fluidized bed drying system - daesung manchinery

Advantage Daesung stationary fluidzed bed drying system is a most efficient equipment for drying and cooling of crystals, granules powders. The benefit is as below. ● High conductivity ● Enable to handling large capacity compared with short retention time ● Easy to maintenance ● Uniformed dry and cooling efficiency. Daesung FBD Series enable to apply continuos type and batch type,and use hot wind,mixed gas,solvent vapours. It operations pilot test for making most suitable fluidize bed. Continuous Drying & Uniformed Dry Efficiency It can be applied to continuative process by continuous the raw material supply and quantitative discharge using vibration conveying. And it makes fluidized bed layers by supplying hot air and cold air from the low part of perforated plate. By forming proper fluidized layers, it is possible to keep uniform and high drying efficiency. Economic Equipment All necessary process steps can be combined for an optimum result. The final product is generated directly from pastes, In case of already existing general stationary fluidized bed dryer, transportation air should be supplied additionally besides drying air needed for dry, because it has to be designed to carry the products by hot air. Therefore more air should be supplied than actually needed air. Because of additional un-exchanged hot air due to above reason, exhausted air temperature rises high. The amount of exhausted air is pretty bigger, so the final applications such as dust collector and induced draft fan comes bigger more than needed. In vibrating mode, the products can be conveyed using the power of vibration. In this way, it is possible to supply only needed amount of drying air and minimize capacity of the final application more than 60%, which gains great efficiency. Below are listed some materials which have been Experience table successfully processed in our fluid beds

Spray granulation utilizing fluid bed - Daesung Machinery

Spray granulation utilizing fluid bed

Advantage Purpose of all granulation processes is to generate a grain with defined structure, shape, size and composition (quality)as requested and specified. Original material for these processes can be ● powders or fibers ● suspensions ● pastes ● solutions ● molten materials or a mixture thereof. Drying of small moisture droplets on the surface of already existing granules in fluid bed units(spray granulation) becomes among all known granulation processes more and more importance. The process Spray granulation and - dry can be described simplified as follows: The primary product(paste, suspension, solution) is sprayed directly through a special nozzle into the fluidized layer. The liquid droplets, as they are formed through spraying, hit onto an already existing granule,a germ particle, with varying penetration depth into the fluidized layer. According to different adhesive forces the droplet will cover the "germ" in a thin layer. The solvent(most of the times water) evaporates utilizing the energy content of the fluidizationmedia, the dry matter stays on the surface of the germ-granule. This leads to the familiar growing of the granuals in form of layers, "hulls". Statistically, based on an identical residence time of each particle in the fluidized layer(an "ideal" vessel), all germs will be met by the same amount of liquid and show the same growing rate. Selection of spraying nozzles, laying down operation parameters and construction design, especially that of the air distribution plate, are determined by the product itself, characteristic of the primary product and requirements on the final product. Process advantage All necessary process steps can be combined for an optimum result. The final product is generated directly from pastes, suspensions or solutions. The growing of the granules always is connected to a drying process. DAESUNG has developed for this application a special, continuous operating dryer / cooler. Its main use is in the mining, salt, food, feed and pharmaceutical industries. Classical process lines, combining a number of basic processes such as evaporation, crystallization, mechanical dewatering and thermal drying are replaced with only one piece of equipment. Reducing the number of equipment greatly cutting back on efforts for capital, operating and personnel costs and at the same time improves product quality. Bulk handling activity

