High-Efficiency PLG Series Continuous Plate Dryer - China Suppliers & Factory Solutions for Various Industries
Principle
Wet materials are fed continuously to the top drying layer in the dryer. They will be turned and stirred continuously by harrows when the harrow’s arm rotates, the material flows through the surface of the drying plate along the exponential helical line. On the small drying plate the material will be moved to its exterior edge and drop down to the exterior edge of the large drying plate underneath, and will then be moved inward and drop down from its central hole to the small drying plate on the next layer. Both small and large drying plates are arranged alternately so as materials can go through the whole dryer continuously. The heating media, which could be saturated steam, hot water or thermal oil will be led into drying plates from one end to other end of the dryer. The dried product will drop from the last layer of the drying plate to the bottom layer of the body, and will be moved by harrows to the discharge outlet. The moisture exhausts from materials and will be removed from the moist discharge outlet on the top cover, or sucked out by the vacuum pump on the top cover for vacuum-type plate dryer. The dried product discharged from the bottom layer can be packed directly. The drying capability can be raised up if equipped with supplementary devices such as finned heater, condenser for solvent recovery, bag dust filter, return and mix mechanism for dried materials and suction fan etc. solvent in those paste state and heat sensitive materials can be easily recovered, and thermal decomposition and reaction can be also carried out.
Applications
Processes: Drying, heat decomposition, combustion, cooling, reaction, and sublimation.
Target Materials:
- Organic chemicals
- Mineral chemicals
- Pharmaceutical and foodstuff
- Feed and fertilizer
Features
Easy control, wide application
Regulate thickness of materials, rotating speed of main shaft, number of rake arm, style and sizes of harrows achieve best drying process.
Each layer of drying plate can be fed with hot or cold media individually to heat or cold materials and make temperature control accurate and easy.
Stay time of materials can be accurately adjusted.
Single flowing direction of materials without return flowing and mixing, uniform drying and stable quality, no re-mixing is required.
Easy and simple operation
Start and stop of dryer is quite simple.
After material feeding is stopped, they can be easily discharged out of the dryer by harrows.
Careful cleaning and observation can be carried inside the equipment through large-scale viewing window.
Low energy consumption
Thin layer of materials, low speed of main shaft, small power and energy required for conveying system of materials.
Dry by conducting heat so it has high heating efficiency and low energy consumption.
Good operation environment, solvent recovery & safety
Normal pressure type: as low speed of air flow inside the equipment and moisture being high in upper part and low in lower part, dust powder could not float to the equipment, so there is almost no dust powder in tail gas discharged from the moist discharge outlet on the top.
Closed type: equipped with solvent recovery device that can recover organic solvent easily from moist-carrier gas. The solvent recovery device has simple structure and high recovery rate, and nitrogen can be used as moist-carrier gas in closed circulation in order for safe operation. Especially suitable for drying of flammable, explosive and poisonous materials.
Vacuum type: if the plate dryer is operating under vacuum state, it is particularly suitable for drying heat sensitive materials.
Easy installation and small occupying area
As the dryer is in a whole for delivery, it is quite easy to install and fix at site only by hoisting.
As drying plates being arranged by layers and installed vertically, it takes a small occupying area though drying area is large.
Technical Parameters
| Model | Diameter (mm) | High (mm) | Area of dry (㎡) | Power (kw) |
|---|---|---|---|---|
| 1200/4 | Ø1865 | 2877 | 3.3 | 1.1 |
| 1200/8 | 3717 | 6.6 | 1.5 | |
| 1200/10 | 4137 | 8.2 | ||
| 1200/12 | 4557 | 9.9 | 2.2 | |
| 1500/6 | Ø2166 | 3327 | 8.0 | |
| 1500/10 | 4167 | 13.4 | ||
| 1500/12 | 4587 | 16.1 | 3.0 | |
| 1500/16 | 5427 | 21.5 | ||
| 2200/6 | Ø2820 | 3781 | 18.5 | |
| 2200/12 | 5041 | 36.9 | ||
| 2200/14 | 5461 | 43.1 | 5.5 | |
| 2200/20 | 6721 | 61.6 | ||
| 2200/22 | 7141 | 67.7 | 11 | |
| 2200/26 | 7981 | 80.0 | ||
| 2500/6 | Ø3115 | 3981 | 26.3 | 4 |
| 2500/12 | 5241 | 52.5 | 5.5 | |
| 2500/14 | 5661 | 61.3 | 7.5 | |
| 2500/18 | 6501 | 78.8 | 11 | |
| 2500/24 | 7761 | 105 | 15 | |
| 3000/8 | Ø3768 | 5143 | 48 | 11 |
| 3000/12 | 6143 | 72 | ||
| 3000/18 | 7643 | 108 | 15 | |
| 3000/22 | 8793 | 132 | 18.5 | |
| 3000/28 | 10293 | 168 |
Product Display
Frequently Asked Questions
How does the plate dryer continuous drying process work?
Wet materials are fed continuously to the top drying layer and stirred by rotating harrows. They flow along an exponential helical line across alternating large and small drying plates, dropping down layer by layer while heating media inside the plates conducts heat to dry them continuously.
What types of heating media can be used in this plate dryer?
The dryer is highly adaptable and can utilize saturated steam, hot water, or thermal oil led into the drying plates to provide the necessary heat conduction.
Is this plate dryer suitable for heat-sensitive or toxic materials?
Yes. The vacuum-type plate dryer is ideal for heat-sensitive materials. For flammable, explosive, or toxic materials, the closed-type dryer uses nitrogen as a carrier gas in a closed circulation loop to ensure safe operation.
How does the system achieve low energy consumption?
It utilizes a thin material layer, low main shaft speeds, and low conveying power. Because it dries materials directly through heat conduction rather than hot air flow, it achieves very high thermal efficiency.
Can organic solvents be recovered during the drying process?
Yes, closed-type plate dryers can be equipped with a simple yet high-rate solvent recovery device to easily recover organic solvents from the moist-carrier gas.
What are the main installation requirements for this equipment?
The dryer is delivered as a fully assembled single unit, requiring only simple hoisting to install and fix at the site. Its vertical, layered design ensures it occupies minimal floor space.