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PADDLE
DRYERS & COOLERS |
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KILBURN manufactures Paddle Dryers & Coolers in technical collaboration with M/S NARA MACHINERY, COMPANY, JAPAN, the global major in this field.
The Kilburn - Nara Paddle Dryer is
a conduction type dryer that processes granular and
powdery material. It dries or cools the material by
bringing them into direct contact with revolving cuniform shaped hollow paddles without using gas as a heating
medium. |
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PRINCIPLE
OF OPERATION: |
Heat
transfer from heating medium to the material
is by conduction. Efficient drying of
powdery / crystalline / granular material
is achieved by bringing it in direct contact
with revolving cuniform hollow paddles
without using air gas heating medium.
The trough is uniformly
heated by passing heating medium through
the jacket. This ensures that the entire
material in the dryer is in full contact
with the total heat transfer area during
its passage through the dryer. |
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Salient
Features |
Operational
Advantages |
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Conduction
mode of heat transfer results in very high thermal
efficiency |
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Reduced
civil and erection expenses |
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Compact equipment
- large heat transfer area packed in a small volume. |
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High thermal efficiency |
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Low air requirement
reduces loss of heat. |
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Self cleaning Paddles. |
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Reduction in size
and cost of
downstream equipments like cyclones,
bag filters, scrubbers, fans, heaters and ducts. |
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Minimal Dusting. |
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Uniform and controlled
drying. |
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Rugged Construction. |
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Suitable for all
types of granules and free flowing materials. |
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Low speed operation. |
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Can also handle sticky materials. |
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Heavy duty bearings. |
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Low product attrition. |
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Minimal maintenance. |
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Suitable for steam,
water or oil as heating medium. |
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Easy accessibility. |
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Integral dryer-cum-cooler combination. |
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OVERALL DIMENSIONS |
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W TYPE (2 SHAFTS) |
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DIMENSION (mm) |
NDP1.6W |
NDP 3W |
NDP 4W |
NDP 5W |
NDP 6W |
NDP 7W |
NDP 8W |
NDP 9W |
A |
160 |
300 |
400 |
500 |
600 |
700 |
800 |
900 |
B |
301 |
581 |
745 |
921 |
1095 |
1279 |
1459 |
1631 |
C |
1700 |
2500 |
2700 |
2900 |
3050 |
3550 |
4250 |
4800 |
D |
1950 |
2820 |
3050 |
3325 |
3500 |
4100 |
4810 |
5500 |
E |
550 |
850 |
1100 |
1300 |
1450 |
1650 |
1850 |
2150 |
F |
3050 |
3970 |
4250 |
4780 |
4950 |
5800 |
6550 |
7300 |
FLOOR SPACE
-Width |
1500 |
1700 |
1900 |
2100 |
2400 |
2600 |
2800 |
3000 |
REQUIRED
-Length |
3300 |
3600 |
4000 |
4450 |
4700 |
6800 |
8000 |
9200 |
PADDLE TRANSMISSION AREA (m2) |
1.7 |
5.9 |
9.1 |
12.7 |
16.7 |
24.4 |
33.7 |
44.5 |
JACKET TRANSMISSION AREA (m2) |
0.8 |
2.6 |
3.6 |
4.9 |
6.1 |
8.3 |
11.6 |
14.8 |
EFFECTIVE CAPACITY(m3) |
0.065 |
0.345 |
0.64 |
1.12 |
1.6 |
2.64 |
3.76 |
5.3 |
NO. OF REVOLUTIONS (RPM) |
15~21 |
15~21 |
14~18 |
13~17 |
12~ 15 |
11~13 |
10~12 |
10 |
MOTOR RATING (KW) |
0.75~1.5 |
2.2~5.5 |
5.5~7.5 |
7.5~11 |
11~18.5 |
15~22 |
30~37 |
45 |
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DIMENSION (mm) |
NDP 3 T |
NDP 4 T |
NDP 5 T |
NDP 6 T |
NDP 7 T |
NDP 8 T |
NDP 9 T |
A |
300 |
400 |
500 |
600 |
700 |
800 |
900 |
B |
1085 |
1377 |
1688 |
2013 |
2372 |
2713 |
3035 |
C |
2500 |
2700 |
2900 |
3050 |
3550 |
4250 |
4800 |
D |
2820 |
3050 |
3325 |
3500 |
4100 |
4810 |
5500 |
E |
850 |
1100 |
1300 |
1450 |
1650 |
1850 |
2150 |
F |
3950 |
4250 |
4780 |
4950 |
5800 |
6550 |
7300 |
FLOOR SPACE
-Width |
3400 |
3800 |
4200 |
4800 |
5200 |
5600 |
6000 |
REQUIRED
-Length |
3600 |
4000 |
4450 |
4700 |
6800 |
8000 |
9200 |
PADDLE TRANSMISSION AREA (m2) |
11.8 |
18.2 |
25.4 |
33.4 |
48.8 |
67.4 |
89 |
JACKET TRANSMISSION AREA (m2) |
3.9 |
5.3 |
7.3 |
9.1 |
12.5 |
17.5 |
21 |
EFFECTIVE CAPACITY(m3) |
0.634 |
1.19 |
2.06 |
2.93 |
4.9 |
6.97 |
10 |
NO. OF REVOLUTIONS (RPM) |
5~20 |
5~20 |
5~20 |
5~20 |
5~20 |
5~20 |
5~20 |
MOTOR RATING (KW) |
2.2~5.5
X 2 |
5.5~7.5
X 2 |
7.5~11
X 2 |
11~18.5
X 2 |
15~22
X 2 |
30~37
X 2 |
45
X 2 |
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TYPICAL FLOWSHEETS |
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| LEGEND |
| 1. |
Feed |
2. |
Product |
| 3. |
Heat
Medium-in |
4. |
Heat
Medium-Out |
| 5. |
Air
In |
6. |
Air
Out |
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8. |
Cooling Medium Out |
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PRODUCTS HANDLED |
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| Kilburn Nara Paddle Dryers
can be virtually used for all types of ‘powders’.
This is primarily due to the absence of heating air, which
ensures dust free operation enabling the efficient drying
of dusty powders. |
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| Depending upon the industry
or the requirements of the product, there can be variations
introduced in the paddle dryer with respect to the number
of thermal shafts, the speed of the paddles, the temperature
of the heating material (for abrasive materials) and
the nature of the wear parts. |
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