
Spray drying is a widely used process in the liquid process forming and drying industry. It is suitable for producing powdery and granular solid products from solution, emulsion, suspension and pasty liquid raw materials. Therefore, spray drying is an ideal process when the particle size distribution, residual moisture content, bulk density and particle shape of the finished product must meet precise standards.
Working principle
After filtering and heating, the air enters the air distributor on the top of the dryer, and the hot air enters the drying chamber evenly in a spiral shape. The feed liquid passes through the high-speed centrifugal atomizer on the top of the tower, (rotating) and sprays into very fine mist droplets, which can be dried into finished products in a very short time in contact 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 evacuated by the fan.
Performance characteristics
◎The drying speed is fast, the surface area of the material liquid is greatly increased after atomization, and 95%-98% of the water can be evaporated in an instant in the hot air flow, and the drying time is only a few seconds, especially 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 and control are convenient. Liquids with a moisture content of 40-60% (up to 90% for special materials) can be dried into powder products at one time, without crushing and screening after drying, reducing production processes and improving product purity. The particle size, bulk density and water content of the product can be adjusted by changing the operating conditions within a certain range, and the control and management are very convenient.
Applicable materials
Chemical industry: Sodium (potassium) fluoride, basic dyes and pigments, dye intermediates, compound fertilizers, formaldehyde silicic acid, catalysts, sulfuric acid agents, amino acids, white carbon black, etc.
Plastic resin: AB, ABS emulsion, urea-formaldehyde resin, phenolic resin, sealant (urea) formaldehyde resin, polyethylene, polyvinyl chloride, etc.
Food industry: rich fat milk powder, protein, cocoa milk powder, milk replacer powder, blood powder, egg white (yellow), etc.
Food and plants: oats, chicken juice, coffee, instant tea, seasoned meat, protein, soybean, peanut protein, hydrolyzate, etc.
Sugars: corn syrup, corn starch, glucose, pectin, maltose, potassium sorbate, etc.
Ceramics: alumina, ceramic tile materials, magnesia, talcum powder, etc. -
YPG series pressure spray (cooling) dryer
Product introduction
This unit is a device that can complete drying and granulation at the same time. According to the process requirements, the pressure, flow rate and the size of the spray hole of the material liquid pump can be adjusted to obtain the required spherical particles in a certain size ratio.
Working principle
The working process of this unit is that the material liquid is input through the diaphragm pump under high pressure, spraying mist droplets, and then descending in parallel with the hot air, most of the powder particles are collected by the discharge port at the bottom of the tower, and the waste gas and its tiny powder are separated by a cyclone The exhaust gas is discharged by the exhaust fan, and the powder is collected by the pollination cylinder at the lower end of the cyclone separator. The outlet of the fan can also be equipped with a secondary dust removal device, and the recovery rate is above 96-98%.
Performance characteristics
◎The drying speed is fast, the surface area of the material liquid is greatly increased after atomization, and 95%-98% of the water can be evaporated in an instant in the hot air flow, and the drying time is only ten to tens of seconds. Especially suitable for drying heat-sensitive materials.
◎All products are spherical particles with uniform particle size, good fluidity, good solubility, high purity and good quality.
◎Wide range of application. According to the characteristics of the material, it can be dried with hot air or granulated with cold air. It has strong adaptability to materials.
◎Simple and stable operation, convenient control, easy to realize automatic operation.
Suitable materials
for spray drying:
◎Chemical industry: Catalysts, resins, synthetic washing powder, oils, ammonium sulfate, dyes, dye intermediates, white carbon black, graphite, ammonium phosphate, etc.
◎Food: Amino acids and their analogs, seasonings, proteins, starches, dairy products, coffee extracts, fish meal, meat essence, etc.
◎Pharmaceuticals: Chinese patent medicines, pesticides, antibiotics, pharmaceutical granules, etc.
◎Ceramics: magnesium oxide, china clay, various metal oxides, dolomite, etc.
◎Spray granulation: various fertilizers, alumina, ceramic powder, pharmaceuticals, heavy metal superhard steel, chemical fertilizers, granular washing powder, Chinese patent medicines.
◎Spray cooling granulation: amino fatty acid, paraffin, glyceride, tallow, etc. It is often used in spray crystallization, spray concentration, spray reaction, etc. -
ZLPG series traditional Chinese medicine extract spray dryer
Product introduction
The machine adopts a fully enclosed form, all parts are made of stainless steel, equipped with three-stage purification device, and the filtered air meets the requirements of 100,000 grades. The cylinder body and the top are equipped with a cold wall device to make the wall temperature <80°C, and the drying tower is equipped with an air brush sweeping device. The traditional Chinese medicine extract powder dried by this machine will not appear scorching and deterioration, greatly increase the powder collection rate (above 95%), and will not produce drug mixing and wall sticking.
Working principle
The high-speed centrifugal spray device for traditional Chinese medicine extract is the application of centrifugal spray drying technology in the drying of specific materials. Drying device for finished products.
Performance characteristics
◎The tower body has a cold air jacket;
◎The tower body is equipped with an automatic vibration device;
◎The tower body and pipelines are equipped with quick-opening cleaning holes and drain holes;
◎Can be equipped with automatic control constant temperature feeding tank;
◎Can be equipped with manual high pressure Washing tower comes with accessories; ◎ The part in
contact with the material is made of stainless steel; (or all stainless steel); Automatic control and continuous device. ◎Air sweeping device can be equipped. technical specifications -
High speed centrifugal spray dryer
The spray dryer is a drying process in which raw materials are dispersed into droplets by atomizer, and hot air (or other gases) is directly contacted with the droplets to obtain powdered and granular products. After being filtered and heated, the air enters into the hot air distributor on the top of the dryer, and the hot air enters the drying chamber in a spiral shape. The feed liquid passes through the high-speed centrifugal atomizer on the top of the tower body, and the rotating spray forms extremely fine droplets. The droplets contact the hot air, mix and flow at the same time to conduct heat and mass transfer, and can be dried into finished products in a very short time. The flow direction of the droplets and hot air has concurrent flow, countercurrent flow and mixed flow, with different contact modes, It has a great influence on the temperature distribution in the drying tower, the movement track of the fog point (or particle), the residence time of particles in the drying tower and the product properties.
Most of the finished products are exported from the bottom of the drying tower, some fine powder is entrained in the exhaust gas and exported through the cyclone separator, and the exhaust gas is discharged by the fan. -
Spray dryer for Chinese herbal extract
The tower body of ZLPG series Chinese medicine extract spray dryer is equipped with cold air jacket. The tower body is equipped with automatic rapping device. The tower body and pipeline are equipped with quick-opening cleaning holes and blowdown holes. It can be equipped with automatic control thermostatic feeding tank. The part in contact with the material is made of stainless steel. (or made of all stainless steel) materials are collected by two-stage cyclone dust collector, or primary cyclone dust collector and wet dust collector. Automatic control and continuous device for inlet air temperature. It can be equipped with a scavenging device.
The machine is fully enclosed, and all parts are made of stainless steel. It is equipped with a three-stage purification device, and the filtered air reaches the requirements of 100000. The cylinder and the top are equipped with a cold wall device to keep the wall temperature below 80 ℃ . The drying tower is equipped with an air brush tower cleaning device. The traditional Chinese medicine extract powder dried by the machine will not appear coking and deterioration, greatly increasing the powder collection rate (more than 95%), and will not produce drug mixing and wall sticking.