HIGH PERFORMANCE DRYING AND CONCENTRATING
In the quest to produce a high-performance and high-efficiency dryer, Nishimura Works succeeded in making one that is also a space saver. We recommend the use of our original product, the CD Dryer, on the production line or for treating waste liquids, to companies looking for ways to reduce costs and other excess.
ABOUT THE CD DRYER
The CD Dryer uses indirect heat to dry materials through conduction. The principles are similar to drum dryers or the cylinder dryers used for paper production, but instead of drying on the curved surface of the drum or cylinder, the CD Dryer dries liquids on both of its flat surfaces.
We raised the overall heat transfer coefficient, making the high performance CD Dryer a revolutionary development in conductive heating-type dryers.
We offer various surface treatments for the disks, making it possible to dry of a wide variety of liquids.
RESULTS OF WATER EVAPORATION TESTS
Evaporation Capacity (20°C water) |
200kg/㎡h |
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Overall Heat Transfer Coefficient |
2,300W/㎡K |
FEATURES
High Performance | The CD Dryer has recorded, on average, a capacity two times per m2 higher than conventional type drum dryers(※1) while using a lower steam pressure. |
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Compact Design | Because the CD Dryer dries using both sides of its thin disks, it requires a plane area that is approximately 40% of the area required by a drum dryer. (※2) |
Energy Saving/ High Efficiency |
Because of its compact design, heat loss is reduced, resulting in an 80 to 85% thermal efficiency. |
Speedy | The light weight of the heating unit means that even large dryers are ready to dry in 5 minutes. |
Less Thermal Decomposition of Materials |
Material damage from exposure to high temperature can be reduced because heating time is as short as 3 to 60 seconds. |
Reduction of Processing Steps |
Because it directly dries the liquid and scrapes the residue into a powder, additional processing steps can be eliminated with the CD Dryer. |
※1 Based on experiments of over 50 types of liquids
※2 To achieve the same results, only 1/5 the plane area for installation is needed due to the doubled capacity per 1m
OPERATIONAL OVERVIEW
1
Solution from the stock solution tank is supplied to the circulation tank. Flow is controlled by the level sensor.
2
Solution from the circulation tank is pumped through the header and poured over the disk surface.
3
Solution which adheres to the disk surface dries while the disk rotates and is scraped off by the scraper. Excess solution falls back into the circulation tank to be re-supplied.
STANDARD FLOW DIAGRAM
SPECIFICATIONS
Model* | CD-500 | CD-903 | CD-906 | CD-908 | CD-910 | CD-912 | CD-1306 | CD-1308 | CD-1310 | CD-1312 | CD-1316 | |
Disk Diameter mm |
540 | 900 | 1300 | |||||||||
Drying Area per disk m2 | 0.4 | 1 | 2 | |||||||||
Total Drying Area m2 | 1 | 3 | 6 | 8 | 10 | 12 | 6 | 8 | 10 | 12 | 16 | |
伝熱面積 ㎡ | 0.4 | 3 | 6 | 8 | 10 | 12 | 12 | 16 | 20 | 24 | 32 | |
Dimensions mm | A | 1390 | 2070 | 2690 | 3070 | 3500 | 3940 | 3680 | 4130 | 4530 | 4980 | 5780 |
B | 2180 | 2440 | 2940 | 2940 | 2940 | 2940 | 4700 | 4700 | 4700 | 4700 | 4700 | |
C | 1820 | 1770 | 1770 | 1770 | 1770 | 1770 | 2250 | 2250 | 2250 | 2250 | 2250 |
*Partial list of models. The 900 series is available in models with 1 to 12 disks; the 1300 series, with 6 to 16 disks.
CD DRYER TEST SAMPLES
Samples | Water content (%W.B.) |
Steam pressure (MPa) |
Drying capacity (kg/㎡h) |
Amount dried (kg/㎡h) |
|
---|---|---|---|---|---|
Original Liquid | Dried Product | ||||
Ceramics |
67 | 0.2 | 0.3 | 100 | 33 |
Ferrite |
60 | 0.1 | 0.3 | 175 | 70 |
Pigment |
70 | 3.0 | 0.1 | 54 | 17 |
Beer yeast |
88 | 5.0 | 0.3 | 80 | 10 |
Liquor Distillation Residue |
91 | 11.0 | 0.3 | 60 | 6 |
Waste milk beverage |
89 | 1.2 | 0.15 | 29 | 3 |
Water soluble paint |
98 | 10.0 | 0.13 | 63 | 1 |
Waste resist |
88 | 4.0 | 0.25 | 36 | 5 |
Highly concentrated salt water |
80 | 10.0 | 0.25 | 48 | 11 |
Waste water-soluble oil |
88 | 17.0 | 0.3 | 52 | 8 |