Product Introduction
Customer-oriented compressed air purification system solution provider
You need dry compressed air
Compressed air entering the air network usually contains 100% water vapor. When the air cools, this vapor condenses, which not only damages your compressed air system but also harms your final product.
Without a dryer installed, 90L of water will enter your compressed air system daily. BOLY compressed air dryers can completely remove moisture from compressed air. Dry compressed air ensures smooth operation of the compressed air system and production process. The BOLY series of refrigerated dryers and adsorption dryers provide different dew point temperatures and dry compressed air.
Working principle of refrigerated dryer
Air flow
Compressed air enters the pre-cooler (1) through the air inlet for preliminary cooling, then flows into the refrigeration system (2) evaporator for further cooling. The cooled compressed air passes through the condensate separator (3), where condensate is discharged outside by an automatic drain. The cooled compressed air then returns to the heat exchanger (1) for reheating and exits the refrigerated dryer through the air outlet.
Refrigerant flow
The refrigerant passes through the refrigeration compressor (6) as a high-temperature liquid. The high-temperature, high-pressure liquid refrigerant is cooled and reduced in temperature by the (air-cooled or water-cooled) condenser, becoming a medium-temperature refrigerant. It is filtered for impurities by the dryer filter (9). The refrigerant then passes through the expansion valve or capillary tube (10), becoming a low-temperature, low-pressure gas-liquid mixture. Finally, it enters the evaporator (2) to exchange heat with the hot compressed air, completing the refrigeration process and returning to the refrigeration compressor (6) for circulation.
Features of refrigerated dryer products
1) Complete refrigeration system configuration. Key components of the machine use imported brand products, ensuring both processing effectiveness and reliable system operation and lifespan;
2) Refrigeration and air systems are accurately calculated by experts, with design parameters retaining more than 20% margin;
3) Thorough gas-liquid separation. Uses a cyclone plus stainless steel mesh gas-liquid separator, achieving thorough separation to avoid secondary evaporation of moisture, ensuring the drying effect of the refrigerated dryer. It has higher separation efficiency than general cyclone separators, reaching 99.99%;
4) The pipeline system uses T2 copper tubes, with selectable working pressure from 0.3 to 4.5 MPa;
5) The air heat exchanger uses fully corrugated copper tubes inside and out, increasing cooling efficiency, with a counterflow structure for good reheating and no condensation.
6) The evaporator uses hydrophilic treated thin-walled copper tubes with pure aluminum fins, featuring a turbulence structure for high heat exchange efficiency;
7) Excellent drainage system. The refrigerated dryer structure uses three-stage or more drainage to promptly and effectively discharge large amounts of condensate and oil, ensuring system and air cleanliness and dryness while reducing system load;
8) External rotor cooling fan with large air volume, low noise, frequent start-stop, and long life;
9) Air-cooled condenser is a direct expansion aluminum finned tube type with high heat exchange efficiency;
10) Armstrong foam flame-retardant insulation material minimizes cooling loss;
11) Compressor protection level is IP54 (dust and splash proof).
12) The power control part of the refrigerated dryer has comprehensive protection measures. In addition to the compressor's own over-temperature protection module, conventional motor overload protection and refrigerant high and low pressure protection switches are added, with the following protection functions: motor overload, over-temperature, phase loss protection, and refrigerant overpressure and underpressure protection.
Technical advantages
The outlet compressed air of other traditional and foreign brand refrigerated dryers is cool, while the BL series refrigerated dryer’s outlet air temperature is the same as the inlet air temperature.
The working principle of other refrigerated dryers is: two-stage heat exchange, first air-to-air heat exchange, then the exchanged compressed air exchanges heat with the refrigerant before reaching the outlet, so the outlet feels cool to the touch. Our refrigerated dryer’s working principle is: first air-to-air heat exchange, then the exchanged compressed air exchanges heat with the refrigerant, and then exchanges heat again with the refrigerant from the condenser, cooling the refrigerant before reaching the outlet. This makes the outlet temperature feel similar to the inlet temperature. The purpose is: in a sealed pipeline, once moisture is removed, temperature rise does not increase moisture because it is sealed and moisture cannot increase. Therefore, the low-temperature compressed air after moisture removal cools the refrigerant a second time, reducing the load on the condenser and fan, achieving energy saving, power saving, and strong environmental adaptability.
