Blower-heated Zero Purge Air Dryer

Heat-regenerated twin-tower adsorption air dryer

Blower-heated Zero Purge Air Dryer

Zero-purge blower regeneration: A dedicated blower and heater use ambient air to regenerate the off-line desiccant tower, avoiding dried compressed-air purge during the specified regeneration cycle.

Twin-tower continuous supply: One tower dries compressed air while the other regenerates and cools, with automatic switching controlled by the PLC.

Thermal management: Heater protection, temperature monitoring and controlled cooling help return the regenerated tower to service under stable conditions.

Industrial valve system: High-temperature switching valves and coordinated sequencing are designed for repeated regeneration cycles.

Performance depends on operating conditions: Confirm inlet pressure, temperature, flow profile, ambient conditions and required pressure dew point before model selection.

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Product Specifications

Model Specifications

SMBZ blower-heated zero-purge dryers use a blower and electric heating for desiccant regeneration. The catalog lists 13 models from 13.5 to 200 Nm³/min, with 380V / 50Hz / 3PH power supply.

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SMBZ series catalog specifications
Model	Capacity (Nm³/min)	Listed Power (kW)	Weight (kg)	Connection	L × W × H (mm)
SMBZ135	13.5	11.6	1350	DN50	1500 × 1120 × 2440
SMBZ180	18	17.2	1800	DN65	2000 × 1500 × 2600
SMBZ220	22	21.3	2200	DN65	2100 × 1600 × 2600
SMBZ250	25	26.5	2500	DN80	2450 × 1650 × 2700
SMBZ340	34	31.5	2800	DN80	2450 × 1650 × 2700
SMBZ450	45	43.5	3500	DN100	3000 × 1900 × 2850
SMBZ600	60	52.5	4400	DN100	3200 × 2100 × 2850
SMBZ750	75	71	5100	DN100	3600 × 2500 × 3000
SMBZ850	85	82.5	6000	DN125	3900 × 3000 × 3500
SMBZ1000	100	97.5	6600	DN150	4000 × 3000 × 3500
SMBZ1250	125	114.5	8400	DN150	4000 × 3500 × 3550
SMBZ1500	150	142	10300	DN150	4000 × 3500 × 3650
SMBZ2000	200	190	12600	DN200	4600 × 3100 × 3800

Catalog Operating Conditions

Working pressure: 0.6–1.0 MPa.
Inlet temperature: 0–45°C.
Listed pressure dew point: −40°C.
Inlet oil content: ≤0.01 mg/m³.
Cooling-water temperature: ≤32°C.
Standard operating cycle: 8–16 hours.
PLC controller with an 8-inch color screen.

What Zero Purge Means

Zero purge refers to the documented regeneration configuration’s compressed-air consumption. The heater, blower and cooling system still require energy and utilities. Confirm the complete-cycle air-consumption guarantee and applicable operating conditions for the selected model.

Selection Requirements

Provide usable flow, working pressure, inlet temperature, target dew point, ambient conditions, cooling-water temperature and available electrical supply. Include the upstream oil-filtration arrangement and installation space.