Features of FANQUN Vacuum Paddle Dryer
FANQUN’s vacuum paddle dryer features an indirect heating system with two heat sources, enhancing drying efficiency while also preserving active ingredients. Please feel free to contact us for purchasing!
- Suitable for heat-sensitive materials due to the indirect heating process and low processing temperature of the vacuum paddle dryer;
- The vacuum paddle dryer features high thermal efficiency up to 85% or higher;
- Ensure uniform and consistent products by continuous agitation and renew heating surfaces;
- The structure of FANQUN’s vacuum paddle dryer is tight to achieve compact footprint;
- All of FANQUN’s vacuum paddle dryers have obtained many certifications such as ISO 9001.
JFQ-YQJ-ZK Vacuum Paddle Dryer
As an indirectly heated piece of equipment, the horizontal disc paddle dryer has been applied in the chemical industry, food industry, feed industry, dye industry, and sludge treatment for several decades. At present, the technology has become quite mature and holds a very high market share in the international market.
The horizontal disc paddle dryer is used for the indirect heating and cooling of pasty, granular, powdered, and slurry materials. The disc-type paddles inside the equipment feature a large heat transfer area and high heat transfer efficiency.
The main body of the horizontal disc paddle dryer consists of a cylindrical shell and a set of discs running through the center. The disc assembly is hollow, allowing the heating medium to flow through it and transfer heat indirectly to the material through the discs. The material passes between the discs and the shell, receives heat transferred from the discs, and evaporates moisture. The water vapor generated from moisture evaporation is carried out of the dryer by hot air.
The horizontal disc paddle dryer features low dust generation during operation and high safety performance. Each disc transfers heat on both the left and right sides, providing a large heat transfer area. The structure is compact, the overall dimensions are small, auxiliary equipment is minimal, and the system is simple. As the material inside the dryer is wet, fixed long scrapers are installed on the inner wall of the shell to prevent material from sticking to the discs. These scrapers extend into the gaps between the discs, serving to agitate the sludge and clean the disc surfaces. Low-temperature heat sources (≤180 °C) are used for heating, ensuring that material on the discs will not overheat during shutdown. Only a small amount of auxiliary air is required, resulting in compact exhaust gas treatment equipment. The disc dryer can be used for both semi-drying processes and full drying processes. Various heat transfer media such as steam and thermal oil can be used, providing a very good on-site environment. It features low power consumption, stable operation, low noise, and low labor requirements.
Features of JFQ-YQJ-ZK Vacuum Paddle Dryer
- Low Energy Consumption: the dryer heats materials through the paddles, shaft, and inner wall. Due to indirect heating, heat loss is minimal;
- Low Investment Cost and Small Footprint: a large heat transfer coefficient and high thermal efficiency shorten drying time, reduce equipment size, and decrease building area and space;
- Wide Range of Material Applications: it can process both heat-sensitive materials and high-temperature-resistant materials. Different heating media can be selected according to different materials. Common heating media include steam, thermal oil, hot water, and cold water. Continuous operation or batch operation is possible, with a wide range of applications;
- Low Environmental Pollution: air is used to carry away water vapor, resulting in minimal dust entrainment and easy exhaust gas treatment. For polluted materials or materials requiring solvent recovery, closed-loop circulation systems or vacuum disc dryers can be used;
- Low Operating Cost: under normal operation, only one operator is required. Low rotational speed and reasonable structure result in minimal wear and low maintenance costs.
Application of JFQ-YQJ-ZK Vacuum Paddle Dryer
- Organic Chemical Products:Polyvinyl chloride resin, polytetrafluoroethylene resin, maleic acid, anthraquinone, nitroanthraquinone, p-aminophenol, melamine, cyanuric acid, p-aminobenzenesulfonic acid, antioxidant 168, phenolic compounds, stearates, aniline, nitroaniline, dipentaerythritol, chlorinated paraffin, calcium formate, triethylenediamine, EDTA, rubber accelerators, sodium benzenesulfinate, isophthalic acid, sodium dimethyl pentasulfonate, thiourea, oil-soluble aniline black dyes, acid black dyes, indigo, and other organic chemical raw materials and intermediates.
- Inorganic Chemical Products:Light calcium carbonate, activated calcium carbonate, nano-scale ultrafine calcium carbonate, magnesium carbonate, sulfur concentrate, pyrite, copper-nickel ore, aluminum hydroxide, lime black, strontium carbonate, barium carbonate, potassium carbonate, lithopone, sodium dithionite, silica fume, barium sulfate, potassium sulfate, microsphere catalysts, magnesium hydroxide, copper sulfate, nickel sulfate, nickel amide, sodium molybdate, sodium chloride, cryolite, red iron oxide, nickel oxalate, cobalt oxalate, black iron oxide, lithium hydroxide, nickel hydroxide, zirconium hydroxide, calcium phosphate, sulfur, etc.
- Pharmaceuticals and Food:Ampicillin, Deng salt, L-phenylglycine and intermediates, cefamandole, ceftriaxone, metamizole, cimetidine, vitamin B12, vitamin C, pharmaceutical-grade salt, pharmaceutical aluminum hydroxide, pharmaceutical magnesium metasilicate, caffeine, tea, flower extracts, ginkgo leaf, cocoa powder, starch, corn germ, pharmaceutical raw materials and intermediates.
