ADW - heatless PSA dryer

PSA dryers don’t require the heat source for operation. Specific adsorbent (zeolite) is used to adsorb moisture under pressure. When media becomes saturated with water, system is regenerated by increasing the pressure to a normal level and blowing it with dry air (10-15% of the output rate is needed). This removes moisture from the adsorbent allowing it to switch back to main operation regime. Two adsorption towers are run in parallel. This way recycled air from one tower can be redirected to another tower for recycling.

ADW - heatless PSA dryer       ADW - heatless PSA dryer structure

  • Features

Optimal design of contact vessels. Sufficient desiccant bed capacity and contact time to achieve target humidity and flowrate;

30% more media to ensure reliable operation and account for aging factor;

Unique diffuser design to provide uniform and steady flow, and avoid short circuiting;

Vessels are designed to accumulate thermal energy, produced during the adsorption phase, and release this energy to enhance the regeneration efficiency;

The countercurrent regeneration is used to improve process efficiency;

Optimal adsorption/regeneration time distribution to decrease the downtime;

Using prefilters and post-filters protects the adsorbent by removing excess of oil and mechanical particles, and also protects the subsequent equipment;

Automatic pressure and flowrate control system prevents rapid changes in pressure, temperature, and other process parameters.

  • Specification

ADW - heatless PSA dryer specification

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