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Competitive Price Small Vacuum Paddle Biomass Rotary Drum Dryer Organic Fertilizer Machine
Structure 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.
The Hollow Paddle Dryer has a metal wall which separates the process mass from the heat source (steam or hot oil). High thermal efficiency is obtained because the heat from the thermal medium goes directly into the process mass. As the material comes into contact with the heated through and agitators, the process mass is heated via conduction. With an insulated dryer, very little heat is lost. To evaporate 1kg of water only requires about 1.2kg of steam for slurry materials. Exhaust gas is minimal and at a low temperature. Therefore, the volume of non-condensable gas from the dryer, which might require treatment, is minimal.
The dryer is an indirect heat transfer device which utilizes a high degree of mechanical agitation to enhance contact with the product being dried. Evaporation rates per square foot of heat transfer surface are maximized through self-cleaning paddles and the mixing effect. Movement of the process material between the slanting surfaces of the revolving wedge-shaped paddles generates shearing forces, which clean the paddle surfaces and maximize conductivity. Counter rotating shafts move the material away from the walls, cleaning the walls by means of the tab on each paddle. This results in higher heat transfer rates than disc or single shaft designs.
The wedge-shaped paddles, and the intermeshing of the dual agitators, create a localized mixing effect around the paddle. This allows more individual particles in the bed to be exposed directly to the heat transfer surface, thereby increasing the heat transfer rate, allowing the use of smaller equipment.
Technical parameters
Model | KJG-2.7 | KJG-24 | KJG-52 | KJG-81 | KJG-110 |
Heat transfer area | 2.7 | 24 | 52 | 81 | 110 |
effective volume | 0.06 | 1.53 | 3.96 | 6.43 | 9.46 |
revolution | 15-30 | 10-20 | 10-20 | 5-15 | 5-10 |
power | 2.2 | 11 | 30 | 55 | 95 |
width of dryer body | 306 | 1118 | 1474 | 1828 | 2210 |
total width | 736 | 1474 | 1854 | 2286 | 2668 |
length of dryer body | 1956 | 3454 | 5258 | 6020 | 6122 |
total length | 2972 | 6147 | 8306 | 9678 | 9880 |
distance between feeding and disharging | 1752 | 3150 | 4954 | 5562 | 5664 |
height in center | 380 | 1066 | 1220 | 1220 | |
total height | 762 | 2032 | 2464 | 2668 | |
steam inlet | (2) 3/4 | (2) 1 | (2) 11/2 | (2) 11/2 | (2) 2 |
water outlet | (2) 3/4 | (2) 1 | (2) 11/2 | (2) 11/2 | (2) 2 |
Applications
Petrochemical industry: polyolefin powder, polycarbonate resin, high and low-density polyethylene, linear low-density polyethylene, polyacetal granules, nylon 6, nylon 66, nylon 12, acetate, polyphenylene sulfide, propylene base resin, polypropylene, engineering plastics, polyvinyl chloride, polyvinyl alcohol, polystyrene, polyester, polyoxymethylene, styrene-acrylonitrile copolymerization, ethylene-propylene copolymerization.
Environmental protection industry: sludge, electroplating sewage
sludge, boiler soot, sugar factory waste residue, pharmaceutical
factory waste residue, MSG factory waste residue, coal ash.
Feed industry: soy sauce residue, bone-based feed, distiller's
grains, food scraps, apple pomace, orange peel, soybean meal,
chicken bone feed, fish meal, feed additives, bio-sludge.
Food industry: starch, cocoa beans, corn kernels, salt, modified
starch, medicines.
Chemical industry: soda ash, NPK compound fertilizer, kaolin,
bentonite, white carbon black, carbon black, phosphogypsum, calcium
sulfate, calcium nitrate, magnesium carbonate, sodium cyanide,
oxidized sodium fluoride, aluminum hydroxide, barium sulfate,
calcium carbonate, molecular sieves, dyes, saponins.
1) Low energy consumption: As a result of indirect heating, no much air take away the
heating, the outer wall has insulation layer, the heat efficiency
can be up to 90%. For slurry, evaporating 1kg of water just need 1.2kg vapor.
2) cheap investment: it has huge effective heat transfer surface area per unit, reduce treatment time,
let the machine size become small, so It greatly reduces the
construction area and building space.
3) wide range of materials handling: can use different types of media, not only can treat
heat-sensitive materials, but also handle high-temperature
materials. Common medias are: water vapor, thermal oil, hot water,
cooling water and so on.
4) flexible operation method: Can be continuous operation or intermittent operation, can be
applied in many fields.
5) Low environmental pollution: don't use air to dry material, dust material entrainment is rare.
Small solvent evaporation, easy to treat. For contaminated
materials or solvent recovery conditions, closed-loop can be used.
6) Cheap operating costs: Low-speed mixing and reasonable structure, Low wear, low
maintenance costs. For normal operation, just only 1 person / day.
7) Stable operation: Due to the special compression-expansion stirring of the wedge
blades, the material particle contact with the heat transfer
surface enough, it ensure the processing is stable.