XH Series Heatless Adsorption Dryer

XH Series heatless adsorption dryer

Expanded knowledge about Heated / heatless adsorption dryer

The difference between heatless adsorption dryer and micro thermal adsorption dryer and comparison of advantages and disadvantages:
The heated adsorption dryer is to change the operating conditions to make the adsorption under pressure, the regeneration is carried out under normal pressure or under vacuum, the working cycle is only 5-10min, the device is small in size, simple to manufacture, and the regeneration gas consumption is large; The double-tower athermal adsorption dryer has a large volume and all the required desorption energy comes from the product gas, so the regeneration gas consumption is large, the general gas consumption is 15%. The modular athermal adsorption dryer adopts a modular structure , Small size and light weight, the regeneration gas consumption is relatively small, the general gas consumption is about 5%.

The heatless adsorption dryer is based on the principle of pressure swing adsorption and regeneration cycle, using self-heating (no external heat source) for adsorption drying. The compressed air flows through the two adsorption towers alternately. When one of the adsorption towers is at a high partial pressure (working pressure), the desiccant absorbs a large amount of water, while the other adsorption tower is fed into the dry low pressure through the regeneration gas pipeline Gas, analyze the moisture absorbed by the desiccant.
Advantages: simple structure and convenient maintenance;
Disadvantages: large gas consumption, high energy grade, small effective gas supply, and sometimes the dew point is not stable enough.

Companies can choose a dryer suitable for the company's production based on comprehensive considerations such as gas requirements, energy consumption, regeneration methods, and prices.
1. Choose according to the gas requirements of the enterprise:
The quality of compressed air is generally expressed by pressure dew point. Generally speaking, the lower the pressure dew point, the higher its quality. But not every company needs high-quality compressed air. Some companies only need compressed air with a dew point of -20°C for soot blowing, and some companies need compressed air with a dew point of -70°C to control pneumatic components and smart switches.

2. Choose according to the regeneration method:
Product gas dew point and regeneration energy consumption are two major factors that must be considered when choosing an adsorption dryer. Generally speaking, the two cannot be taken into account, that is, to obtain compressed air with low dew point, more energy consumption must be paid.