- Feed and Fertilizers:Potassium carbonate, bio-potassium fertilizer, protein feed, chlortetracycline for feed, mycelium, bran, distillers’ grains, grains, seeds, herbicides, cellulose, dicalcium phosphate for feed.
High-safety level. Heat-sensitivity for raw material. Low temperature vacuum drying.
Long service life. Easy to operate and control. High-efficiency product machine.
Made from stainless steel material for sanitary standard. Low temperature and high efficiency.
Versatile, and handle high humidity / viscous materials. High efficiency and low cost. Ideal for liquid, paste and etc.
Enery-saving machines. Good heat transfer for both heating and cold cooling of the product. High-thermal efficiency.
Preserving chemical integrity. Made robust materials like stainless steel, hastelloy to ensures long life service.
Operation cost is low and steady operation. We can offer you customizable vacuum paddle dryer according to your needs.
High-thermal efficiency and low temperature operation. Safety frame, easy maintenance and compact design.
- Our Factory
- Technical Parameters
| Model | Power(kw) | Heat Transfer Area(m²) | Full Capacity(m³) | External Dimensions(L×W×H)(mm) |
| YQJ-30 | 15 | 30 | 1.97 | 5500×1300×810 |
| YQJ-50 | 18.5 | 50 | 3.27 | 5600×1600×1000 |
| YQJ-80 | 22 | 80 | 4.5 | 5200×1900×2700 |
| YQJ-100 | 30 | 100 | 6 | 6400×1900×2700 |
| YQJ-120 | 37 | 120 | 8 | 7200×1900×2700 |
| YQJ-150 | 45 | 150 | 9 | 6200×2500×3000 |
| YQJ-180 | 45 | 180 | 11.5 | 7500×2500×3000 |
| YQJ-200 | 55 | 200 | 15 | 9000×2500×3000 |
| YQJ-260 | 75 | 260 | 17.5 | 8600×2800×3300 |
| YQJ-300 | 75 | 300 | 20 | 10100×2800×3300 |
| YQJ-350 | 90 | 350 | 26 | 11000×3000×3650 |
| YQJ-400 | 90 | 400 | 30 | 11500×3200×3750 |
| YQJ-450 | 110 | 450 | 33 | 12000×3300×3950 |
| YQJ-500 | 132 | 500 | 36 | 12500×3400×4100 |
What is Vacuum Paddle Dryer
FANQUN’s vacuum paddle dryer typically consists of a cylinder, heating jacket, hollow paddle shaft, vacuum system, and other components. It is a batch drying system that combines drying, agitation, and solvent recovery into a single machine. The vacuum paddle dryer is mainly used to handle materials with high wet solid content due to its good flowability. It is also friendly to heat-sensitive materials, producing stable and complete products for you.
How Does a Vacuum Paddle Dryer Work
- Step 1: Before drying the materials, the vacuum system of the vacuum paddle dryer decreases pressure of the cylinder to build a vacuum environment. This step is mainly used to reduce boiling points of the raw material, making it suitable for evaporation with low temperature. For heat-sensitive material, the vacuum pressure reduction process is especially important.
- Step 2: After decreasing the boiling points of materials, the materials can be heated and dried by the paddle. The structure of the paddle shaft and paddle body is hollow, making it suitable to be filled with thermal oil, steam, or hot water. With continuous agitation and mixing, the material can be heated evenly to ensure a uniform drying process.
- Step 3: The evaporated solvent generated during the drying process is removed by the vacuum system. It can be collected by the cooling system to reduce solvent loss and VOC emissions. Then the final dry products are also collected.
Advantages of Vacuum Paddle Dryer
High-efficiency Drying Process
The vacuum paddle dryer uses an indirect heating mode with two heat sources. The heat transfer medium fills both the jacket and the hollow paddles to improve heating efficiency. In addition, the paddle shaft brings the drying system to rotate continuously, renewing the heated surfaces of materials while also accelerating drying speed. This will efficiently shorten the drying cycle. The vacuum paddle dryer also features high thermal efficiency and large heat transfer surface to significantly shorten 40% of the drying time than traditional drying methods for you.
Excellent Product Quality
Some materials such as antibiotics, polymers, and plant extracts are sensitive to high temperatures. One of the biggest advantages of the vacuum paddle dryer is its support for the drying process with low temperature. It preserves most of the product’s active ingredients and bioactive compounds, ensuring high quality of the final products. In addition, the vacuum paddle dryer maintains continuous agitation during the drying process to ensure uniform heating of the material. This not only improves consistency of material particles, but also prevents issues such as sticking or caking.
Strong Production Capacity
Based on its strong agitation capability and high heat conductivity efficiency, the vacuum paddle dryer supports handling various different materials. It is especially suitable for materials that are easy to discolorate, oxidate, or decompose, ensuring the product’s quality. Even for high-viscosity material, the vacuum paddle dryer also keeps good flowability by continuous agitation. This significantly reduces sticking to the walls or clogging issues.