Air Classifying Mill

Air Classifying Mill This pulverizer has a classifier in the grinding chamber so it can freely adjust the particle size. It is widely used for chemicals, powder coatings, foods, nonferrous metals, and others. It is easy to clean and is suitable for multi-product production NO TITLE MATERIAL 1 COVER SUS304 2 HOUSING SUS304 3 SEPRATOR SUS304 4 MILL SKD61 5 FRAME SUS304 6 BEARING HOUSING SUS304 7 BUFFLE RING SUS304 8 SCREW FEEDER SUS304 CM Series Classifying Mill It is used to grind a large quantity of low-melting point materials. In order to prevent the materials from being melted by grinding heat, it supplies cooling and dehumidifying air. For final distribution of powder, a ultrasonic screen has been used Description of ACM Pulverizer  ACM means Air Classifying Mill, which is able to adjust the particle size through air classification when grinding. Grinding is done by pin and liner in the grinding chamber, and classification is done by air classifier in the grinding chamber Structure of ACM Pulverizer  ACM pulverizer is used to make the products of all the industrial fields into minute particles. It is applicable for any of customers' requirements whatever the products to grind are such as chemicals, foods, candies, cookies, minerals, powder coatings, plastics, etc. The mostremarkable part of this ACM pulverizer is elaborate and nice arrangement ofits components. The main motor and the housing are fixed on the steel frame, and the axle is rotated by V-belt. V-belt is located under the frame and it is easy to change a shaft from the lower part Flow of Handling Material and Air  A handling material is put into the pulverizer by table feeder. Air that is absorbed through the inhaling pressure of SUCTION FANDML and a handling material are mixed and grinded between the pin and the liner in the grinding chamber. The grinded powder, along evenly distributed ascending currents, is moved to the air classifier part. At this time, by the rotating speed of the air classifier, the centripetal force and the centrifugal force are created Powder, influenced by the centripetal force, is absorbed up into the discharge nozzle (6), together with air, and thick particles, influenced by the centrifugal force, can't pass through the classifier so they go back to the grinding zone (8) to be grinded again. In order to make the particle size smaller, rotational frequency of the air classifier should be increased. At this time, in order to prevent the phenomenon of bottle-neck in the pulverizer, the speed of feeding a handling material into the pulverizer should be lowered Pulverizing  ACM pulverizer works based on the principle of impact grinding. It uses a wing that revolves at over 90m/sec. Grinding of particles is done by the material's being crashed against the rotating pin (8) and the fixed liner (3) Classifying The special feature of ACM pulverizer is the classifier wheel (5). By two opposite forces (the centripetal force and the centrifugal force) and mass difference of material particles, it classifies large particles and small ones. The limit for classification is set by adjusting the speed of revolution of the classifier, and the limit is possibly adjusted even while grinding Application ● Powder coatings ● Wax and low-melting point materials ● Various resins ● Agricultural chemicals, insecticides, etc ● Dyes and paints ● Foods ● Medicines ● Various chemicals Classifying The special feature of ACM pulverizer is the classifier wheel (5). By two opposite forces (the centripetal force and the centrifugal force) and mass difference of material particles, it classifies large particles and small ones. The limit for classification is set by adjusting the speed of revolution of the classifier, and the limit is possibly adjusted even while grinding Feature ● Grinding and classifying are done at the same time so it is easy to change the