Blower Purge Desiccant Air Dryer - SGD Series
The blower purge desiccant air dryer is an energy-efficient compressed air drying system that removes moisture by blowing and heating ambient air, while minimizing operational costs by utilizing ambient air for regeneration. Unlike conventional dryers that consume a significant portion of the dried compressed air for regeneration, this design employs a blower-driven regeneration process, effectively reducing compressed air losses and optimizing overall energy efficiency.
The operating principle is based on pressure swing adsorption, similar to traditional desiccant dryers, but with a distinct blower purge regeneration process. This process involves a sequence of stages: adsorption, regeneration, cooling, and equalization. During regeneration, ambient air is compressed by a blower, then heated to the required regeneration temperature before being directed through the adsorbent bed. The heated air desorbs the accumulated moisture from the desiccant, which is then carried out of the system along with the exhaust air.
After the heating phase, the system undergoes a cooling stage to bring the bed temperature down to a stable level suitable for the next adsorption cycle. This cooling air can be sourced from the dry air stream, depressurized for use as a cooling medium, or through air circulation with separation for optimal efficiency. This critical step ensures that residual heat does not cause dew point instability at the outlet during the next cycle.
To ensure reliable operation and long service life, the blower purge desiccant air dryer is equipped with custom-designed high-temperature butterfly valves that provide precise airflow control and superior durability under frequent cycling conditions. Additionally, the system incorporates a unique distribution diffuser that prevents channeling effects, ensuring uniform airflow distribution across the desiccant bed. This design maximizes adsorbent utilization and extends the effective service life of the system.
By combining energy-efficient blower regeneration, effective component design, and advanced airflow management, our blower purge desiccant air dryer delivers consistent, high-quality compressed air with significantly reduced operational costs, making it an ideal solution for large-scale industrial applications requiring reliable and efficient moisture control.
- Compressed air inlet temperature: 2~42℃
- Compressed air pressure: 0.7MPa, Max.1.0MPa
- Cooling water: ≤35℃, 0.2-0.3MPa industrial circulating water
- Pressure dew point: -20℃ (-40℃ customizable)
- Oil content of inlet air: 0.08ppm (0.1mg/m³)
- Solid particle size: ≤60µm
- Average regenerative air flow: 0~2% of rated air flow
- Adsorbent desiccants: activated alumina (or molecular sieve)
- Pressure drop: ≤0.021MPa (at 0.7MPa inlet pressure)
- Regeneration method: heated
- Working mode: automatic switch between the two towers (4min/8min cycle mode), continuous operation
- Control method: PLC automatic control
- Installation: indoor, allowing for installation without foundation
| Model | Max. air flow rate (m³/min) | Power supply | Blower power (kW) | Heater power (kW) | Air pipe connection | Total weight (kg) | Dimensions (L×W×H) (mm) |
| | 11.5 | 380V/50Hz | 1.8 | 7.5 | DN50 | 820 | 1500×1450×1950 |
| | 13.5 | 380V/50Hz | 2.2 | 9 | DN50 | 950 | 1500×1450×2150 |
| | 17 | 380V/50Hz | 3 | 12 | DN50 | 1150 | 1600×1450×2450 |
| | 23 | 380V/50Hz | 3.3 | 15 | DN65 | 1320 | 1750×1500×2780 |
| | 27 | 380V/50Hz | 4.2 | 18 | DN80 | 1650 | 1900×1550×2880 |
| | 34 | 380V/50Hz | 5.5 | 24 | DN80 | 1980 | 2100×1550×2100 |
| | 45 | 380V/50Hz | 7.2 | 32.4 | DN100 | 2650 | 2500×2220×2900 |
| | 55 | 380V/50Hz | 8.8 | 42 | DN100 | 3350 | 2700×2400×3100 |
| | 65 | 380V/50Hz | 10.8 | 48 | DN125 | 4080 | 2900×2500×3100 |
| | 85 | 380V/50Hz | 13.8 | 64.8 | DN150 | 5350 | 3050×2800×3100 |
| | 110 | 380V/50Hz | 17.5 | 81 | DN150 | 6200 | 3200×2900×3200 |
| | 130 | 380V/50Hz | 24 | 96 | DN150 | 7100 | 3400×3100×3300 |
| | 155 | 380V/50Hz | 30 | 130 | DN200 | 7950 | 3500×3200×3400 |
| | Technical data available on request | ||||||
