Application advantages of micro heat adsorption dryer

Application advantages of micro heat adsorption dryer

With the advancement of science and technology and the improvement of people's living standards, in the fields of industry, food and medicine, the requirements for compressed air quality are getting higher and higher, and all walks of life have corresponding requirements for compressed air quality. According to GB/T13277-91 "Compressed Air Quality Grade for General Purposes", there are 6 grades of water content in compressed air. Although the dew point of compressed air is not very strict in some occasions, when the gas pipeline needs to pass through the environment below 0 ℃ and the external insulation material is no longer available, in order to prevent the residual moisture in the compressed air from freezing in the pipeline, it is necessary Keep its pressure dew point below the lowest temperature reached by the environment.

　　 The currently commonly used compressed air purification equipment mainly includes refrigeration dryers, non-thermal adsorption dryers and micro-thermal adsorption dryers.

　　 1. The working principle of common dryers

　　The refrigeration dryer adopts the working principle of cooling and condensation, which is mainly composed of three parts: heat exchange system, refrigeration system and electrical control system. The non-thermal adsorption dryer is based on the principle of pressure swing adsorption and regeneration cycle, using self-heating for adsorption drying. The micro-thermal adsorption dryer adds a heater to the non-thermal adsorption dryer, and the airflow used for regeneration increases the temperature to heat and regenerate the desiccant.

　　 2. Energy consumption analysis

The energy consumption of refrigerated dryers is the largest, not only part of the electricity consumption, but also part of the consumption of circulating cooling water, so the operating energy consumption of external energy facilities is also a large expenditure; the heatless adsorption dryer The power consumption is very small, but the regeneration gas consumption is large, which leads to a large increase in the energy consumption of the air compressor; the power consumption of the micro-heat adsorption dryer is mainly the micro-heating of the regeneration gas. Because the micro-heating cycle is relatively long, this is greatly Reduce the energy consumption of the micro-thermal adsorption dryer, and because the regeneration air consumption of the micro-thermal adsorption dryer is small, the corresponding price is lower than the energy consumption of the air compressor; in terms of comprehensive energy consumption, the micro-thermal adsorption dryer There are great advantages in the field of compressed air purification.

　　 3. Design investment analysis

　　 Air compressor station equipment layout: there is not much difference in equipment size and basic layout of refrigerated dryer, non-thermal adsorption dryer and micro-thermal adsorption dryer.

In terms of piping system design: the adsorption dryer does not require cooling water pipes and valve accessories, which simplifies the piping layout of the air purification system, reduces the investment and maintenance of pipes and accessories, and reduces the cost of external energy facilities and official websites. Investment and operating costs.

　　 Micro heat adsorption dryer has the following two advantages

　　 1. The low energy consumption of the micro-thermal adsorption dryer saves the production and operation costs for the enterprise;

　　2. The micro heat adsorption dryer has a compact structure, simple operation, safe and reliable, which reduces the layout of pipelines and valves in the air compressor station, and makes the air purification system simple and smooth; at the same time, it reduces the investment and construction of external energy facilities and official websites.