Large Capacity Centrifugal Spray Dryer Drying Equipment for Milk
Whey Protein
High Speed Centrifugal Spray Dryer
Introduction
The spray dryer is one of the continuous atmospheric dryers. The
liquid material is sprayed with a special device to form a mist and
is dried in contact with hot air. For the drying of some
heat-sensitive liquids, suspensions, and viscous liquids, such as
milk, eggs, tannins, and drugs. Also used for drying fuels,
intermediates, soap powder, and inorganic salts.
Working Principle
The air is filtered and heated into the top of the dryer air
distributor, hot air into the spiral evenly into the drying
chamber. The material liquid is sprayed into a finely atomized
liquid droplet through the high-speed centrifugal nebulizer at the
top of the tower body, and can be contacted with the hot air in a
very short time and can be dried into finished products. The
finished product is continuously discharged from the bottom of the
drying tower and the cyclone, and the exhaust gas is drained by the
draft fan.
Technical parameters
| Specification | LPG-5 | LPG-25 | LPG-50 | LPG-100 | LPG-150 |
| Inlet temp. (℃) | 140-350 |
| Outlet temp. (℃) | 80-90 |
| Spray form | High speed centrifugal atomization |
| Water evaporation(kg/h) | 5 | 25 | 50 | 100 | 150 |
| Atomizer speed(rpm) | 25000 | 22000 | 21500 | 18000 |
| Diameter of atomizing disk(mm) | 50 | 120 | 150 |
| Electric heating power(kw) | 9.6 | 31.5 | 60 | 81 | 99 |
| Recovery rate of dry powder (%) | 99 |
| Occupied length(m) | 1.6 | 4 | 4.5 | 5.2 | 7 |
| Occupied width (m) | 1.1 | 2.7 | 2.8 | 3.5 | 5.5 |
| Height of Tower(m) | 1.75 | 4.5 | 5.5 | 6.7 | 7.2 |
| Lifting height of nozzle(m) | | 2.5 | 2.5 | 3.2 | 3.2 |
Product Features
High-speed drying: the surface area of liquid material is greatly
increased after atomization, achieving instantaneous evaporation of
95% -98% water in the hot air flow, drying time only takes a few
seconds, especially for heat-sensitive materials
Products achieve good uniformity, mobility, and solubility, and
also achieve purity, good quality. The production process is
simplified and the operation control is convenient. For liquid
materials with the moisture content of 40-60% (special materials up
to 90%) can be dried into powder products just with one time, do
not need grinding and screening after drying, reduce production
processes and improve product purity. The product size, bulk
density, moisture, in a certain range can be adjusted by changing
operating conditions, control and management are very convenient.
The air is filtered and heated into the top air distributor of the
dryer, and the hot air enters the drying chamber evenly in a spiral
fashion. The material liquid is sprayed into a finely atomized
liquid droplet through the high-speed centrifugal nebulizer at the
top of the tower body, and can be contacted with the hot air in a
very short time and can be dried into finished products. The
finished product is continuously discharged from the bottom of the
drying tower and the cyclone, and the exhaust gas is drained by the
draft fan.
Application
Food and plants: oats, chicken juice, coffee, instant tea,
seasoning spices meat, protein, soybeans, peanut protein,
hydrolysates and so on.
Carbohydrates: corn steep liquor, corn starch, glucose, pectin,
maltose, potassium sorbate, and the like. Chemical industry:
battery raw materials, basic dye pigments, dye intermediates,
fertilizer, formaldehyde silicic acid, catalysts, agents, amino
acids, silica, and so on.
Ceramics: alumina, ceramic tile materials, magnesium oxide, talcum
powder and so on.
