10
2021
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02
Waste heat recovery dryer: Working principle of waste heat recovery dryer
Because the heat recovery dryer has a long micro-heating cycle, it greatly reduces the energy consumption of the micro-heat adsorption dryer. The micro-heat adsorption dryer consumes less regeneration gas, and the air compressor consumes less energy. From the perspective of comprehensive energy consumption, the micro-heat adsorption dryer has great advantages in the field of compressed air purification.
Working principle of waste heat regenerative dryer:
The waste heat regenerative dryer combines the advantages of high-temperature desorption in heat-adsorption dryers and the large adsorption capacity at normal temperature in non-heat adsorption dryers. It avoids the disadvantages of short switching time and high regeneration gas consumption in non-heat adsorption dryers, and overcomes the drawbacks of high energy consumption in heat-adsorption dryers. The waste heat regenerative dryer utilizes the high exhaust temperature of the air compressor to regenerate and dehydrate the adsorbent. It uses the principle of variable temperature and pressure adsorption to dry compressed air. It is suitable for use after air compressors with exhaust temperatures ≥110°C.
The freeze dryer uses a cooling and condensation working principle and mainly consists of three parts: a heat exchange system, a refrigeration system, and an electrical control system. The non-heat adsorption dryer is based on the principle of pressure swing adsorption and regeneration cycle, using self-heating for adsorption drying. The micro-heat adsorption dryer is based on the non-heat adsorption dryer, adding a heater to heat and regenerate the desiccant after the temperature of the regeneration airflow increases.
Freeze dryers have high energy consumption, with some energy consumption from electricity and some from circulating cooling water. Therefore, the operating energy consumption of external energy facilities is also a significant cost; non-heat adsorption dryers have very low energy consumption, but the regeneration gas consumption is very high, leading to a significant increase in air compressor energy consumption. The energy consumption of micro-heat adsorption dryers mainly comes from the slight heating of the regeneration gas.
Because the waste heat regenerative dryer has a long micro-heating cycle, it greatly reduces the energy consumption of the micro-heat adsorption dryer. The micro-heat adsorption dryer has low regeneration gas consumption and low air compressor energy consumption. From the perspective of comprehensive energy consumption, the micro-heat adsorption dryer has great advantages in the field of compressed air purification.
Adsorption dryer, modular dryer, zero-air-consumption dryer
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