First, the process conditions
1. Material: Polyacrylamide particles
2. Particle size: 5-6mm (minimum 0.01-0.02mm)
 3. Feeding temperature: ≥70 ℃ (calculated according to 70 ℃)
4. The material temperature: ≤ 25 ℃ (according to 25 ℃)
 5. Capacity: 1500Kg / h
6. The proportion of accumulation: 1.1 - 1.2 grams / cubic centimeter
7. Refrigerant: -5 ℃ (frozen brine)
Recycling: host + bag filter
9. Equipment Material: Material Contact 304, the remaining A3 steel spray paint
 10. Installation: indoor
11. Power: 380V 50HZ
 12. Environment: 20 ℃ 760mmHg φ = 80%
13. Installation: indoor
14. Power: 380V 50HZ
15. Environment: 20 ℃ 760mmHg φ = 80%
Process calculation: Feed temperature: ~ 70 ℃; After cooling the discharge temperature: 25 ℃
Frozen brine imports: -5 ℃, frozen brine exports: 5-10 ℃
   Material from 70 ℃ to 25 ℃ to reduce the heat released:
(The specific heat of the material is 0.4 kcal / kg • ℃) Q1 = 3000x0.4x (70-25) = 54000kcal / h The efficiency is taken as 80%, then Q1 = 67500kcal / h, h
Frozen brine flow rate: 67500 ÷ 1 ÷ 15 = 4500Kg / h
 Cooling disc area calculation, Q = KA △ t
Calculated: △ t = 43.2 ℃ K take 40
Calculated: A = 39m2 Actually take 43m2
 Check the dwell time: According to experience, the dwell time when the material is dry can not be less than 20 minutes,
 Take the proportion of material accumulation: 1200Kg / m3.
Shop thickness to take 10 - 20mm S = 3000 / (1200x0.02x3) = 41.6 square,
Meet the design requirements
 Proposed to use PLG1500--16-type plate-type continuous cooling machine to meet the requirements.
 
Disk cooler works:
The hot material is continuously added to the first layer plate of the cooler from the feeder and the rake arm with the rake leaves makes the rotary motion so that the rake leaf continuously inverts the material and the material flows along the exponential helix through the surface of the cooling plate. Small pieces of material moved to the outer edge and fell to the outer edge of the broader market at the outer edge of the material in the market to move inside and fall into the next layer from the small cap, the size of the disk alternately arranged, the material To continuously flow through the entire cooling machine, the hollow cooling plate into the frozen brine, the refrigerant medium from one end into the other end of the export, cooling the material from the last layer of plate fell to the bottom of the shell, and finally rake leaves move to the mouth Discharged directly after packaging. In order to speed up the cooling rate, the top of the exhaust fan.

• 
  Disc cooler