Technical parameters of refrigerated dryer (air-cooled type)
|
Model |
Air treatment m³/min |
Compressor power HP |
Power supply V/50Hz |
Air pipeline diameter |
Dimensions Length x Width x Height mm |
Weight Kg |
|
BL0005 |
0.8 |
0.75 |
220 |
DN20 (G3/4") |
400X800X640 |
50 |
|
BL0010 |
1.8 |
0.75 |
220 |
DN20 (G3/4") |
400X800X640 |
55 |
|
BL0020 |
2.8 |
1 |
220 |
DN25 (G1") |
400X800X780 |
65 |
|
BL0030 |
3.8 |
1 |
220 |
DN25 (G1") |
400X800X780 |
68 |
|
BL0040 |
5.5 |
1.5 |
220 |
DN40 (G1¹⁄2") |
500X860X880 |
90 |
|
BL0060 |
6.8 |
1.5 |
220 |
DN40 (G1¹⁄2") |
500X860X880 |
95 |
|
BL0080 |
8.8 |
2 |
220 |
DN50 (G2") |
700X900X1000 |
130 |
|
BL0100 |
11.5 |
2.75 |
220 |
DN50 (G2") |
700X900X1000 |
135 |
|
BL0120 |
14 |
3 |
380 |
DN65 (G2½") |
700X1000X1000 |
160 |
|
BL0150 |
16 |
4 |
380 |
DN65 (G2½") |
800X1000X1000 |
165 |
|
BL0200 |
22.8 |
5 |
380 |
DN80 (F3) |
700X1450X1200 |
250 |
|
BL0250 |
28.5 |
6 |
380 |
DN80 (F3) |
800X1450X1200 |
300 |
|
BL0300 |
35 |
8 |
380 |
DN80 (F3) |
1800X1000X1460 |
400 |
|
BL0400 |
45 |
10 |
380 |
DN100 (F4) |
2000X1000X1480 |
500 |
|
BL0500 |
55 |
12.5 |
380 |
DN125 (F5) |
2200X1100X1580 |
600 |
|
BL0600 |
65 |
15 |
380 |
DN125 (F5) |
2200X1100X1580 |
700 |
|
BL0800 |
85 |
20 |
380 |
DN150 (F6) |
2300X1300X1720 |
900 |
|
BL1000 |
105 |
25 |
380 |
DN200 (F8) |
2500X1400X2100 |
1100 |
|
BL1200 |
120 |
30 |
380 |
DN200 (F8) |
2600X1800X2100 |
1500 |
|
BL1600 |
160 |
40 |
380 |
DN200 (F8) |
3300X2000X2100 |
1650 |
Technical Parameters of Refrigerated Dryer (Water-Cooled Type)
|
Model |
Air treatment m³/min |
Compressor power HP |
Power supply V/50Hz |
Cooling Water Volume m³/h |
Air Pipeline Diameter |
Dimensions Length x Width x Height mm |
Weight Kg |
|
BL0120W |
14 |
3 |
380 |
2.8 |
DN65 (G2½”) |
700X1000X1000 |
160 |
|
BL0150W |
16 |
4 |
380 |
3 |
DN65 (G2½”) |
800X1000X1000 |
165 |
|
BL0200W |
22.8 |
5 |
380 |
3.5 |
DN80 (G3”) |
700X1450X1200 |
250 |
|
BL0250W |
28.5 |
6 |
380 |
4 |
DN80 (F3) |
800X1450X1200 |
300 |
|
BL0300W |
35 |
8 |
380 |
5 |
DN80 (F3) |
1800X1000X1450 |
400 |
|
BL0400W |
45 |
10 |
380 |
7 |
DN100 (F4) |
2000X1000X1480 |
500 |
|
BL0500W |
55 |
12.5 |
380 |
9 |
DN125 (F5) |
2200X1100X1580 |
600 |
|
BL0600W |
65 |
15 |
380 |
10 |
DN125 (F5) |
2200X1100X1580 |
700 |
|
BL0800W |
85 |
20 |
380 |
12 |
DN150 (F6) |
2300X1300X1720 |
900 |
|
BL1000W |
105 |
25 |
380 |
14 |
DN200 (F8) |
2500X1400X2100 |
1100 |
|
BL1200W |
120 |
30 |
380 |
16 |
DN200 (F8) |
2600X1800X2100 |
1500 |
|
BL1600W |
160 |
40 |
380 |
18 |
DN200 (F8) |
3300X2000X2100 |
1650 |
|
BL2000W |
200 |
50 |
380 |
24 |
DN250 (F10) |
3200X2000X2300 |
2000 |
|
BL2500W |
250 |
60 |
380 |
24 |
DN250 (F10) |
3800X2100X2400 |
2600 |
|
BL3000W |
300 |
70 |
380 |
35 |
DN300 (F12) |
4000X2100X2700 |
3500 |
|
BL3600W |
360 |
80 |
380 |
40 |
DN300 (F12) |
4200X2100X2700 |
4500 |
|
BL4000W |
400 |
100 |
380 |
50 |
DN300 (F12) |
4800X2600X2700 |
5000 |
|
BL4500W |
450 |
125 |
380 |
55 |
DN400 (F15) |
5000X2600X3000 |
5500 |
|
BL5000W |
500 |
150 |
380 |
60 |
DN400 (F15) |
5000X2800X3000 |
6000 |
Standard Conditions
|
Air Inlet Temperature |
Ambient Temperature |
Operating Pressure |
Pressure Dew Point |
Refrigerant |
|
38℃ |
38℃ |
0.7MPa |
2-10℃ |
R-22 |
Operating Range
|
Operating Pressure |
Ambient Temperature |
Maximum Inlet Temperature |
|
0.6~1.3MPa |
5~45℃ |
<80℃ |
Freeze Dryer
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