target particle size ● Its design is simple so it is easy to operate and clean ● Temperature rise is very small in spite of continuous grinding ● Particle distribution curve is immediately made after grinding so satisfactory particle sizes can be obtained ● It doesn't make serious noises, dusts, and arsenic acid so working environment is good ● Excessive grinding is prevented so grinding efficiency is very high ● For any others than low-melting point materials, it is possible to supply hot air to not only grind them,    but also dry simultaneously Adjustment of Particle Size  The following chart will help you understand the process of adjusting the particle size Basic Process  The following chart will help you understand the process of adjusting the particle size Example of Particle Size The following chart will help you understand the process of adjusting the particle size SIZE PASS CHAN 1408 100.00 0.00 1291 100.00 0.00 1184 100.00 0.00 1096 100.00 0.00 9 100.00 0.00 91 100.00 0.00 837.2 100.00 0.00 767.7 100.00 0.00 704.0 100.00 0.00 645.6 100.00 0.00 592.0 100.00 0.00 542.9 100.00 0.00 497.8 100.00 0.00 456.5 100.00 0.00 418.6 100.00 0.00 383.9 100.00 0.00 352.0 100.00 0.00 322.8 100.00 0.00 296.0 100.00 0.06 271.4 99.94 0.09 248.9 99.85 0.10 228.2 99.75 0.13 209.3 99.62 0.15 191.9 99.47 0.16 176.0 99.31 0.15   SIZE PASS CHAN 161.4 99.16 0.15 148.0 99.01 0.17 135.7 98.84 0.17 124.5 98.67 0.16 114.1 98.51 0.18 104.7 98.33 0.27 95.96 98.06 0.39 88.00 97.67 0.55 80.70 97.12 0.87 74.00 96.25 1.39 67.86 94.86 2.26 62.23 92.60 3.54 57.06 89.06 5.09 52.33 83.97 6.95 47.98 77.02 8.38 44.00 68.64 9.33 40.35 59.31 9.44 37.00 49.87 8.70 33.93 41.17 7.59 31.11 33.58 6.14 28.53 27.44 4.88 26.16 22.56 3.79 23.99 18.77 2.95 22.00 15.82 2.36 20.17 13.46 1.93   SIZE PASS CHAN 18.50 11.53 1.64 16.96 9.89 1.43 15.56 8.46 1.29 14.27 7.17 1.19 13.08 5.98 1.10 12.00 4.88 1.00 11.00 3.88 0.90 10.09 2.98 0.79 9.250 2.19 0.66 8.482 1.53 0.53 7.778 1.00 0.41 7.133 0.59 0.30 6.541 0.29 0.19 5.998 0.10 0.10 5.550 0.00 0.00 5.044 0.00 0.00 4.625 0.00 0.00 4.241 0.00 0.00 3.889 0.00 0.00 3.566 0.00 0.00 3.270 0.00 0.00 2.999 0.00 0.00 2.750 0.00 0.00 2.522 0.00 0.00 2.312 0.00 0.00   SIZE PASS CHAN 2.121 0.00 0.00 1.945 0.00 0.00 1.783 0.00 0.00 1.635 0.00 0.00 1.499 0.00 0.00 1.375 0.00 0.00 1.261 0.00 0.00 1.156 0.00 0.00 0.060 0.00 0.00 0.972 0.00 0.00 0.892 0.00 0.00 0.818 0.00 0.00 0.750 0.00 0.00 0.688 0.00 0.00 0.630 0.00 0.00 0.578 0.00 0.00 0.530 0.00 0.00 0.486 0.00 0.00 0.446 0.00 0.00 0.409 0.00 0.00 0.375 0.00 0.00 0.344 0.00 0.00 0.315 0.00 0.00 0.289 0.00 0.00 0.265 0.00 0.00 Photograph for Reference It is applied to grind resins. In order to prevent a drop of the grinding efficiency by rise of air temperature in summer,it has employed a cooling unit so the operator can set desirable temperature and humidity of air to supply. (i.e.:15℃ x RH65%)     ACM10 SERIES It is applied to scatter a secondary cell material. The particle size of the secondary cell material is average 5㎛ , but it sometimes lumps in the process of drying. ACM10 Series is used to scatter this lump under the condition that this round particle is maintained     Reference Data MATERIAL FINENESS ACM10 ACM30 ACM60 Kg/hr Coal 325mesh 400 1300 2500 Copper oxide 325mesh 370 1100 2200 Limestone 100mesh 450 1200 2400 Limestone d97 30㎛   200   Limestone d83 76㎛ 800 2400 4800 Phenolic resin 200mesh 200 600 1200 Phenolic resin d90 30㎛     870 Corn flour 325mesh 110 350 700 Silica d50 7~10㎛     600 Pigment d99 18㎛   350   Coating powder d99 90㎛   150 ~ 250 600 ~ 1000 Sulphur d99 63㎛   150   Silica gel d99.9 200㎛   180   Soy protein d99 93㎛     1000 Soy protein d97 44㎛ 40 120 240 Talc d99 20㎛     700 Toner d50 25㎛     120 Sugar medium 200mesh 98% 270 700 1400 Sugar fine 325mesh 99% 170 400 750 Active alumina d98 44㎛ 200 610 1220 Alumina catalyst d50 5~10㎛ 120 330 600 Kaolin d99 53㎛ 90 230 450