Food, Coffee and Vegetable Fresh-keeping Nitrogen Making Machine
Jun 04, 2021
Nitrogen is widely used in food packaging, vegetable preservation, grain storage, metal heat treatment, petrochemical industry, aerospace technology, glass industry and many other fields. SOONFER has developed a new generation of PSA nitrogen generator, nitrogen can be produced quickly. The machine has a small footprint, energy saving and high efficiency, and the nitrogen output can reach 2-6Nm³/h. In the video, the nitrogen generator is supplying nitrogen to the hanging ear coffee packaging machine. By using nitrogen, the hanging ear coffee has a better fresh-keeping effect.
The nitrogen generator is based on the principle of pressure swing adsorption, using high-quality carbon molecular sieve as the adsorbent, and producing nitrogen from the air under a certain pressure. The purified and dried compressed air is subjected to pressure adsorption and decompression desorption in the adsorber. Due to the aerodynamic effect, the diffusion rate of oxygen in the micropores of the carbon molecular sieve is much greater than that of nitrogen. Oxygen is preferentially adsorbed by the carbon molecular sieve, and nitrogen is enriched in the gas phase to form the finished nitrogen. Then, after decompression to normal pressure, the adsorbent desorbs the adsorbed oxygen and other impurities to realize regeneration. Generally, two adsorption towers are installed in the system. One tower absorbs nitrogen and the other tower desorption and regeneration. The PLC program controller controls the opening and closing of the pneumatic valve, so that the two towers are alternately circulated to achieve the purpose of continuous production of high-quality nitrogen. . The entire system consists of the following components: compressed air purification components, air storage tanks, oxygen and nitrogen separation devices, and nitrogen buffer tanks.