Basic Info.
Heating Mode
Steam or Hot Water
Material Status
Solution, Cream
Drying Medium
Superheated Steam, Air
Operational Method
Continuous
Product Description
Description:
The product can indirectly heat or cool paste, granular, powder, and slurry materials, and can complete unit operations such as drying, cooling, heating, sterilization, reaction, and low temperature combustion. The special wedge-shaped stirring heat transfer paddles in the equipment have high heat transfer efficiency and self-cleaning function of the heat transfer surface.
Working Principle:
Wedge-shaped hollow paddles are densely arranged on the hollow shaft, and the heat medium flows through the paddles through the hollow shaft. The heat transfer area in the unit effective volume is very large, and the temperature of the heat medium is from -40 ºC to 320 ºC. It can be water vapor or liquid type: such as hot water and thermal oil. Indirect conduction heating, without carrying 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 body. The wedge-shaped paddle heat transfer surface has a self-cleaning function. The relative movement of the material particles and the wedge-shaped surface produces a scrubbing effect, which can wash off the attached materials on the wedge-shaped surface, so that the clean heat transfer surface is always maintained during operation. The shell of the paddle dryer is Ω type, and generally two to four hollow stirring shafts are arranged in the shell. The shell has a sealed end cover and an upper cover to prevent the material dust from leaking and fully play its role. The heat transfer medium flows through the shell jacket and the hollow stirring shaft through the rotary joint. The hollow stirring shaft has different internal structures according to the type of heat medium to ensure the best heat transfer effect.
Product Features:- Low energy consumption of the paddle dryer: Due to indirect heating, there is no large amount of air to carry away the heat. The outer wall of the dryer is also provided with an insulation layer. For the slurry material, only 1.2 kg of steam is required to evaporate 1 kg of water.
- The cost of the paddle dryer system is low: the unit effective volume has a huge heat transfer surface, which shortens the processing time and reduces the size of the equipment. It greatly reduces the construction area and construction space.
- Wide range of processing materials: using different thermal media, it can process both heat-sensitive materials and materials requiring high temperature processing. Commonly used media are: water vapor, thermal oil, hot water, cooling water, etc. It can be operated continuously or intermittently, and can be applied in many fields.
- Low environmental pollution: no carry air is used, and dust materials are rarely entrained. The solvent evaporation of the material is very small, easy to handle. For the working conditions of contaminated materials or solvents that need to be recovered, closed circuit circulation can be used.
- Low operation cost: The equipment operates normally, only 1 hour / day · person. Low speed stirring and reasonable structure. The amount of wear is small and the maintenance cost is very low.
- Stable operation: due to the special compression-expansion and stirring effect of the wedge-shaped paddle, the material particles are fully in contact with the heat transfer surface. In the axial interval, the temperature, humidity, and mixing gradient of the material are very small, thus ensuring Process stability.
Application:
The paddle dryer has been successfully used in food, chemical, petrochemical, dye, industrial sludge and other fields. The characteristics of heat transfer, cooling and stirring of the equipment make it possible to complete the following unit operations: combustion (low temperature), cooling, drying (solvent recovery), heating (melting), reaction and sterilization. The stirring paddle is also a heat transfer surface, which increases the heat transfer area in the unit effective volume and shortens the processing time. The wedge-shaped paddle heat transfer surface has a self-cleaning function. The compression-expansion and stirring function makes the materials mixed evenly. The material moves in a "piston flow" along the axial direction. In the axial interval, the temperature, humidity, and mixing degree of the material are very small. Using heat conduction oil as the heat medium, the paddle dryer can complete the low temperature combustion work. Such as: calcium sulfate dihydrate (Ca2SO4 · 2H2O) is converted into calcium sulfate hemihydrate (Ca2SO4 · 1 / 2H2O). Sodium bicarbonate (NaHCO3) is converted into soda ash (Na2CO3) after calcination. Passing cooling medium, such as water, cooling brine, etc., can be used for