Paddle dryer is a kind of low-speed agitated dryer with agitated pulp inside the equipment to make the wet materials fully contact with heat carrier and hot surface under the stirring of paddles, so as to achieve the purpose of drying. The structure is generally horizontal, double axis or four axis. The paddle dryer is divided into hot air type and conduction type. The hot air type is through the heat carrier (such as hot air) and the material to be dried contact and drying.
The product can indirectly heat or cool paste, granular, powdery and slurry materials, and can complete unit operations such as drying, cooling, heating, sterilization, reaction, low temperature combustion, etc. The special wedge-shaped agitated heat transfer blade in the equipment has high heat transfer efficiency and self-cleaning function of heat transfer surface.
Stucture Introduction
The main structure is a W-shaped shell with a jacket, which is equipped with a pair of hollow low-speed rotating hollow shafts. A number of mixing blades are welded on the shaft. The jacket and the hollow mixing blades are all equipped with heat carriers, and the two heating surfaces heat the materials at the same time. The heat carrier is usually fed from the middle of the dryer and discharged from the other side through the surface of the material layer in the agitated state.
Wedge-shaped hollow blades are densely arranged on the hollow shaft, and the thermal medium flows through the blades through the hollow shaft. The unit effective volume has a large heat transfer area. The temperature of the thermal medium ranges from - 40 ° C to 320 ° C, which can be water vapor or liquid type: such as hot water, heat transfer oil, etc. Indirect conduction heating does not carry air to take away heat. Heat is used to heat materials. The heat loss is only the heat dissipation to the environment through the insulation layer of the reactor body. The heat transfer surface of the wedge-shaped blade has the function of self-cleaning. The relative movement of the material particles and the wedge-shaped surface can wash off the attached materials on the wedge-shaped surface, so that the clean heat transfer surface is kept in motion all the time.
Product Feature
Low energy consumption of pulp leaf dryer: due to indirect heating, there is no large amount of air to take away heat, and the outer wall of the dryer is provided with insulation layer, which only needs 1.2kg steam to evaporate 1kg water for slurry materials.
Low cost of blade dryer system: the unit effective volume has a huge heat transfer surface, which shortens the processing time and reduces the equipment size. It greatly reduces the building area and building space.
A wide range of processing materials: using different thermal media, it can handle both heat sensitive materials and materials requiring high temperature treatment. Common media are: steam, heat transfer oil, hot water, cooling water, etc.
It can be operated continuously or intermittently, and can be used in many fields.
Small environmental pollution: do not use carrying air, dust material entrainment is small. The evaporation of solvent is very small, which is easy to handle. It can be used for contaminated materials or solvent recovery.
Product Application
• The materials from such as the medicine food , chemical industry, etc. can be dried.
• Suitable for pulpiness, paste-like mixture or power raw material.
• Temperature sensing material requiring the low temperature to be dried.
• Raw materials that are easy to oxidize or explode and have strong irritative or toxic.
• Demand to retrieve of the organic solvent.
Technical Parameters
| Model | HPD-3 | HPD-9 | HPD-13 | HPD-18 | HPD-29 | HPD-41 | HPD-52 | HPD-68 | HPD-81 | HPD-95 | HPD-110 | HPD-125 | HPD-140 |
| Heat transfer area(m2) | 3 | 9 | 13 | 18 | 29 | 41 | 52 | 68 | 81 | 95 | 110 | 125 | 140 |
| Effective volume(m3) | 0.06 | 0.32 | 0.59 | 1.09 | 1.85 | 2.8 | 3.96 | 5.21 | 6.43 | 8.08 | 9.46 | 10.75 | 12.18 |
| Speed range(rpm) | 5-20 | 5-20 | 5-20 | 5-20 | 5-20 | 5-10 | 5-10 | 5-10 | 5-10 | 1-8 | 1-8 | 1-8 | 1-8 |
| Transmission power(kw) | 2.2 | 4 | 5.5 | 7.5 | 11 | 18.5 | 30 | 37 | 45 | 55 | 75 | 90 | 110 |
| Device width(m) | 306 | 584 | 762 | 940 | 1118 | 1296 | 1474 | 1655 | 1828 | 2032 | 2210 | 2480 | 2610 |
| Overall width(m) | 736 | 841 | 1066 | 1320 | 1474 | 1676 | 1854 | 2134 | 2186 | 2438 | 2668 | 2732 | 2935 |
| Equipment length(m) | 1956 | 2820 | 3048 | 3328 | 4114 | 4724 | 5258 | 5842 | 6020 | 6124 | 6850 | 7500 | 7860 |
| Total length(m) | 2972 | 4876 | 5486 | 5918 | 6808 | 7570 | 8306 | 9296 | 9678 | 9704 | 10300 | 11800 | 12900 |
| Center height(m) | 380 | 450 | 534 | 610 | 762 | 915 | 1066 | 1220 | 1430 | 1560 | 1650 | 1760 | 1856 |
| Total Equipment height(m) | 762 | 838 | 1092 | 1270 | 1524 | 1778 | 2032 | 2362 | 2464 | 2566 | 2668 | 2769 | 2838 |
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