With the advancement of science and technology and the improvement of people's living standards, the requirements for compressed air quality are becoming higher and higher in the fields of industry, food and medicine. Currently, the commonly used compressed air purification equipment mainly has a refrigerating dryer and no heat. Adsorption dryer and micro-thermal adsorption dryer.
First, the working principle of common dryer
The refrigerating dryer adopts the working principle of cooling and dew condensation, and is mainly composed of a heat exchange system, a refrigeration system and an electrical control system. The non-thermal adsorption dryer is based on the principle of pressure swing adsorption and regeneration cycle, and uses self-heating for adsorption drying. The micro-thermal adsorption dryer adds a heater to the non-thermal adsorption dryer, and uses the regenerated gas stream to raise the temperature and then heat-regenerate the desiccant.
Second, energy consumption analysis
The refrigerating dryer has the largest energy consumption, and it has a part of the electric energy consumption and a part of the circulating cooling water consumption. Therefore, the operating energy consumption of the external energy facilities is also a No small expenditure; no heat absorption dryer has low power consumption, but the regeneration gas consumption is very large, which leads to a large increase in energy consumption of the air compressor; the electric energy 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 greatly reduces the energy consumption of the micro-heat adsorption dryer, and because the regeneration gas consumption of the micro-heat adsorption dryer is small, the corresponding price is low, and the energy consumption of the air compressor is low; In terms of comprehensive energy consumption, the micro-heat adsorption dryer has great advantages in the field of compressed air purification.
Third, design investment analysis
1. Air compressor station equipment layout: The size and basic arrangement of the refrigerating dryer, the non-thermal adsorption dryer and the micro-thermal adsorption dryer are not much different.
2, piping system design: adsorption dryer does not need cooling water pipes and valve accessories, etc., simplifying the pipeline layout of the air purification system, reducing the investment and maintenance of pipelines and accessories, while reducing external energy facilities and The investment and operating costs of the official website.
Micro-thermal adsorption dryer has the following two advantages
1. The micro-heat adsorption dryer has lower energy consumption, which saves the production and operation cost for the enterprise;
2. The micro-thermal adsorption dryer is compact in structure, simple in operation, safe and reliable, reduces the arrangement of pipelines and valves in the air compressor station, makes the air purification system simple and smooth, and reduces the investment construction of external energy facilities and pipe networks.