Safety and Environmental Protection
The structure of a vacuum paddle dryer is typically enclosed to prevent the materials contacting external environmental factors or operators. This protects materials from oxidation and contamination while also eliminating the volatilization of harmful gases. For the material that contains organic solvents, the vacuum system and condenser can recycle it directly. This not only prevents explosion risks, but also reduces VOCs emission to meet the demand of environmental protection.
Economic Advantages
Main drive components of the vacuum paddle dryer feature a robust structure to extend service life, decreasing the maintenance rates of the machine. Its unique paddle structure offers high stability and reliability to ensure normal operation in the high load conditions. Additionally, the drying process of the equipment does not need too high temperature. This means the energy consumption will be reduced, thereby saving your costs. The enclosed system of the vacuum paddle dryer efficiently reduces product loss, increasing product yield to enhance economical benefits.
Vacuum Paddle Dryer Applications
Chemical Industry
The vacuum paddle dryer is widely used in the chemical industry to handle high-viscosity resins, dyes, surfactants, and additives that are sensitive to high temperatures. It offers high processing capacity to convey slurries into powders or lumps. The chemical industry generally involves materials that contain organic solvents. The vacuum paddle dryer collects these harmful solvents during the drying process to prevent safety risks. The machine also makes chemical materials maintain good flowability and ensures minimal color variation.
Food Industry
For the food industry, the vacuum paddle dryer offers a drying process with low temperature to handle soy protein, plant extracts, hydrolyzed proteins, and nutritional fortifiers. This not only prevents nutrient loss caused by high temperatures, but also preserves natural color and flavor of raw materials. In addition, the vacuum paddle dryer used for the food industry is typically made of stainless steel to meet the food hygiene standards.
Pharmaceutical and Bioengineering
The vacuum paddle dryer can be used to dry drug raw materials with high speed, meeting the continuous production requirements of the pharmaceutical industry. It features enclosed structures to maintain cleanliness during the drying process, ensuring the purity and stability of products. The low temperature drying features of this machine also preserve drug activity and are suitable to handle heat-sensitive materials. For expensive solvents, the vacuum paddle dryer features a recycle system to reduce loss.
Environmental Industries
You can also use the vacuum paddle dryer for the environmental industry, such as municipal sludge, chemical waste residues, and more. It can handle the waste materials with high water content to make them more convenient to be fired, composted, or used as building materials. This not only meets the safety and environmental production demands, but also reduces waste treatment costs.
How to Select Proper Vacuum Paddle Dryer
A proper vacuum paddle dryer provides high production capacity while also offering additional benefits for you. When selecting the vacuum paddle dryer, you should consider comprehensive factors. The following are common factors for your reference:
- Material Properties: Properties of the raw material is an important factor that you should consider, including viscosity, water content, solid content, heat sensitivity, and more. These parameters are directly connected to the drying process demands. You should ensure the vacuum paddle dryer you choose can meet actual requirements.
- Drying System: When selecting the vacuum paddle dryer, you should also focus on its drying system, which determines the entire performance of the machine. For example, the heat transfer area of a vacuum paddle dryer affects its drying speed. You can also choose suitable heat sources based on the thermal stability of materials, such as thermal oil, steam, or hot water.
- Drive and Agitation Structure: Different types of materials require different agitation speed to maintain excellent flowability. You should analyze the paddle torque and motor parameter to determine if the machine can handle your project material. The paddle of the vacuum paddle dryer also offers various shapes to meet different demands, such as standard paddles, angled paddles, and tapered paddles.
- Vacuum Requirements: Different solvents feature different boiling points that require a suitable vacuum level. In general, materials that are easy to oxidize or have high demands on residual solvents need a higher vacuum level.
- Machine Material: The vacuum paddle dryer is mainly made of 304/316L stainless steel, glass-lined steel, and special alloys. You should select it based on the corrosion resistance and cleanliness requirements of raw materials. Ensure the machine you choose can meet the industry’s demands.
- Process Requirements: The vacuum paddle dryer supports equipping with a solvent recovery system or other special devices to meet different demands. You can determine the process requirements you need based on the material types, capacity demands, and others.
- After-sale Service: You should better choose the famous brands or suppliers to ensure reliable and stable machine quality. They typically provide professional after-sale service, and support local service. When your vacuum paddle dryer is damaged, they can solve it in time, reducing downtime loss.
As a professional vacuum paddle dryer supplier, FANQUN features mature production lines and advanced technology to ensure high product quality. We have accumulated more than 30 national patents, and established long-term partnerships with renowned companies. All of our machines have obtained multiple certifications such as ISO 9001. If you have any questions about the vacuum paddle dryer, please feel free to contact us for a solution.
Two types of dryers both employ an indirect heating system. The vacuum paddle dryer relies on two heat sources and continuous paddle agitation to ensure uniform heating material. It is especially suitable for high-viscosity materials. While the double cone rotary vacuum dryer mainly relies on the rotating drum. It features lower heat transfer area and efficiency and is difficult to handle materials that easily agglomerate.