cooling. For example, the paddle cooler used in the soda industry replaces the old-fashioned air-cooled cooler, which saves energy and exhaust gas treatment equipment, and reduces operating costs. Drying, the main function of the equipment, does not use hot air, so that solvent recovery, energy consumption, and environmental control are in an ideal state for easy handling. Especially suitable for the recovery of solvents, flammable and oxidizable heat-sensitive materials. It has been widely used in fine chemical, petrochemical and dye industries. In the axial interval, the uniformity of temperature, humidity and mixing degree makes the equipment can be used for heating or melting, or for some solid material reactions. It has been successfully used in compound fertilizer and modified starch industries. The paddle dryer can be used to sterilize food and flour. The large heating area in the unit effective volume quickly heats the material to the sterilization temperature, avoiding long-term heating and changing the quality of the material. Technological Process:Technical Parameters:Item/Model | QJ3 | QJ9 | QJ13 | QJ18 | QJ29 | QJ41 | QJ52 | QJ68 | QJ81 | QJ95 | QJ110 |
Heat transferring area(m²) | 3 | 9 | 13 | 18 | 29 | 41 | 52 | 68 | 81 | 95 | 110 |
Effective volume(m³) | 0.06 | 0.32 | 0.59 | 1.09 | 1.85 | 2.8 | 3.96 | 5.21 | 6.43 | 8.07 | 9.46 |
Rotation speed range(r.m.p) | 15-30 | 10-25 | 10-25 | 10-20 | 10-20 | 10-20 | 10-20 | 10-20 | 5-15 | 5-15 | 5-10 |
Power(kw) | 2.2 | 4 | 5.5 | 7.5 | 11 | 15 | 30 | 45 | 55 | 75 | 95 |
Machine width A (mm) | 306 | 584 | 762 | 940 | 1118 | 1296 | 1474 | 1652 | 1828 | 2032 | 2210 |
Total width B (mm) | 736 | 841 | 1066 | 1320 | 1474 | 1676 | 1854 | 2134 | 1186 | 2438 | 2668 |
Machine length C (mm) | 1956 | 2820 | 3048 | 3328 | 4114 | 4724 | 5258 | 5842 | 6020 | 6124 | 6122 |
Total length D (mm) | 2972 | 4876 | 5486 | 5918 | 6808 | 7570 | 8306 | 9296 | 9678 | 9704 | 9880 |
Distance between feeding and discharge E (mm) | 1752 | 2540 | 2768 | 3048 | 3810 | 4420 | 4954 | 5384 | 5562 | 5664 | 5664 |
Centered height F (mm) | 380 | 380 | 534 | 610 | 762 | 915 | 1066 | 1220 | 1220 | 1220 | 1220 |
Total height H (mm) | 762 | 838 | 1092 | 1270 | 1524 | 1778 | 2032 | 2362 | 2464 | 2566 | 2668 |
Air inlet N (Inch) | 3/4 | 3/4 | 1 | 1 | 1 | 1 | 11/2 | 11/2 | 11/2 | 11/2 | 2 |
Water oulet O (Inch) | 3/4 | 3/4 | 1 | 1 | 1 | 1 | 11/2 | 11/2 | 11/2 | 11/2 | 2 |
Address:
Si′an Town Industrial Zone, Changxing County, Zhejiang Province, Huzhou, Zhejiang, China
Business Type:
Manufacturer/Factory
Business Range:
Industrial Equipment & Components, Manufacturing & Processing Machinery
Management System Certification:
ISO 9001, ISO 14001, OHSAS/ OHSMS 18001
Company Introduction:
Zhejiang Qianjiang Wei′an Drying Equipment Co., Ltd. Is the deputy director of China Drying Equipment industry Association and the first batch of core enterprises. As a high-tech enterprise integrating technology development, equipment manufacturing, sales, installation and technical consulting services in the field of thermal drying, the company was established in 2001 and was transformed from a collective enterprise established in 1988, it has fixed assets valued 50 million RMB, a modern office laboratory building of 5, 400 square meters, a modern production factory covering 10, 000 square meters, with complete technological equipment, and has more than 30 sets of various types of test and inspection equipment.
The company established the unique drying technology journal "Drying Technology and Equipment" in domestic drying industry. The FG fluid-bed dryer won the title of the first batch of recommended products in the national drying industry, the inner heating fluid bed dryer has passed the scientific and technological achievements of Zhejiang Province and its thermal efficiency is as high as 75%. The company also presided over the drafting of the ministerial standards for "Horizontal Fluid-Bed Dryer" and "Spray Granulation Fluid-Bed Dryer" and won the Hangzhou Science and Technology Achievement Award.
The company has made great progress in cooperating with Zhejiang University, China Agricultural University, Zhejiang University of Technology etc. And scientific research institutions to develop new technologies, new equipment and product innovation. We have successively developed new products such as inner heating fluid-bed dryer, harrow horizontal fluid-bed dryer, coarse particle spray granulation fluidized bed dryer, superheated steam dryer, etc., which have also been well received by clients.
The company has passed the ISO9001, ISO14001 certificate. Its development always be technology and quality-oriented, products have been supplied to more than 14 countries, served over 1, 400 large enterprises.