If the user needs nitrogen purity greater than 99.99%, a JQC carbon purifier can be installed on the basis of the SN oxygen generator to produce 99.9995% nitrogen. This series of products uses alkaline catalysts for deoxidation, does not require the consumption of hydrogen sources, and reacts with the residual oxygen in nitrogen to produce carbon dioxide, and then uses pressure swing adsorption technology to remove carbon dioxide and water, and obtains high-purity nitrogen after filtration. The technical indicators of high-purity nitrogen can reach O₂≤3Ppm, CO2≤4PPm, and dew point≤-60℃.

Usually, all gases can permeate through polymer membranes. The process involves gas molecules first being adsorbed and dissolved on the high-pressure side surface of the membrane, then diffusing through the membrane due to the concentration gradient, and finally desorbing from the low-pressure side of the membrane. Small molecules and molecules with strong polarity (such as water vapor and carbon dioxide) pass through the membrane faster and are concentrated on the permeation side. In contrast, larger molecules and molecules with weak polarity (such as nitrogen) pass through more slowly and are retained on the retentate side, where they are enriched, thus achieving gas mixture separation. Membrane separation utilizes the differing permeation rates of various gases through polymer membranes to achieve gas separation. The driving force for separation is the partial pressure difference across the membrane. Therefore, membrane gas separation involves no phase change and requires no regeneration, offering the advantages of simple equipment and low operation and maintenance costs. A membrane separator (assembly) consists of thousands of hollow fiber separation membranes housed within a shell. Its structure, similar to that of a shell-and-tube heat exchanger, provides the largest separation membrane surface area within the smallest space. Thus, the membrane separation system offers a small footprint, light weight, and high separation efficiency.

The pressure swing adsorption oxygen generator uses purified pre-treated compressed air as the raw material gas, which enters the adsorption tower equipped with adsorbent (zeolite molecular sieve). At different pressures, nitrogen in the compressed air diffuses through the adsorbent much faster than oxygen, resulting in oxygen concentration. After decompression, the adsorbent releases the adsorbed nitrogen and other gases, achieving regeneration. Through this alternating operation of the two adsorption towers, the required oxygen is continuously produced. The oxygen generator is mainly composed of compressed air pretreatment, compressed air buffering treatment, adsorption separation treatment, product gas buffering treatment, and control components.

The box-type small nitrogen generator uses purified pre-treated compressed air as the raw material gas, which enters the adsorption tower equipped with adsorbent (carbon molecular sieve). The separation of usable nitrogen gas is achieved based on the different adsorption capacities of nitrogen and oxygen in the compressed air as they pass through the adsorbent at varying pressures. When the pressure increases, oxygen is adsorbed by the adsorbent, while nitrogen flows out of the adsorption tower and into the nitrogen storage tank. When the pressure decreases, the adsorbent releases oxygen and is regenerated. Through this alternating operation of the two adsorption towers, nitrogen and oxygen are separated, enabling continuous production of the required nitrogen gas. The nitrogen generation device is mainly composed of compressed air pretreatment, compressed air buffer treatment, adsorption separation treatment, nitrogen buffer treatment, and control components.

The box-type small nitrogen generator uses purified pre-treated compressed air as the raw gas, which enters the adsorption tower equipped with adsorbent (carbon molecular sieve). According to the different adsorption amounts of nitrogen and oxygen in the compressed air when passing through the adsorbent at different pressures, the usable nitrogen is separated. When the pressure is increased, oxygen is adsorbed in the adsorbent, and nitrogen flows out of the adsorption tower and enters the nitrogen storage tank; when the pressure is reduced, the adsorbent is deoxygenated and regenerated; in this way, the two adsorption towers alternately reciprocate to achieve nitrogen and oxygen separation, thereby continuously producing the required nitrogen for use. The nitrogen making device is mainly composed of compressed air pretreatment, compressed air buffer treatment, adsorption separation treatment, nitrogen buffer treatment, and control components.

The box-type small nitrogen generator uses purified pre-treated compressed air as the feed gas, which enters the adsorption tower equipped with adsorbent (carbon molecular sieve). According to the different adsorption capacities of nitrogen and oxygen in the compressed air when passing through the adsorbent at different pressures, the pure nitrogen is separated. When the pressure is increased, oxygen is adsorbed in the adsorbent, and nitrogen flows out of the adsorption tower and enters the nitrogen storage tank; when the pressure is reduced, the adsorbent is regenerated by releasing oxygen. In this way, the two adsorption towers operate alternately to achieve nitrogen and oxygen separation, thereby continuously producing the required nitrogen for use. The nitrogen generation system is mainly composed of compressed air pretreatment, buffer treatment, adsorption separation, nitrogen buffer, and control components.