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Address: 15th Fl, Bldg No.13, National University Science Park(East), No.279, West 3# Ring Rd, Zhengzhou, China
Contact name:Andrew
Henan Zhengzhou Mining Machinery CO.Ltd |
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Ø2.0×20m Customized Rotary Coal Dryer
Introduction:
Coal rotary dryer is one of the common drying equipment for coal, which can dry various kinds of coal, such as brown coal,raw coal, coal slime, coal ash, coal cinder, coal slurry etc. The coal rotary dryer is widely used in power plant.
Working Principle:
The coal fines are feed into the dryer and conveyed from the inlet
to the discharge end by gravity due to a slight decline, and with
shovel plates that line the inside of the drum. Hot gas is passed
through the rotating drum in direct contact with the coal fines.The
feed is tumbled up and over the shovel plates to maximize the
agitation and contact with the hot gasses to induce drying. The
dryer fill level is typically only 10% of the internal diameter.
The low fill level aids in agitation of the product to insure
direct contact with the hot gas. Due to the agitation and gas
velocities, there is a substantial entrainment of particulate in
the exhaust gas. The gas flow in the rotary dryer is typically
co-current with the feed. The moisture and particulate have to be
removed from the exhaust gas.
Dryer Specifications:
| MODEL | CAPACITY(t/h) | SLOPE(%) | GEARBOX | MOTOR | POWER(kW) |
| Ø1.0×10m | 1-2 | 5 | ZQ400 | YCT200-4B | 7.5 |
| Ø1.2×12m | 2-3 | 5 | ZQ500 | YCT225-4A | 11 |
| Ø1.5×15m | 3-5 | 5 | ZQ500 | YCT225-4B | 15 |
| Ø1.8×18m | 4-6 | 4 | ZQ750 | YCT250-4B | 22 |
| Ø2.0×20m | 7-9 | 3.5 | ZQ750 | YCT280-4A | 30 |
| Ø2.2×22m | 8-10 | 3.5 | ZQ850 | YCT315-4A | 37 |
| Ø2.4×24m | 12-15 | 3.5 | ZQ850 | YCT315-4B | 45 |
| Ø2.8×28m | 16-22 | 3.5 | ZS145 | YCT355-4A | 55 |
| Ø3.0×30m | 20-25 | 3.5 | ZS165 | YCT355-4B | 75 |
| Ø3.2×32m | 28-32 | 3.5 | ZL130 | YCT355-4C | 90 |
| Ø3.6×36m | 38-40 | 3.5 | ZL130 | YVF2-315L2-6 | 132 |
Dryer Structure:
Sludge dryer is mainly compose of driving device, supporting roller, thrust roller, cylinder, kiln inlet, kiln outlet and sealing device.
1. 2-3 supporting points can guarantee the contacting surface between supporting roller and tyre is paralleled with axis line of cylinder during installation.
2. Supporting device is antifriction bearing (occasionally uses slide bearing). This design has simplified the supporting device of supporting roller, and reduced the useless power loss during operation. It has the features like easy operation and maintenance.
3. Suitable shim between tire and shell will ensure the tire ring on the shell tightly to increase the shell strength.
4. The main driving system uses new type AC variable frequency technology. Compared with electromagnetic speed control and DC speed control, that can save energy, have large range & high precision of speed regulation, high efficiency and running smoothly.
5. Radial direction contacting type sealing device is adopted at kiln inlet and outlet. They are perfect suitable for dimension tolerance of cylinder and skewing movement of cylinder. This sealing device’s feature is good performance, longer working life and easy for replacement.
