Hankison HHL Series
Heatless regenerative desiccant dryer
Hankison heatless dryers offer an air flow of 90 m³/h to 9,000 m³/h. They feature a twin-tower design filled with high-quality activated alumina. These models are available with three different, application-specific control systems designed to meet industrial requirements for economy and performance efficiently.
Flow rate
90 to 9,000 m³/h
Pressure dew point
down to −70 °C
Pressure
10 to 16 bar
Connection
¾″ to DN 150
HHL Series desiccant dryers: reliable solutions for industrial compressed air requirements
Hankison HHL Series heatless regenerative desiccant dryers are filled with high-quality activated alumina and are available with various application-specific control systems to meet industrial requirements for economy and performance. These dryers deliver constant outlet pressure dew points down to -70 °C.
Standard instrumentation includes:
- Pressure gauges on both towers and on the purge system
- A moisture indicator that warns of an elevated dew point
- A throttle valve for precise adjustment of the purge pressure
- Inlet and outlet filters included as standard
HHL Series models from HHL 91 to HHL 901 are rated up to 16 bar as standard, while models HHL 1051 to HHL 9001 offer 10 bar as standard, with a 16 bar option.
Controller options:
- Level 1 controller: simple and functional, it provides traditional heatless drying with timer-based control, ideal for applications at full or near-full load. Automatic, timed regeneration cycles of the beds ensure constant performance and are cost-effective.
- LX controller: an advanced PLC controller with a PDP sensor and an energy-saving function, offering additional efficiency and convenient monitoring.
These dryers are ideal for applications requiring high air quality with minimal energy consumption, and offer both reliability and advanced technology to meet your specific industrial needs.
Efficient and reliable desiccant dryers for industrial applications
- Wide air flow range: HHL dryers offer an air flow of 90 m³/h to 9,000 m³/h, making them suitable for a wide variety of industrial applications.
- High-quality desiccant: equipped with activated alumina in a twin-tower design, these dryers ensure efficient moisture removal and stable pressure dew points down to -70°C.
- Application-specific control systems: available with various control options, including the simple Level 1 controller for timed regeneration and the advanced LX controller with PDP sensor and energy-saving function, to meet specific industrial requirements.
- Standard instrumentation: with pressure gauges on both towers to monitor system pressure and a moisture indicator that warns of an elevated dew point, these dryers provide precise control and reliable alerts.
- Throttle valve for precise adjustment: allows fine tuning of the purge pressure, resulting in improved efficiency and performance.
- Inlet and outlet filters as standard: these components are an integral part of the dryers and protect the installation against incoming and outgoing contaminants, improving the overall quality of the compressed air.
- High pressure ratings: depending on the model, standard pressures range from 10 bar to 16 bar, making them suitable for high-pressure applications.
- Energy and cost savings: the automatic, timed regeneration cycles minimise energy consumption and reduce operating costs while ensuring constant performance.
- Versatile pressure settings: the ability to adjust pressure settings as required without major modifications increases the operational flexibility of the dryers.
Specifications
| Model | Air flow | Connection | Electrical connections | Pre-filter | After-filter |
|---|---|---|---|---|---|
| m3/h | V/Hz | ||||
| HHL 91 | 90 | 3/4” | 95-240/50 | F06-B-HF | F06-B-PF |
| HHL 141 | 140 | 3/4” | F07-B-HF | F07-B-PF | |
| HHL 271 | 270 | 1“ | F08-B-HF | F08-B-PF | |
| HHL 351 | 350 | 1 1/2” | F10-B-HF | F10-B-PF | |
| HHL 521 | 520 | 1 1/2” | F11-B-HF | F11-B-PF | |
| HHL 681 | 680 | 1 1/2” | F12-B-HF | F12-B-PF | |
| HHL 901 | 900 | 2” | F14-B-HF | F14-B-PF | |
| HHL 1051 | 1050 | 2 1/2“ | 95-240/50 | F14-B-HF | F14-B-PF |
| HHL 1351 | 1350 | 2 1/2“ | F15-B-HF | F15-B-PF | |
| HHL 1651 | 1650 | 3” | F16-B-HF | F16-B-PF | |
| HHL 1951 | 1950 | 3” | F17-B-HF | F17-B-PF | |
| HHL 2351 | 2350 | DIN 100 | HF5-60 | HF6-60 | |
| HHL 2701 | 2700 | DIN 100 | HF5-60 | HF6-60 | |
| HHL 3601 | 3600 | DIN 100 | HF5-64 | HF6-64 | |
| HHL 5201 | 5200 | DN 150 | HF5-68 | HF6-68 | |
| HHL 7101 | 7100 | DN 150 | HF5-72 | HF6-72 | |
| HHL 9001 | 9000 | DN 150 | HF5-76 | HF6-76 | |
1 Inlet flows are determined in accordance with ISO 7183 (based on 1 bar (abs), 0 % of 7 bar (g) working pressure and an inlet temperature of 35 °C (PDP -40 °C) or an inlet temperature of 30 °C PDP -70 °C C
2 Average purge flow is the total quantity of air, averaged over the cycle time, used to purge and repressurise off-stream towers. Maximum purge flow is the flow rate through the off-stream tower during the part of the cycle in which the purge/repressurisation valve is open.
Frequently asked questions
What air flows does the Hankison HHL Series cover?
An air flow of 90 m³/h for the HHL 91 up to 9,000 m³/h for the HHL 9001.
How does the HHL dryer work?
It works without heat using two towers filled with activated alumina. The beds are regenerated in automatic, timed cycles.
What pressure dew point does the HHL Series achieve?
Constant outlet pressure dew points down to −70 °C.
What operating pressure is the series designed for?
Models HHL 91 to HHL 901 are rated up to 16 bar as standard. Models HHL 1051 to HHL 9001 are rated 10 bar as standard, 16 bar as an option.
Which controllers are available?
The Level 1 controller regenerates on a timed basis and is suitable for applications at full or near-full load. The LX controller is a PLC control with PDP sensor and energy-saving function.
What is fitted as standard?
Pressure gauges on both towers and on the purge system, a moisture indicator that warns of an elevated dew point, a throttle valve for adjusting the purge pressure, and inlet and outlet filters.
What connection sizes are available?
Depending on the model, from ¾″ for the HHL 91 to DN 150 for the largest models.
Which filters belong to the individual models?
In the specification table, each model is assigned a matching pre-filter and after-filter, for example F06-B-HF and F06-B-PF for the HHL 91.
Who can help me choose the right model?
We can. We clarify the flow rate, pressure dew point and compressor output with you and select the right model. Call us or write to us.
Which dryer suits your application?
There are various pressure dew points and flow rates, which vary depending on compressor output and field of application and must be taken into account. Let us advise you to find the optimum model for your needs.