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Mirror Polished Commercial Spray Dryer , Industrial Pilot Scale Spray Dryer
Overview
In general, according to the high speed centrifugal spray dryer exhaust tower exhaust form, it can be an exhaust air drying tower on the tower body, an exhaust drying tower in the lower part of the tower body, and a large curved pipe exhaust drying tower in the bottom of the tower cone. According to the powder collection form of the tower, it is divided into eccentric bag type dust removal, circumferential bag type dust removal, single (two) level cyclone dust removal, single stage bag type dust removal, cyclone bag type two-stage dust removal, cyclone bag wet type two-stage dust removal spray drying tower. . The eccentric bag type dust removing and the circumferential bag type dust removing drying tower are in the form of being connected with the tower body. At the same time, the drying tower can also be equipped with systems or equipment such as fine powder agglomeration, multi-jet agglomeration granulation, finished wind transmission and vibrating fluidized bed. In order to improve the safety of equipment operation, the explosion-proof door and the tower and the exhaust air temperature ultra-high temperature alarm device are installed in the tower body. Automatic control systems are available for demanding users. According to the drying characteristics, evaporation amount, heat source, etc. of different materials, the design conforms to the dry process of the product.
First, according to the direction of hot air and material movement,
the lower exhaust tower is a downstream drying method, and the
upper exhaust tower is a mixed flow drying change, which is the
biggest difference between the two. Therefore, the superiority of
the pressure type upper exhaust spray drying tower than the lower
exhaust tower is:
1) Energy conservation: Since the return air chamber of the upper
exhaust tower is the high negative pressure zone of the tower in
the upper part, during the evaporation process, the high negative
pressure evaporation reduces the evaporation temperature, and the
temperature reduction saves the steam, saving the steam. energy.
The upper exhaust tower evaporates 1kg of water, which only
consumes 2.8-3.0kg of steam, saving 8-10% of steam;
2) Saving construction investment: The same type of equipment, the
upper exhaust tower is 5~7m lower than the lower wind tower.
3) Good product quality: the particles of the upper exhaust tower
powder are uniform, and the larger particles and smaller particles
are less. Since the dry zone of the powder is a high negative
pressure zone, the drying of the powder is low-temperature drying,
so that the various vitamins in the powder are less damaged and the
protein is not denatured. In addition, since the heating time of
the powder in the drying process is relatively short in the high
temperature zone relative to the lower exhaust tower, the color,
the granularity and the brewing property are better.
4) Convenient cleaning: the tower body has a simple structure and
is easy to manufacture. Since the column and the cone of the tower
are directly connected, the connection of each angle is smooth and
excessive, and there is no dead angle when cleaning. After opening
the tower door, each part in contact with the dust can be
conveniently cleaned.
5) Reduce the amount of sewage and save energy and reduce labor
intensity: the annular wind curtain cannot be formed in the lower
exhaust tower, the tower wall is heavily suspended, and the tower
is brushed every day. The brush tower increases the loss of
material and wastes a lot of hot water. Not only does it consume
energy, it also increases the amount of sewage. The drying of the
upper exhaust tower is mixed flow drying. The flow of the droplets
is a downstream flow during the constant-speed drying period, and
the deceleration period is a mixed-flow exhaust, and the wind
reaches the bottom to form a 180-degree large revolution, so that
the material and air in the drying are separated, and the wind is
separated. In the rapid upward movement, a large annular air
curtain is formed on the tower wall. When it is dry, an annular air
curtain is formed in the tower to control the phenomenon of powder
hanging on the tower wall. The tower can be cleaned for more than
ten days, thus reducing the amount of sewage and saving. Energy,
while reducing the labor intensity of workers.
Spray dryer TECHNICAL PARAMETERS spray dryer
Spray dryer Parameter | LPG -5 | LPG -10 | LPG -15 | LPG -20 | LPG -25 | LPG -50 | LPG -100 | LPG -150 | LPG -200 | LPG -500 | LPG -800 | LPG -1000 | LPG -2000 | LPG -3000 | LPG -4500 | LPG -6500 |
Inlet temperature(°C) | 140-350automaticallycontrolled | |||||||||||||||
Outlet temperature(°C) | 80-90 | |||||||||||||||
Water evaporation capacity(kg/h) | 5 | 10 | 15 | 20 | 25 | 50 | 100 | 150 | 200 | 500 | 800 | 1000 | 200 | 3000 | 4500 | 6500 |
Diameter of atomizing tray (rpm) | 50 | 80 | 80 | 120 | 150 | 180-210 | Decidedin accordance witn the requirementsof processs | |||||||||
Max Electric heating power(kw) | 12 | 24 | 36 | 45 | 46 | 63 | 81 | 99 | ||||||||
Dried powder restoring rate(%) | ≥95 | |||||||||||||||
Length of convered area (m) | 1.6 | 2.7 | 3 | 3.5 | 4 | 4.5 | 5.2 | 7 | 7.5 | 12.5 | 13.5 | 14.5 | Decided in accordance the flow chart, | |||
Width of convered area (m) | 1.1 | 1.5 | 1.8 | 2 | 2.7 | 2.8 | 3.5 | 5.5 | 6 | 8 | 12 | 14 | Condition of filed and requirements |