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KJG Series Hollow Blade Dryer

  • KJG Series Hollow Blade Dryer
  • KJG Series Hollow Blade Dryer

KJG Series Hollow Blade Dryer

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Class: Dryer Series
Overview: KJG Series Hollow Blade Dryer INTRODUCTION KJG Hollow Blade Dryer can indirectly heat or cool the materials in paste, granules, powders and slurries. It can also complete the unit process of drying, cooling, heating, sterilization, reaction and low tempera…
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KJG Series Hollow Blade Dryer


INTRODUCTION

KJG Hollow Blade Dryer can indirectly heat or cool the materials in paste, granules, powders and slurries. It can also complete the unit process of drying, cooling, heating, sterilization, reaction and low temperature combustion. The special heat-transfer stirring blade wedge type in the equipment has high heat-transfer efficiency and its heat-transfer surface has self-cleaning function.


WORKING PRINCIPLE

KJG Hollow Blade Dryer is a kind of low-speed stirring dryer which has a stirring blade set inside the machine, making the wet materials have a full contact with heat carrier and hot surfaces under the stirring of the blade, to achieve the purpose of drying. Its structure is generally horizontal, dual-axis or four-axis. This dryer is divided into hot air type and conduction type.


FEATURES

◎ Blade dryer is low energy-consumption: due to the indirect heating, there is not a lot of air carrying away the heat; the outer wall of the dryer set the insulation layer. For slurry material, it takes only 1.2kg water vapor to evaporate 1kg water.
◎ System of blade dryer is low cost;the heat transfer area is large in unit effective volume, which makes shorter the processing time and the smaller device size, greatly reducing its covering area and building space.
◎ It can handle wide ranges of materials; Using different heat medium, it can not only deal with heat-sensitive materials, but also materials requiring high temperature treatment. Common media are: steam, heat transfer oil, hot water and cooling water.
◎ It supports both continuous operation and intermittent operation; it can be applied in many fields.
◎ Environmental friendly: it does not use carry air and carries very little dust material. Material solvent evaporation is little so it is easy to handle. For materials which may cause pollution or requiring solvent recovery, closed circulation can be applied.
◎ Low operating costs: little abrasion, low maintenance cost.
◎ Stable operation: due to the special compression - expansion stirring of wedge-shaped blade, material particles have sufficient contact with the heat transfer surface. In the axial zone, materials have low temperature, low humidity and small mixing gradient so as to ensure  the stability of the process.


APPLICAITON

Blade dryer has been successfully applied in the fields of food, chemical, petrochemical, dyes, industrial sludge and so on. Its characteristics of heat transfer, cooling and stirring enable its following unit operation: Combustion (low-temperature), cooling, drying (solvent recovery), heating (melting), reaction and sterilization. Stirring blades also act as the heat transfer surface, so that the heat transfer area per unit effective volume is increased and the processing time is shortened. Wedge-shaped blade heat transfer surface has self-cleaning function and compression - expansion mixing function which makes the material mixed evenly. Materials move into "plug flow" axially. In the axial zone, material has low temperature, low humidity and small mixing gradient. If the heat transfer oil is used to do heat medium, the dryer can accomplish low-temperature combustion. For example: calcium sulfate dihydrate (Ca2SO4 • 2H2O) is combusted into calcium sulfate hemihydrate (Ca2SO4 • 1 / 22H2O); Sodium bicarbonate (NaHCO3) is calcined into sodium carbonate (Na2HCO3). If pumped into cooling medium, such as water, salt water, it can be used for cooling. For example, the blade-type soda ash cooler used in sodium carbonate industry replaces the old air-cooling cooler, saving energy and exhaust treatment equipment so that reducing operating costs. The main function of the device—do not use hot air, making the solvent recycling, energy consumption and environmental control in a tractable ideal state. It is particularly suitable for materials requiring recovering solvents, flammable, easily oxidized and heat-sensitive materials. It has been widely used in chemical, petrochemical and dye industries. In the axial zone, uniformity of temperature, humidity and degree of mixing makes the device can be used to heat or melt, or do some reaction of solid material. It has been successfully used in the industries of fertilizer and modified starch. Blade dryer can be used for sterilization of food and flour. With large heating area in unit effective volume, the materials will soon be heated to the sterilization temperature, avoiding that long heating may change the quality of materials.


STRUCTURE SCHEMATIC



TECHNICAL PARAMETERS


Item\Model

KJG-3
KJG-9
KJG-13
KJG-18
KJG-29
KJG-41
KJG-52
KJG-68
KJG-81
KJG-95
KJG-110
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
Speed Range(rmp)
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
Inner Width ID(mm)
306
584
762
940
1118
1296
1476
1652
1828
2032
2210
Outer Width OD(mm)
736
841
1066
1320
1474
1676
1854
2134
1186
2438
2668
Body Lenght (mm)
1956
2820
3048
3328
4114
4724
5258
5842
6020
6124
6122
Total Lenght (mm)
2972
4876
5486
5918
6808
7570
8306
9296
9678
9704
9880
Distance of feeding and discharge(mm)
1752
2540
2768
3048
3810
4420
4954
5384
5562
5664
5664
Height of Center (mm)
380
380
534
610
762
915
1066
1220
1220
1220
1220
Hotal Height (mm)
762
838
1092
1270
1524
1778
2032
2362
2464
2566
2668
Heat Inlet (inch)
3/4
3/4
1
1
1
1
11/2
11/2
11/2
11/2
2
Heat Outlet (inch)
3/4
3/4
1
1
1
1
11/2
11/2
11/2
11/2
2
  • KJG Series Hollow Blade Dryer
  • KJG Series Hollow Blade Dryer
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