Dryer 1

Regenerative air dryer types:

• An adsorption air dryer is a type of compressed air dryer that uses a desiccant to remove moisture from the compressed air. Adsorption air dryers are widely used in industrial applications where dry air is required, such as food and beverage, pharmaceutical and chemical industries. There are many different types of adsorption air dryers, each with their own advantages and disadvantages.

Heat-free adsorption air dryer:

Heatless adsorption air dryers do not use external heat to regenerate the desiccant. Instead, it relies on a process known as pressure swing adsorption (PSA) to remove moisture from compressed air. In heatless adsorption air dryers, the compressed air first passes through a prefilter to remove large particles and contaminants. The air then flows through a bed of desiccant where the moisture is absorbed. The dry air is exhausted from the dryer and used for the application. While the dry air is being used, another part of the dryer is regenerated by recirculating some of the dry compressed air through the desiccant bed. The moist air is then released to the atmosphere. Refrigerant desiccant air dryers are easy to use and maintain, but are not as energy efficient as other types of desiccant air dryers.

Heated adsorption air dryer:

Heated adsorption air dryers use external heat to regenerate the desiccant. This heat can come from a variety of sources, including electricity, natural gas, and steam. In heated adsorption air dryers, the compressed air first passes through a prefilter to remove large particles and contaminants. The air then flows through a bed of desiccant where the moisture is absorbed. The dry air is exhausted from the dryer and used for the application. While the drying air is being used, another part of the dryer is regenerated by passing a stream of heated air through the desiccant bed. The heated air removes the moisture from the desiccant, which is then released into the atmosphere. Heated adsorption air dryers are more energy efficient than non-heated adsorption air dryers, but require more maintenance and have higher operating costs.

Blower purge adsorption air dryer:

A forced scavenging adsorption air dryer uses a fan to remove the moist air from the desiccant bed. In forced air purge desiccant air dryers, compressed air first passes through a prefilter to remove large particles and contaminants. The air then flows through a bed of desiccant where the moisture is absorbed. The dry air is exhausted from the dryer and used for the application. While dry air is in use, a fan directs a stream of dry air through the desiccant bed, purging moisture-laden air. The moist air is then released to the atmosphere. Forced scavenging adsorption air dryers are more energy efficient than heatless adsorption air dryers, but not as energy efficient as heated adsorption air dryers.

Compression heat adsorption air dryer:

Compression heat adsorption air dryers use the heat generated in the compression process to regenerate the desiccant. In compression heat adsorption air dryers, the compressed air is first pre-filtered to remove large particles and contaminants. The air then flows through a bed of desiccant where the moisture is absorbed. The dry air is exhausted from the dryer and used for your application. Extract some of the compressed air while using dry air.

Lingyu Machinery - regenerative desiccant compressed air dryer