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China Hollow Paddle Dryer - Energy-Saving Solutions from Top Suppliers and Factory for Efficient Drying and Cooling
Principle
There are wedge-shaped hollow paddles in hollow axis, and heat medium is from -40°C to 320°C, the heat medium is steam or hot air or heat conduction oil and so on. Indirectly heating way does not take the energy, so the energy is used for heating material. The energy loss is only heat emission of heat-keeping layer. The transferring heat of wedge-shape side takes cleaning actions. It can clean waste material in wedge-shaped size. The body of wedge-shaped hollow paddle dryer is W shape. There are 2-4 hollow mixing axes in the body. In order to avoid discharging material dust and to collect material solvent, there is a sealed cover on top of body. A baffle is on the outlet of discharging material, in order to keep the height of materials. The heat medium (such as steam or thermal oil) will flow into chamber jacket and hollow mixing axis through rotary join. Hollow mixing axis has different inner structures according to different types of heat medium, which will ensure of best heat transfer efficient.
Applications
Petrochemical Industry
Polyolefin powder, panlite, high and low density polytene, linear low density polytene, linear low density polytene, polyacetal, nylon 6, nylon 66, nylon 12, acerate fiber, polyphonyl sulfide, propeny resin, engineering plastic, polyvincyl chloride, polyving akohol, polystyrene, polypropylene, polyester, polyformaldhyde, styrene acrylonitrile copolymer, polytene and proplylene copolymer.
Environment Protection Industry
Sludge, electroplating sludge, boiler ash, sugar residue, pharmaceutical waste, ash.
Feed Industry
Soy residue, bone forage, distiller's grains, food remnant, apple residue, orange peel, bean dregs, chicken bones forage, fish meat, feed additives, biological residue.
Food Industry
Starch, chocolate, niblet, salt, metatropy starch, drugs.
Chemical Industry
Soda ash, azophoska, kaolin, altamud, white carbon, carbon, ardealite, sodium fluoride oxide, nitrate of lime, agnesium carbonate, cymag, calmogastrin, barium sulfate, hydrofoil, dyestuff, molecular sieve, saponin.
Features
Compact Design & High Transfer Area
Big heat transfer area, compact construction, and less installation area required.
Low Energy Consumption
As the heat flow is indirect, there is no large volume of sweep gas flowing through the unit to carry heat away from the dryer. Taking slurry as an example, the heat requirement can be as low as 1.2kg of steam/kg for evaporating 1kg of water in the hollow paddle dryer.
Self-Cleaning Paddles
Paddles can clean themselves during operation, which significantly improves heat transfer efficiency.
Wide Process Versatility
A wide variety of process problems can be solved by using any kind of heating source. It is especially suitable for drying heat-sensitive materials and high-temperature materials. The normal heat transfer medium can be steam, thermal oil, hot water, as well as cooling water. The dryer supports continuous or batch processing and is widely used across various industries.
Stable Continuous Operation
Due to the special compression and inflation agitation function of the paddle dryer, material grains touch the heat-transfer area thoroughly. Within the axis direction, the temperature, moisture, mixture, and grades of materials are kept within a very small variation range to guarantee the stability of the entire process.
Low Labor & Maintenance Expense
Only 1 person per day is required to operate 1 dryer, saving substantial labor costs. With our intelligent design and precise manufacturing, the equipment is highly reliable, keeping maintenance costs to a minimum.
Technical Parameters
| Model | Drying Area (m²) |
Drying Capacity (H₂O kg/h) |
Motor Power (kw) |
Effective Volume (m³) |
Equipment Dimension LxWxH (mm) |
Shaft Rotary Speed (rpm) |
|---|---|---|---|---|---|---|
| KJG-15 | 15 | 40~220 | 7.5 | 0.8 | 5500x1850x1800 | 5~15 |
| KJG-30 | 30 | 90~450 | 15 | 1.9 | 7500x2400x2200 | 5~15 |
| KJG-50 | 50 | 150~750 | 30 | 3.8 | 8000x2500x2200 | 3~12 |
| KJG-80 | 80 | 240~1200 | 55 | 6.5 | 9000x2700x2500 | 3~12 |
| KJG-100 | 100 | 300~1500 | 75 | 8.7 | 10200x3500x2800 | 2~10 |
| KJG-150 | 150 | 450~2250 | 90 | 13.2 | 12000x3700x2200 | 2~10 |
| KJG-200 | 200 | 600~3000 | 110 | 19.4 | 13000x3900x3800 | 1~6 |
| KJG-250 | 250 | 750~3750 | 110 | 26.2 | 13000x4100x3800 | 1~6 |
| KJG-300 | 300 | 900~4500 | 132 | 34.8 | 13500x4250x4000 | 1~4 |
| KJG-350 | 350 | 1050~5250 | 132 | 42.1 | 13200x4800x4200 | 1~4 |
Product Display
Frequently Asked Questions
What is the working temperature range of the hollow paddle dryer?
The dryer supports heat medium temperatures ranging from -40°C to 320°C, making it highly versatile for various thermal applications.
What heat transfer media can be used with this equipment?
The system can utilize steam, hot air, thermal oil, hot water, or cooling water as the heat transfer medium, depending on the process requirements.
How does the self-cleaning mechanism of the wedge-shaped paddles work?
The heat transfer movement along the wedge-shaped side provides a self-cleaning action, which prevents waste material from sticking to the paddles and maintains optimal heat transfer efficiency.
Why is this dryer considered energy-efficient?
Because it uses indirect heating, there is no large volume of sweep gas carrying heat away. The only energy loss is the minimal heat emission from the outer insulation layer. For example, evaporating 1kg of water in slurry requires as little as 1.2kg of steam.
Is this dryer suitable for processing heat-sensitive materials?
Yes, the hollow paddle dryer is specifically suited for drying heat-sensitive materials and high-temperature materials due to its precise temperature control and uniform heat transfer.
What are the main industrial applications of this dryer?
It is widely used in the petrochemical industry (polyethylene, nylon, resins), environmental protection (sludge, ash), feed industry (soy residue, distiller's grains), food industry (starch, salt, drugs), and chemical industry (soda ash, kaolin, dyestuffs).