HANGZHOU NUZHUO TECHNOLOGY GROUP CO.,LTD.

In the field of compressed air purification, when the dew point temperature required by the user is lower than 0℃, traditional refrigeration-type dryers are no longer able to meet the process requirements and must introduce adsorption-type dryers. However, although the traditional non-heated adsorption dryers on the market have simple structures, the regeneration process requires a significant amount of product gas, typically 15%-30%, and the valve switching is frequent, which not only leads to high energy consumption but also easily causes the adsorbent to powder and shorten its lifespan.

In response to this industry challenge, NUZHUO has developed an adsorption dryer that employs advanced pressure swing adsorption (PSA) and variable temperature adsorption combined technologies. The equipment utilizes the characteristic that the adsorbent adsorbs at high pressure and low temperature and desorbs at low pressure and high temperature. Through a sophisticated design featuring the alternate operation of two towers, it achieves deep drying of compressed air. By optimizing the stainless steel air distributor within the tower and the layered filling of adsorbents (such as filling small particle-sized alumina in the inner layer and large particle-sized alumina in the outer layer), it effectively addresses the “channeling effect” (where uneven airflow leads to reduced adsorption efficiency) present in traditional equipment, ensuring uniform airflow distribution and significantly enhancing drying efficiency and product gas quality.

In terms of energy consumption performance, the NUZHUO adsorption dryer has achieved a significant technological breakthrough. To address the drawback of high gas consumption in the non-heated regeneration model, NUZHUO offers micro-heated regeneration and compressed heat recovery models. By introducing external low-grade thermal energy or recovering the waste heat from the final stage of the air compressor’s high-temperature compression process for the regeneration of the adsorbent, the loss of product gas is significantly reduced. The relevant technical patents show that the closed-loop system for regeneration using compressed heat can reduce the working load of the cooler and heater, and can save up to 15%-30% of electricity costs.

Taking the representative modular dryer of NUZHUO as an example, this equipment combines the refrigeration dryer and the adsorption dryer in an organic way. It not only can stabilize the pressure dew point to below -60℃, but also has the self-regeneration function of the drying gas source. The entire machine is factory-assembly in a skid-mounted form, without the need for complex foundation installation, which greatly saves the initial investment and site costs of users.

In addition to the core energy-saving drying technology, NUZHUO has also implanted a “smart brain” into the equipment. The equipment is equipped with a self-developed remote monitoring system that can monitor real-time online data such as tower pressure, temperature, liquid level, and gas purity. It automatically generates warnings and maintenance work orders through the cloud, achieving a leap from “manufacturing” to “intelligent service”.

With its outstanding technical strength and excellent cost-effectiveness, NUZHUO’s adsorption drying system has deeply integrated into the global supply chain. Currently, NUZHUO not only serves the domestic high-end manufacturing sector, but its product line (including cryogenic air separation, PSA nitrogen and oxygen production, and air treatment equipment) is also exported to more than 15 countries and regions such as Russia, the Middle East, and Africa. In the Russian market, NUZHUO has completed several large air separation projects and over 20 sets of PSA and drying system integration solutions, fully demonstrating the reliability of the equipment in high-altitude and complex working conditions.

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Elena Liu Tel./Whatsapp/Wechat:+86-15531448603

Email :elena@hznuzhuo.com