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SDG Series Zero Loss Blower Heat Desiccant Air Dryer

Zero Loss Heated Regenerative Desiccant Dryer with Blower

Zero Loss Heated Regenerative Desiccant Dryer with Blower

1.Air delivery: 65~110m ³/min 2298-3889cfm
2.Working Pressure:0.6-4MPa/6~40bar/87-580psi
3.Input Power:10.8--17.5KW

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Product Description

1. Zero loss blower desiccant air dryer is a kind of energy-saving compressed air treatment product, composed of the following components: Two adsorption towers, one electric heater, one air blower, one after-cooler, one set of switching valves and one set of controlling system.

2. When the compressed air flows through the fixed bed layers of adsorption tower, the moisture will be adsorbed by desiccant, after the desiccant get saturated, regenerate the desiccant by hot air to recover its adsorption capacity. Use the air blower sucking the ambient air to cooling the desiccant, full system without air loss.

Product features

1. Energy-efficient and highly efficient, with low operating costs

2. Simple structure and easy maintenance

3. Stable ultra-low dew point

4. Oil-free and pollution-free

5. Long-life adsorbent

6. Adaptable to high load fluctuations

Technical Parameters

SGD Series Zero Loss Blower Heat Desiccant Air Dryer
	Model	SGD-60	SGD-80	SGD-100
Capacity	m³/min	65	87	110
Heating power	kW	48	64.8	81
Blower power	kW	10.8	13.8	17.5
Air pipe connection		DN125	DN150	DN150
Weight	Kg	4120	5500	6300
Dimension	L	2920	3040	3210
	W	2510	2780	2920
	H	3080	3120	3200

Main Applications

Oil & Gas: Instrument air for explosion-proof environments
Power & Chemical: High-purity compressed air requirements
Railway & Marine: Environments with unstable power supply
Laboratories & Precision Manufacturing: Ultra-low dew point requirements

FAQ

Q1. How does a heatless adsorption dryer work?

A. Principle: It uses a dual-tower pressure swing adsorption (PSA) system: While one tower adsorbs moisture, the other tower purges and regenerates the adsorbent (molecular sieve/alumina) with a small amount of dry air (approximately 12-15%).

Cycling: The dual-tower operating state is automatically switched (adsorption tower → regeneration tower) every 4-10 minutes, ensuring continuous air supply.

Q2. Is 15% regeneration air consumption a waste? How can it be reduced?

A. Necessity: Regeneration air consumption is an inherent characteristic of physical adsorption and is used to remove moisture from the adsorption tower.

Optimization Method: Optimize the model to match actual air consumption.

Install a dew point energy-saving control system: Automatically adjust regeneration air consumption based on humidity (reducing it to 8-10%).

Q3. What causes a sudden increase in outlet dew point (e.g., -20°C to 0°C)?

A. Adsorbent failure, adsorbent pulverization, valve leakage, or incomplete regeneration.

Q4. Does a heatless adsorption dryer require a power source?

A. Only control power is required: to drive the solenoid valve and controller (power <100W), no high-power electricity is required (unlike micro-heating types).

Q5. Which industries require heatless adsorption dryers?

A. Semiconductor manufacturing, medical ventilators, lithium battery coating, and food packaging.

Q6. What precautions should be taken when restarting after a shutdown?

A. Adsorbent regeneration: If the system has been down for >48 hours, the regeneration process must be manually initiated to prevent wet adsorbent from clumping.

Gradual loading: Start with a low flow rate for 10 minutes, then gradually increase the load.