KJG series hollow blade dryers

Overview:
    The hollow shaft is arranged with wedge-shaped hollow blades densely, and the heat medium flows through the hollow shaft through the blades. Unit effective volume of heat transfer area is large, heat medium temperature from -40 ℃ to 320 ℃, can be water vapor, it can be liquid type: such as hot water, heat transfer oil. Indirect conduction heating, do not carry air to carry away heat, heat are used to heat the material. Heat loss is only through the body insulation layer to the environment heat. Wedge-type blade heat transfer surface with self-cleaning function. The relative movement of the material particles and the wedge surface produces a scrubbing action capable of scrubbing away the material attached to the wedge surface to maintain a clean heat transfer surface during operation. Paddle dryer shell for the W-type, the shell generally arranged in two to four hollow stirring shaft. The housing has a sealed end cap and an upper cover to prevent the material dust from leaking and to collect the material solvent vapor. A material block is arranged at the discharge port to ensure the height of the material level so that the heat transfer surface is fully covered by the material. The heat medium passes through the rotary joint, flows through the shell jacket and the hollow stirring shaft. The hollow stirring shaft has different internal structure according to the type of heat medium to ensure the best heat transfer effect.


application:
    Paddle dryer has been successfully used in food, chemical, petrochemical, dyes, industrial sludge and other fields. The heat transfer, cooling and stirring characteristics of the unit allow the following unit operations to be performed: calcination (cryogenic), cooling, drying (solvent recovery), heating (melting), reaction and sterilization. Stirring blade is also a heat transfer surface, so that the unit effective volume of heat transfer area increases, shortening the processing time. Wedge-shaped blade heat transfer surface and has a self-cleaning function. Compression - expansion mixing function to make the material mixed evenly. Material along the axial into the "piston flow" movement, in the axial interval, the material temperature, humidity, mixing gradient is very small.
● using heat transfer oil to do heat medium, paddle dryer to complete the low-temperature calcination work. Such as: calcium sulfate dihydrate (Ca2SO4 · 2H2O) calcination conversion of calcium sulfate hemihydrate (Ca2SO4 · 1 / 2H2O). Sodium bicarbonate (NaHCO3) by calcination into soda ash (Na2CO3) and so on.
● Cooling medium, such as water, cooling brine, etc. can be used for cooling. Such as: used in the soda ash industry, the paddle cooler machine, to replace the old-fashioned air-cooled cooling machine, saving energy and exhaust gas treatment equipment, reducing operating costs, can also be used for titanium dioxide, nickel iron alloy powder and a variety of powder granular Cooling of materials. In a single machine where the material can be cooled from 1000 ℃ to less than 40 ℃.
● Drying, the most important function of the equipment, does not use hot air, so that the solvent recovery, energy consumption, environmental control in an ideal state of easy handling. The need to recover solvents, flammable easily oxidized heat-sensitive material is particularly suited. Has been widely used in fine chemicals, petrochemical, dye industry.
• Uniformity of temperature, humidity, and mixing in the axial section allows the equipment to be heated or melted, or to carry out some solid material reactions. In the compound fertilizer and modified starch industry have been successfully used. A paddle dryer can be used to sterilize food and flour. The unit effective volume of the large heating area, will soon be heated to the sterilization temperature of the material, to avoid the long heating and change the material quality.
 
Adapt to the material
Petrochemical industry: polyolefin powder, polycarbonate resin, high and low density polyethylene, linear low density polyethylene, polyacetal particles, nylon 6, nylon 66, nylon 12, cellulose acetate, polyphenylene sulfide, propylene Based resin, engineering plastics, polyvinyl chloride, polyvinyl alcohol, polystyrene, polypropylene, polyester, polyoxymethylene, styrene-acrylonitrile copolymerization, ethylene-propylene copolymerization.
Environmental protection industry: PTA sludge, electroplating sewage sludge, boiler soot, pharmaceutical waste, sugar plant waste, MSG waste residue, coal ash.
Feed industry: soy sauce residue, bone-based feed, distiller's grains, food underwood, apple pomace, orange peel, soybean meal, chicken feed, fish meal, feed additives,
Food industry: starch, cocoa beans, corn kernels, salt, modified starch, drugs.
Chemical industry: Soda, NPK compound fertilizer, kaolin, bentonite, white carbon black, carbon black, phosphogypsum, sodium fluoride, calcium nitrate, magnesium carbonate, sodium cyanide, aluminum hydroxide, barium sulfate, calcium sulfate, Calcium carbonate, dyes, molecular sieves, saponin.


Features:
● low energy consumption of the paddle dryer: due to indirect heating, there is no large amount of air to carry the heat away, the dryer wall and set the insulation layer, the slurry material, evaporation 1kg water only 1.22kg water vapor.
● Blade dryer system cost low: the unit has a large effective volume of heat transfer surface, to shorten the processing time, equipment, smaller size. To greatly reduce the construction area and building space.
● Processing a wide range of materials: the use of different heat medium, can handle heat-sensitive materials, but also the need to deal with high-temperature processing of materials. Commonly used medium: water vapor, heat conduction oil, hot water, cooling water and so on. Both continuous operation can also be intermittent operation, can be applied in many fields.
● Small environmental pollution: Do not use to carry air, dust material entrainment little. Material solvent evaporation is very small, easy to handle. For contaminated materials or the need to recover the solvent conditions, can be closed-loop.
● low operating costs: the device normal operation, only 1-2 people / day. Low-speed mixing and reasonable structure. Wear a small amount of maintenance costs are low.
● Stable operation: Due to the special compression-expansion stirring action of the wedge-shaped blades, the material particles are fully contacted with the heat transfer surface. In the axial interval, the temperature, humidity and mixing gradient of the material are small, thus ensuring the process The stability.

注：部分参数设计时视不同物料有所调整，以设

注：部分参数设计时视不同物料有所调整，以设计为准。