Soybean meal is a byproduct extracted from soybean oil using low-temperature pre pressing extraction method. It has a protein content of 40%~50% and is rich in lysine (2.4%~2.8%) and isoleucine, but its methionine content is relatively low, requiring the addition of methionine to balance the diet.

One working principle

The blade dryer mainly works by conduction, and its main structure includes a W-shaped shell with a jacket. The shell is equipped with paired hollow low-speed rotating hollow shafts, on which several stirring blades are uniformly welded. The jacket and hollow stirring blades are both connected to a heat carrier, thereby achieving dual heating of the material.

The heat carrier is usually fed into the middle of the dryer, passes through the stirred material layer, and is discharged from the other side. Wedge shaped hollow blades are densely arranged on the hollow shaft, and the heat medium flows through these blades through the hollow shaft. This design greatly increases the heat transfer area per unit effective volume, and the temperature range of the heat medium is also very wide, reaching -40~320 ° C. It can be either water vapor or liquid types such as hot water, thermal oil, etc.

Due to the use of indirect conduction heating, the dryer does not carry away heat with air during operation, so all the heat can be used to heat the material, and the heat loss is limited to the heat dissipation from the insulation layer of the device to the environment. In addition, the heat transfer surface of the wedge-shaped blade has a self-cleaning function, and the relative movement between the material particles and the wedge-shaped surface will produce a scrubbing effect, thereby removing the attached material on the wedge-shaped surface and ensuring that the heat transfer surface remains clean at all times.

II feature

1. The material retention time is flexible and adjustable, which is suitable for processing high moisture content materials and obtaining materials with extremely low moisture content.

2. A typical conductive drying method that is energy-saving and environmentally friendly, with a high conductivity coefficient and thermal efficiencystrong.

3. As all the required heat is provided by hollow blades and jackets, the exhaust humidity is reduced, and only a small amount of hot air needs to be supplemented. There is less dust entrainment, and the exhaust treatment is simple, without the need for auxiliary equipment such as dust removal.

4. The blade has self-cleaning function. The design of the blades rotating in opposite directions allows the inclined surfaces of the blades to continuously stir, compress, relax, and propel materials, thereby endowing the page with unique self-cleaning capabilities. This design not only continuously updates the heating surface, but also significantly improves the heat transfer coefficient of the blade dryer, which is superior to other conductive drying methods.

III Components of blade dryer

Feeding system

1 cache bin, 8 cubic meters/16Mn, with 1 set connected to a filter press. The specific size is made according to the outlet of the filter press

2 Conveyor Twister SL273-4KW/16Mn

2、 Host

1. Blade drying host

2 sets of host wall panels with δ 40mm/16Mn and 1 set of internal support bars for the host cylinder to ensure the strength of the equipment

3 sets of main engine cylinder plate δ 14mm/16Mn

4 sets of upper cover δ 8mm/16Mn

5 blade blades, δ 12mm/16Mn, 2 sets of reciprocating

6 spindles with a diameter of 377 * 30/16Mn, 2 sets for drying in Changzhou

7 stop plate δ 5mm/16Mn 1 set Changzhou drying

8 heating sleeves with a diameter of 76 half pipe/1 set of carbon steel half pipe jacket, designed for a pressure of 0.8Mpa

9 sets of external insulation with a thickness of 2mm/carbon steel 1 set of insulation with a thickness of 60mm/external painting

10 rack channel steel, 1 set of welded parts/spray painted treatment

11 feeding ports 16Mn 1 set

12 discharge ports 16Mn 1 set

1 set of 13 vacuum butterfly valves for feeding

3、 Transmission system

1 set of 75kW/6p transmission motor

2 dual output reducers 1:63 1 unit

3-size pulley C-type 4-slot 1 set

4 couplings, 2 sets of 45 # steel

4、 Auxiliary system

1 bearing seat, 4 sets of carbon steel

2 sets of bearings NUP-2245E and NJ-225E

3 bearing seat cover plates, 8 sets of carbon steel

4 sets of carbon steel stuffing boxes and cover plates with 4 sets of reserved nitrogen filling ports

5 packing seals, 4 sets of PTFE disc root seals

6 sets of rotary joint matching/16Mn 2 sets

7 sets of maintenance manholes with a diameter of 400/16Mn

8 vacuum ports with 2 matching

9 dust filters with 2 sets of matching

10 pressure relief valves paired with 1 piece

11 vacuum gauges with 1 set

5、 Recycling and processing system

1 first stage condenser 45 ㎡/stainless steel 304 1 set

2 secondary condensers 25 ㎡/1 set of stainless steel 304

3 acceptance tanks 1m ³/stainless steel 304 1 set

4 primary absorption tower matching/1 set of stainless steel 304

5 secondary absorption tower matching/1 set of stainless steel 304

6. Three stage absorption tower matching/1 set of stainless steel 304

7 water ring vacuum pump SK-12-18.5KW 1 set

1 set of 8 connecting pipelines

9 matching ball valves, 1 set

6、 Control system

1 control cabinet PLC controls 1 set of carbon steel/spray coating

2 sets of temperature measuring thermocouples each

1 set of 3 frequency converters for Zhongchen

4 PLC controllers LS 1 set

5 sets of electrical control systems from Chint