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        QJ Series Hollow Blade Dryer
        Descriptions
        Applicable for drying or cooling of paste, particle, powder and slurry state of material, perform the process of drying, cooling, heating, sterilizing, reacting and combustion under low temperature. The special stirring and heating transferring blade, makes high heat transferring efficiency, and provide self-cleaning function. The special chock shaped stirring and heat transferring blade has high heating efficiency and self-cleaning function of the heating transferring surface.

        Hollow chock shaped blades are concentrated on the hollow shaft. Heat media flow through the blade from the hollow shaft. The heat transferring area in the effective volume is very high. The temperature range of heating media is -40 ℃ to 320 ℃ . It might be steam, or liquid state, such as steam, thermal oil etc. Indirect heating, there’s no heat carried out by air. All heat is utilized for to drying the material except the lost of heat insulation layers. The surface of chock shaped blade has self-cleaning function. The relative movements of the product particles and the chocked shaped surface might clean the material attached to the chock shaped surface, so to keep the cleanliness of heat transferring surface during working. The shell of hollow blade dryer is Ω shape. 2 or 4 pieces of hollow stirring shaft are usually equipped in the shell. To avoid any leakage of material, there’re sealed terminal cover and top cover with the shell. The heat transferring media flow through the rotation connector, jacket’s shell and hollow stirring shaft. To ensure best transferring effect, the hollow stirring shaft adopts different interior structure in accordance with different heating media. 
              

        Features
        1. The heat consumption of blade is low: No heat carried out by the air because of indirect heating; there’s no heat insulation layer with the exterior wall of the dryer. It consumes 1.2 kg of steam to evaporate 1kg of water for to drying slurry state of material.

        2. The cost of the blade dryer is low: The unit effective volume has very large heat transferring surface, so the processing time is shorted, the size of the equipment becomes small. The building area and place are sharply decreased.

        3. The range of material to be processed is wide: Heat sensitive material and the materials to be processed under high temperature might be processed with different heating media. The normal media are: steam, thermal oil, hot water and chill water. It might be continuous or batch operation, widely used in many areas.

        4. The pollution is less: Without any carrying air, very few powder is carried out. The solvent evaporated is very few, it easy to be processed. For the material that might cause pollution or the solvent to be recovered, it might adopt sealed circulation.

        5. The operation cost is low: 1hour/day.operator is enough for normal operation. Low stirring speed and reasonable structure, the worn amount is few, and the maintenance fee is low.

        6. Steady operation: The material particles fully contact heat transferring surface, because of the special compressing and swell-stirring effect of the chock shaped blade. The difference of the temperature, humidity and mixing effect are very small in the different axial area, so to ensure the stability of process.

        Applications
        The blade dryer is successfully applied in foodstuff, chemical, petrochemical, dyestuff, and industrial mud etc. The heating transferring, cooling and stirring characters enable it to perform the following unit operation: combustion (low temperature), cooling, drying (recovery of solvent), heating (melting), reacting and sterilizing. The stirring blade is heat transferring surface too, so to increase heat transferring area of unit effective volume is increased, and decrease processing time. The chock shaped heat transferring surface has self-cleaning function. Compressing and swell-stirring functions make the material mixed uniformly. The material perform the movement of "piston flow" along the shaft. The difference of the temperature, humidity and mixing effect are very small in the different axial area. The blade dryer is capable to perform combustion under low temperature if we adopt thermal oil as heating media, such as Ca 2 S04 · 2H 2 O is combusted into Ca 2 SO 4 · 1/2H 2 O, NaHCO 3 is combusted into Na 2 CO 3 and so on. It’s capable for cooling process with water and chill salted water etc, such as base cooling machine in Na 2 CO 3 industry, instead of the old style base air cooler, so to save power and the processing equipment for tail air, and save operation cost. Drying, is the main function of this machine. Drying without hot air makes the process of solvent recovery, energy consumption, control of environment ideal, easy to teat. It’s specially applicable for recovery of solvent and heat sensitive material that is easy to be combusted or oxidized. It has been widely used in fine chemical, petrochemical, and dyestuff industries. The uniformity of temperature, humidity and mixing effect in axial areas make the equipment capable for heating and melting, or reaction of solid material. It’s successfully applied in mixed fertilizer and character transformed starch industries. The blade dryer is also capable for sterilizing food and starch. The big heating area in unit effective area, dry the material to sterilizing temperature very fast, so to avoid quality change caused by long time heating.

        Schematic of structure

        Technical paramenters
        spec\item 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
        range of rotating speed 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 3.8 5.5 7.5 11 15 30 45 55 75 95
        width of vessel mm 306 584 762 940 1118 1296 1474 1652 1828 2032 2210
        total width mm 736 841 1066 1320 1474 1676 1854 2134 1186 2438 2668
        length of vessel mm 1956 2820 3048 3328 4114 4724 5258 5842 6020 6124 6122
        total length mm 2972 4876 5486 5918 6808 7570 8306 9296 9678 9704 9880
        distance of material inlet & outlet 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
        total height mm 762 838 1092 1270 1524 1778 2032 2362 2464 2566 2668
        steam inlet “N” (inch) 3/4 3/4 1 1 1 1 11/2 11/2 11/2 2 2
        water outlet "o" (inch) 3/4 3/4 1 1 1 1 11/2 11/2 11/2 2 2

         
         
         
         
         

        Address: JiaoXi town, changzhou, jiangsu province, China
        Telephone: 0519-88903789 88900928
        Fax: 0519-88900928
        EMAIL:office@jndrying.com
        Website: http://www.slotsonlinem.com
        Zip code: 213116
        Contact person: Mr Gu
        Phone: 13951227837

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